set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Soft soaps are

a) potassium salt of fatty acids

b) sodium salt of fatty acids

c) sodium and potassium salt

d) potassium salt of sulphonic acids

Question : 2

Which substance is used to retard the setting action of cement?

a) CaSO₄ , 2H₂O

b) Al₂O₃

c) CaO

d) Na₂O + K₂O

Question : 3

Washing soap can be prepared by saponification with alkali of which of the following oil

a) Groundnut oil

b) Paraffin oil

c) Rose oil

d) Kerosene oil

Question : 4

When glass is heated, it

a) melts only above 1000°C

b) vapourises

c) does not melt at a fixed temperature

d) None of these

Question : 5

Which one of the following is not present in cement?

a) Alum

b) Alumina

c) Clay

d) Gypsum

Question : 6

Deficiency of vitamin E causes

a) Hemolytic anemia

b) Scurvy

c) Beriberi

d) None of these