{"id":680,"date":"2024-04-11T01:36:33","date_gmt":"2024-04-10T22:36:33","guid":{"rendered":"https:\/\/sisu.ut.ee\/heritage-analysis\/self-test-3-1\/"},"modified":"2024-07-16T18:54:46","modified_gmt":"2024-07-16T15:54:46","slug":"self-test-3-1","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/heritage-analysis\/self-test-3-1\/","title":{"rendered":"SELF TEST 3.1"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam1\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n<div class=\"watupro-exam-description\" id=\"description-quiz-1\"><h2><span style=\"color: #000000;\">Questions about <\/span><strong><span style=\"color: #b22222;\">Infrared (IR) spectroscopy<\/span><\/strong><span style=\"color: #000000;\">.<\/span><\/h2>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-1\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"  watupro-required-1 watupro-question-id-1\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following\u00a0is true?\u00a0<span style=\"font-size:12px;\">(There can be one or more correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"1\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType1\" class=\"answerTypeCnt1\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-1\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices1\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-1[]\" id=\"answer-id-1\" class=\"answer   answerof-1 \" value=\"1\"><label for=\"answer-id-1\" id=\"answer-label-1\" class=\" answer\"><span><p>Inorganic compounds can only be analysed in the far-IR region<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-1[]\" id=\"answer-id-2\" class=\"answer   answerof-1 \" value=\"2\"><label for=\"answer-id-2\" id=\"answer-label-2\" class=\" answer\"><span><p>Mid-IR region is the most widely used IR region for most of the cultural heritage samples<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-1[]\" id=\"answer-id-3\" class=\"answer   answerof-1 \" value=\"3\"><label for=\"answer-id-3\" id=\"answer-label-3\" class=\" answer\"><span><p>Near-IR region is more used for quantitative analysis than mid-IR region<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-1[]\" id=\"answer-id-4\" class=\"answer   answerof-1 \" value=\"4\"><label for=\"answer-id-4\" id=\"answer-label-4\" class=\" answer\"><span><p>Polymers typically have characteristic absorption bands in the mid-IR region<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-1[]\" id=\"answer-id-5\" class=\"answer   answerof-1 \" value=\"5\"><label for=\"answer-id-5\" id=\"answer-label-5\" class=\" answer\"><span><p>Far-IR region is useful for analysis of organic compounds<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"  watupro-required-2 watupro-question-id-2\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following vibrations are diagnostically useful in infrared spectra?\u00a0<em>(There can be one or more correct answers)<\/em><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"2\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType2\" class=\"answerTypeCnt2\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-2\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices2\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-2[]\" id=\"answer-id-6\" class=\"answer   answerof-2 \" value=\"6\"><label for=\"answer-id-6\" id=\"answer-label-6\" class=\" answer\"><span><p>C-H stretch<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-2[]\" id=\"answer-id-7\" class=\"answer   answerof-2 \" value=\"7\"><label for=\"answer-id-7\" id=\"answer-label-7\" class=\" answer\"><span><p>C-C stretch<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-2[]\" id=\"answer-id-8\" class=\"answer   answerof-2 \" value=\"8\"><label for=\"answer-id-8\" id=\"answer-label-8\" class=\" answer\"><span><p>C=O stretch<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-2[]\" id=\"answer-id-9\" class=\"answer   answerof-2 \" value=\"9\"><label for=\"answer-id-9\" id=\"answer-label-9\" class=\" answer\"><span><p>C-O stretch<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"  watupro-required-3 watupro-question-id-3\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following is true? <span style=\"font-size:12px;\">(There can be one or more correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"3\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType3\" class=\"answerTypeCnt3\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-3\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices3\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-3[]\" id=\"answer-id-10\" class=\"answer   