Why do oils dry? (Please pick the most appropriate answer)
Due to pyrolysis
Due to thermolysis
Due to hydrolysis
Due to autoxidation and polymerization
Which of the following is true?
According to the Van’t Hoff rule, an increase of relative air humidity by 2-4 % leads to an increase of reaction rate by 10 times.
According to the Van’t Hoff rule, an increase of temperature by 10°C leads to an increase of reaction rate by 2-4 times.
According to the Van’t Hoff rule, an increase of relative air humidity by 10% leads to an increase of reaction rate by 2-4 times.
According to the Van’t Hoff rule, an increase of temperature by 2-4 °C leads to an increase of reaction rate by 10 times.
Which of the following material types are most resistant to ageing? (There can be one or more correct answers)
Paper
Varnishes
Ceramic materials
Dried oils
Textile
Stones
