set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of the following is not present in cement?

a) Alum

b) Alumina

c) Clay

d) Gypsum

Question : 2

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 : 3

Which one of the following is not contained in portland cement ?

a) Ca₂ SiO₄

b) Ca₃ SiO₅

c) Ca₃Al₂O₆

d) Ca₃ (PO₄)₂

Question : 4

Deficiency of vitamin A results in

a) sterility

b) skin diseases

c) lose in apetite

d) retarted growth

Question : 5

One of the properties of glass is its transparency. This property of glass is due to

a) irregular arrangement of silicate units in glass.

b) regular arrangement of silicate units in glass.

c) its high viscosity.

d) its high coefficient of thermal expansion.

Question : 6

Which one among the following is the main ingredient in cement?

a) Clay

b) Limestone

c) Gypsum

d) Ash