answerof-3 \" value=\"10\"><label for=\"answer-id-10\" id=\"answer-label-10\" class=\" answer\"><span><p>Spectrum presented in the absorbance scale can easily be converted into spectrum presented in the transmittance scale and <i>vice versa<\/i><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-3[]\" id=\"answer-id-11\" class=\"answer   answerof-3 \" value=\"11\"><label for=\"answer-id-11\" id=\"answer-label-11\" class=\" answer\"><span><p>Spectrum presented in the transmittance scale can easily be converted into spectrum presented in the absorbance scale, but <i>vice versa<\/i> is not possible<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-3[]\" id=\"answer-id-12\" class=\"answer   answerof-3 \" value=\"12\"><label for=\"answer-id-12\" id=\"answer-label-12\" class=\" answer\"><span><p>The spectra recorded in the transmittance and absorbance scales enable seeing different structural features of the same sample<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-3[]\" id=\"answer-id-13\" class=\"answer   answerof-3 \" value=\"13\"><label for=\"answer-id-13\" id=\"answer-label-13\" class=\" answer\"><span><p>Different type of equipment is needed for recording absorbance and transmittance spectra<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"  watupro-required-4 watupro-question-id-4\">\n\t\t\t<div class=\"question-content\"><div><p>In IR spectrometers signal-to-noise ratio is an issue because \u2026 <span style=\"font-size:12px;\">(There can be one or more correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"4\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType4\" class=\"answerTypeCnt4\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-4\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices4\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-4[]\" id=\"answer-id-14\" class=\"answer   answerof-4 \" value=\"14\"><label for=\"answer-id-14\" id=\"answer-label-14\" class=\" answer\"><span><p>\u2026 IR sources typically have low intensity<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-4[]\" id=\"answer-id-15\" class=\"answer   answerof-4 \" value=\"15\"><label for=\"answer-id-15\" id=\"answer-label-15\" class=\" answer\"><span><p>\u2026 IR detectors typically have low sensitivity<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-4[]\" id=\"answer-id-16\" class=\"answer   answerof-4 \" value=\"16\"><label for=\"answer-id-16\" id=\"answer-label-16\" class=\" answer\"><span><p>\u2026 oxygen from air strongly absorbs IR photons<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-4[]\" id=\"answer-id-17\" class=\"answer   answerof-4 \" value=\"17\"><label for=\"answer-id-17\" id=\"answer-label-17\" class=\" answer\"><span><p>\u2026 IR radiation cannot be efficiently reflected<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-4[]\" id=\"answer-id-18\" class=\"answer   answerof-4 \" value=\"18\"><label for=\"answer-id-18\" id=\"answer-label-18\" class=\" answer\"><span><p>\u2026 IR radiation cannot be efficiently focused<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"  watupro-required-5 watupro-question-id-5\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following compounds\/ materials do not give useful IR spectra?\u00a0<span style=\"font-size:12px;\">(There can be one or more correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"5\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType5\" class=\"answerTypeCnt5\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-5\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices5\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-5[]\" id=\"answer-id-19\" class=\"answer   answerof-5 \" value=\"19\"><label for=\"answer-id-19\" id=\"answer-label-19\" class=\" answer\"><span><p>Inorganic compounds<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-5[]\" id=\"answer-id-20\" class=\"answer   answerof-5 \" value=\"20\"><label for=\"answer-id-20\" id=\"answer-label-20\" class=\" answer\"><span><p>Homonuclear molecules (O<sub>2<\/sub>, N<sub>2<\/sub>, Cl<sub>2<\/sub>)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-5[]\" id=\"answer-id-21\" class=\"answer   answerof-5 \" value=\"21\"><label for=\"answer-id-21\" id=\"answer-label-21\" class=\" answer\"><span><p>Organic compounds<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-5[]\" id=\"answer-id-22\" class=\"answer   answerof-5 \" value=\"22\"><label for=\"answer-id-22\" id=\"answer-label-22\" class=\" answer\"><span><p>Minerals<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-5[]\" id=\"answer-id-23\" class=\"answer   answerof-5 \" value=\"23\"><label for=\"answer-id-23\" id=\"answer-label-23\" class=\" answer\"><span><p>Polymers<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-5[]\" id=\"answer-id-24\" class=\"answer   answerof-5 \" value=\"24\"><label for=\"answer-id-24\" id=\"answer-label-24\" class=\" answer\"><span><p>Carbon<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-6\" style=\";\"><div id=\"questionWrap-6\" class=\"  watupro-required-6 watupro-question-id-6\">\n\t\t\t<div class=\"question-content\"><div><p>In which IR spectral region oxides and sulphides have characteristic vibrations? <span style=\"font-size:12px;\">(There can be one or more correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_6\" value=\"6\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType6\" class=\"answerTypeCnt6\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-6\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices6\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-6[]\" id=\"answer-id-25\" class=\"answer   answerof-6 \" value=\"25\"><label for=\"answer-id-25\" id=\"answer-label-25\" class=\" answer\"><span><p>Far-infrared<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-6[]\" id=\"answer-id-26\" class=\"answer   answerof-6 \" value=\"26\"><label for=\"answer-id-26\" id=\"answer-label-26\" class=\" answer\"><span><p>Near-infrared<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-6[]\" id=\"answer-id-27\" class=\"answer   answerof-6 \" value=\"27\"><label for=\"answer-id-27\" id=\"answer-label-27\" class=\" answer\"><span><p>Mid-infrared<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-7\" style=\";\"><div id=\"questionWrap-7\" class=\"  watupro-required-7 watupro-question-id-7\">\n\t\t\t<div class=\"question-content\"><div><p>What would happen if FT-IR didn\u2019t use Fourier Transform?\u00a0<span style=\"font-size:12px;\">(There can be one or more correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_7\" value=\"7\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType7\" class=\"answerTypeCnt7\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-7\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices7\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-7[]\" id=\"answer-id-28\" class=\"answer   answerof-7 \" value=\"28\"><label for=\"answer-id-28\" id=\"answer-label-28\" class=\" answer\"><span><p>We\u2019d see an uninterpretable spectrum<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-7[]\" id=\"answer-id-29\" class=\"answer   answerof-7 \" value=\"29\"><label for=\"answer-id-29\" id=\"answer-label-29\" class=\" answer\"><span><p>We\u2019d get less accurate spectra<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-7[]\" id=\"answer-id-30\" class=\"answer   answerof-7 \" value=\"30\"><label for=\"answer-id-30\" id=\"answer-label-30\" class=\" answer\"><span><p>The spectra would have\u00a0inferior signal-to-noise ratio<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-8\" style=\";\"><div id=\"questionWrap-8\" class=\"  watupro-required-8 watupro-question-id-8\">\n\t\t\t<div class=\"question-content\"><p>There are three most commonly used ATR materials - diamond, zinc selenide and germanium. Which of the following statements applies to which crystal?<\/p><div class=\"question-choices\"><table class=\"question-choices watupro-matrix-droppable\" id=\"watuPROMatrixDroppable_8\"><tr><td class=\"watupro-matrix-left-cell\">Has the largest wavenumber range<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable8\" id=\"watuPRODroppableCell31\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-0-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell31', 0);return false;\">Zinc selenide<!--WTPMD52d9e08b212bed1e6b754c5a57bfeb6a2--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell31', 1);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell31', 2);return false;\">Germanium<!--WTPMD5b916c60f8aa83bedc66350c623fd3590--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell31', 3);return false;\">Zinc selenide or germanium<!--WTPMD506845544a794b55bc618326580a625b4--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell31', 4);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-8 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell31\" name=\"matrix-left-31\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Acidic materials can damage this crystal<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable8\" id=\"watuPRODroppableCell32\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-1-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell32', 0);return false;\">Zinc selenide<!--WTPMD52d9e08b212bed1e6b754c5a57bfeb6a2--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell32', 1);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell32', 2);return false;\">Germanium<!--WTPMD5b916c60f8aa83bedc66350c623fd3590--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell32', 3);return false;\">Zinc selenide or germanium<!--WTPMD506845544a794b55bc618326580a625b4--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell32', 4);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-8 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell32\" name=\"matrix-left-32\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Can be used to analyse samples with high refractive index<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable8\" id=\"watuPRODroppableCell33\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-2-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell33', 0);return false;\">Zinc selenide<!--WTPMD52d9e08b212bed1e6b754c5a57bfeb6a2--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell33', 1);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell33', 2);return false;\">Germanium<!--WTPMD5b916c60f8aa83bedc66350c623fd3590--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell33', 3);return false;\">Zinc selenide or germanium<!--WTPMD506845544a794b55bc618326580a625b4--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell33', 4);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-8 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell33\" name=\"matrix-left-33\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Is brittle<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable8\" id=\"watuPRODroppableCell34\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-3-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell34', 0);return false;\">Zinc selenide<!--WTPMD52d9e08b212bed1e6b754c5a57bfeb6a2--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell34', 1);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell34', 2);return false;\">Germanium<!--WTPMD5b916c60f8aa83bedc66350c623fd3590--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell34', 3);return false;\">Zinc selenide or germanium<!--WTPMD506845544a794b55bc618326580a625b4--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell34', 4);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-8 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell34\" name=\"matrix-left-34\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Is very hard<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable8\" id=\"watuPRODroppableCell35\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-4-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell35', 0);return false;\">Zinc selenide<!--WTPMD52d9e08b212bed1e6b754c5a57bfeb6a2--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell35', 1);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell35', 2);return false;\">Germanium<!--WTPMD5b916c60f8aa83bedc66350c623fd3590--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell35', 3);return false;\">Zinc selenide or germanium<!--WTPMD506845544a794b55bc618326580a625b4--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell35', 4);return false;\">Diamond<!--WTPMD58f7671185d590914ac21c7511767b699--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-8 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell35\" name=\"matrix-left-35\" value=\"\"><\/td><\/tr><\/table><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_8\" value=\"8\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType8\" class=\"answerTypeCnt8\" value=\"nmatrix\"><input type=\"hidden\" id=\"watupro-required-question-8\"><!-- end question-content--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-9\" style=\";\"><div id=\"questionWrap-9\" class=\"  watupro-required-9 watupro-question-id-9\">\n\t\t\t<div class=\"question-content\"><div><p>What is the following\u00a0formula used for in practice?<\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"406\" height=\"123\" class=\"alignnone wp-image-164\" style=\"\" src=\"https:\/\/multisite.ut.ee\/wp-content\/uploads\/sites\/285\/capture.png\" title=\"capture.png\" alt=\"Formula\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/285\/capture.png 406w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/285\/capture-300x91.png 300w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\"><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_9\" value=\"9\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType9\" class=\"answerTypeCnt9\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-9\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices9\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-9[]\" id=\"answer-id-36\" class=\"answer   answerof-9 \" value=\"36\"><label for=\"answer-id-36\" id=\"answer-label-36\" class=\" answer\"><span><p>To estimate the depth of penetration in ATR-FT-IR spectroscopy<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-9[]\" id=\"answer-id-37\" class=\"answer   answerof-9 \" value=\"37\"><label for=\"answer-id-37\" id=\"answer-label-37\" class=\" answer\"><span><p>To calculate ATR crystal's refractive index<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-9[]\" id=\"answer-id-38\" class=\"answer   answerof-9 \" value=\"38\"><label for=\"answer-id-38\" id=\"answer-label-38\" class=\" answer\"><span><p>To estimate the critical angle of internal reflection<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-10\" style=\";\"><div id=\"questionWrap-10\" class=\"  watupro-required-10 watupro-question-id-10\">\n\t\t\t<div class=\"question-content\"><div><p>Calculate the wavelength in nm, if the wavenumber is 3000 cm<sup>-1<\/sup>.<\/p><p>Please write just the nominal value without unit<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_10\" value=\"10\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType10\" class=\"answerTypeCnt10\" value=\"textarea\"><input type=\"hidden\" id=\"watupro-required-question-10\"><!-- end question-content--><\/div><div class=\"question-choices \" id=\"questionChoices10\"><p><textarea name=\"answer-10[]\" id=\"textarea_q_10\" class=\"watupro-textarea-medium\" rows=\"5\" cols=\"80\"><\/textarea>\n<\/p><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-11\" style=\";\"><div id=\"questionWrap-11\" class=\"  watupro-required-11 watupro-question-id-11\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following statements is true? <span style=\"font-size:12px;\">(There can be one or several correct answers)\u00a0<\/span><br>ATR is \u2026<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_11\" value=\"11\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType11\" class=\"answerTypeCnt11\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-11\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices11\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-11[]\" id=\"answer-id-40\" class=\"answer   answerof-11 \" value=\"40\"><label for=\"answer-id-40\" id=\"answer-label-40\" class=\" answer\"><span><p>a reflection technique<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-11[]\" id=\"answer-id-41\" class=\"answer   answerof-11 \" value=\"41\"><label for=\"answer-id-41\" id=\"answer-label-41\" class=\" answer\"><span><p>a sampling technique that requires a smooth surface<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-11[]\" id=\"answer-id-42\" class=\"answer   answerof-11 \" value=\"42\"><label for=\"answer-id-42\" id=\"answer-label-42\" class=\" answer\"><span><p>a non-contact technique<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-11[]\" id=\"answer-id-43\" class=\"answer   answerof-11 \" value=\"43\"><label for=\"answer-id-43\" id=\"answer-label-43\" class=\" answer\"><span><p>a sampling technique that can be used for the analysis of tiny samples<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-11[]\" id=\"answer-id-44\" class=\"answer   answerof-11 \" value=\"44\"><label for=\"answer-id-44\" id=\"answer-label-44\" class=\" answer\"><span><p>a technique in which quartz is used as crystal material<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-12\" style=\";\"><div id=\"questionWrap-12\" class=\"  watupro-required-12 watupro-question-id-12\">\n\t\t\t<div class=\"question-content\"><div>Choose the correct detector for each characteristic:<\/div>\n<div>\u00a0<\/div>\n<div><select name=\"gap_12_1\" class=\"watupro-gap answer answerof-12\"><option value=\"\"><\/option><option value=\"MCT\">MCT<\/option><option value=\"DTGS\/ DLaTGS\">DTGS\/ DLaTGS<\/option><\/select>\u00a0 \u00a0 \u00a0Need of liquid nitrogen<\/div>\n<div><select name=\"gap_12_2\" class=\"watupro-gap answer answerof-12\"><option value=\"\"><\/option><option value=\"MCT\">MCT<\/option><option value=\"DTGS\/ DLaTGS\">DTGS\/ DLaTGS<\/option><\/select>\u00a0 \u00a0 \u00a0Better signal to noise ratio<\/div>\n<div><select name=\"gap_12_3\" class=\"watupro-gap answer answerof-12\"><option value=\"\"><\/option><option value=\"MCT\">MCT<\/option><option value=\"DTGS\/ DLaTGS\">DTGS\/ DLaTGS<\/option><\/select>\u00a0 \u00a0 \u00a0 Analysis in the mid-IR and far-IR region<\/div>\n<div><select name=\"gap_12_4\" class=\"watupro-gap answer answerof-12\"><option value=\"\"><\/option><option value=\"DTGS\/ DLaTGS\">DTGS\/ DLaTGS<\/option><option value=\"MCT\">MCT<\/option><\/select>\u00a0 \u00a0 \u00a0 Fast measurement<\/div>\n<div><select name=\"gap_12_5\" class=\"watupro-gap answer answerof-12\"><option value=\"\"><\/option><option value=\"MCT\">MCT<\/option><option value=\"DTGS\/ DLaTGS\">DTGS\/ DLaTGS<\/option><\/select>\u00a0 \u00a0 \u00a0 Lower sensitivity<\/div>\n<div><select name=\"gap_12_6\" class=\"watupro-gap answer answerof-12\"><option value=\"\"><\/option><option value=\"MCT\">MCT<\/option><option value=\"DTGS\/ DLaTGS\">DTGS\/ DLaTGS<\/option><\/select>\u00a0 \u00a0 \u00a0 Works at room temperature<\/div>\n<p>\u00a0<\/p>\n<input type=\"hidden\" name=\"question_id[]\" id=\"qID_12\" value=\"12\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType12\" class=\"answerTypeCnt12\" value=\"gaps\"><input type=\"hidden\" id=\"watupro-required-question-12\"><!-- end question-content--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-13\" style=\";\"><div id=\"questionWrap-13\" class=\"  watupro-required-13 watupro-question-id-13\">\n\t\t\t<div class=\"question-content\"><div><p>What are the advantages of FT-IR microspectroscopy compared to the conventional FT-IR spectroscopy?\u00a0<span style=\"font-size:12px;\">(There can be one or more correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_13\" value=\"13\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType13\" class=\"answerTypeCnt13\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-13\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices13\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-46\" class=\"answer   answerof-13 \" value=\"46\"><label for=\"answer-id-46\" id=\"answer-label-46\" class=\" answer\"><span><p>Enables analysis of small parts of the large samples<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-47\" class=\"answer   answerof-13 \" value=\"47\"><label for=\"answer-id-47\" id=\"answer-label-47\" class=\" answer\"><span><p>Enables analysis in the far-IR region<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-48\" class=\"answer   answerof-13 \" value=\"48\"><label for=\"answer-id-48\" id=\"answer-label-48\" class=\" answer\"><span><p>IR mapping possibility<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-49\" class=\"answer   answerof-13 \" value=\"49\"><label for=\"answer-id-49\" id=\"answer-label-49\" class=\" answer\"><span><p>Enables determining the homogeneity of the sample<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-50\" class=\"answer   answerof-13 \" value=\"50\"><label for=\"answer-id-50\" id=\"answer-label-50\" class=\" answer\"><span><p>DRIFTS is a commonly used as sampling technique in FT-IR microspectroscopy<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-51\" class=\"answer   answerof-13 \" value=\"51\"><label for=\"answer-id-51\" id=\"answer-label-51\" class=\" answer\"><span><p>The smallest sample size can be a few mm in diameter<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-14\" style=\";\"><div id=\"questionWrap-14\" class=\"  watupro-required-14 watupro-question-id-14\">\n\t\t\t<div class=\"question-content\"><div><p>Which materials ATR-FT-IR spectrum this is? Please compare the IR spectrum with reference spectra available at <a data-url=\"https:\/\/spectra.chem.ut.ee\/\" href=\"https:\/\/spectra.chem.ut.ee\/\" target=\"_blank\" title=\"\">https:\/\/spectra.chem.ut.ee\/<\/a>.<\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"1003\" height=\"709\" class=\"alignnone wp-image-167\" style=\"\" src=\"https:\/\/multisite.ut.ee\/wp-content\/uploads\/sites\/285\/beeswax_test.png\" title=\"beeswax_test.png\" alt=\"beeswax_IR_test\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/285\/beeswax_test.png 1003w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/285\/beeswax_test-300x212.png 300w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/285\/beeswax_test-768x543.png 768w\" sizes=\"auto, (max-width: 1003px) 100vw, 1003px\"><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_14\" value=\"14\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType14\" class=\"answerTypeCnt14\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-14\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices14\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-14[]\" id=\"answer-id-52\" class=\"answer   answerof-14 \" value=\"52\"><label for=\"answer-id-52\" id=\"answer-label-52\" class=\" answer\"><span><p>Beeswax<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-14[]\" id=\"answer-id-53\" class=\"answer   answerof-14 \" value=\"53\"><label for=\"answer-id-53\" id=\"answer-label-53\" class=\" answer\"><span><p>Linseed oil<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-14[]\" id=\"answer-id-54\" class=\"answer   answerof-14 \" value=\"54\"><label for=\"answer-id-54\" id=\"answer-label-54\" class=\" answer\"><span><p>Gum Arabicum<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-14[]\" id=\"answer-id-55\" class=\"answer   answerof-14 \" value=\"55\"><label for=\"answer-id-55\" id=\"answer-label-55\" class=\" answer\"><span><p>Egg yolk<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-14[]\" id=\"answer-id-56\" class=\"answer   answerof-14 \" value=\"56\"><label for=\"answer-id-56\" id=\"answer-label-56\" class=\" answer\"><span><p>Colophony<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-14[]\" id=\"answer-id-57\" class=\"answer   answerof-14 \" value=\"57\"><label for=\"answer-id-57\" id=\"answer-label-57\" class=\" answer\"><span><p>Polyvinyl acetate<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-15\" style=\";\"><div id=\"questionWrap-15\" class=\"  watupro-required-15 watupro-question-id-15\">\n\t\t\t<div class=\"question-content\"><div><p>Which answers are correct? FT-IR enables easily distinguish between\u2026 <span style=\"font-size:12px;\">(There can be one or more\u00a0correct answers)<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_15\" value=\"15\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType15\" class=\"answerTypeCnt15\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-15\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices15\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-58\" class=\"answer   answerof-15 \" value=\"58\"><label for=\"answer-id-58\" id=\"answer-label-58\" class=\" answer\"><span><p>\u2026 different types of oils<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-59\" class=\"answer   answerof-15 \" value=\"59\"><label for=\"answer-id-59\" id=\"answer-label-59\" class=\" answer\"><span><p>\u2026 different fillers in paper<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-60\" class=\"answer   answerof-15 \" value=\"60\"><label for=\"answer-id-60\" id=\"answer-label-60\" class=\" answer\"><span><p>\u2026 different types of varnish<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-61\" class=\"answer   answerof-15 \" value=\"61\"><label for=\"answer-id-61\" id=\"answer-label-61\" class=\" answer\"><span><p>\u2026 different types of proteins (e.g. animal glue, wool, egg white)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-62\" class=\"answer   answerof-15 \" value=\"62\"><label for=\"answer-id-62\" id=\"answer-label-62\" class=\" answer\"><span><p>\u2026 oil and egg tempera binder<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-63\" class=\"answer   answerof-15 \" value=\"63\"><label for=\"answer-id-63\" id=\"answer-label-63\" class=\" answer\"><span><p>\u2026 oil and resin\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-64\" class=\"answer   answerof-15 \" value=\"64\"><label for=\"answer-id-64\" id=\"answer-label-64\" class=\" answer\"><span><p>\u2026 fresh and dried oil\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-65\" class=\"answer   answerof-15 \" value=\"65\"><label for=\"answer-id-65\" id=\"answer-label-65\" class=\" answer\"><span><p>\u2026 different types of ochres<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-66\" class=\"answer   answerof-15 \" value=\"66\"><label for=\"answer-id-66\" id=\"answer-label-66\" class=\" answer\"><span><p>\u2026 chalk and quartz<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-67\" class=\"answer   answerof-15 \" value=\"67\"><label for=\"answer-id-67\" id=\"answer-label-67\" class=\" answer\"><span><p>\u2026 cotton and linen textile fibres<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style=\"display:none\" id=\"question-16\">\n\t<div class=\"question-content\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t<\/div>\n<\/div>\n\n<br>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons1\">\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; 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