some important man made materials - Category wise Question and Answer Practice Test with Solutions

Question : 1

Which of the statements about glass are correct?

1. Glass is a super-cooled liquid having infinite viscosity.
2. Violet coloured glass is obtained by adding MnO2 .
3. Glass is a man-made silicate.
4. Glass is a crystalline substance.

a) 1, 2 and 3

b) 2, 3 and 4

c) 1, 2 and 4

d) 1 and 3

Question : 2

Potash (Potassium carbonate) is used as a fertilizer. It is also known as

a) pearl ash

b) oil of vitriol

c) azo compound

d) Glauber’s salt

Question : 3

Which one of the following contains cobalt ?

a) Vitamin A

b) Vitamin B₁₂

c) Riboflavin

d) Vitamin B₆

Question : 4

Which one of the following is a vitamin?

a) Oxalic acid

b) Ascorbic acid

c) Benzoic acid

d) Formic acid

Question : 5

The major component used in preparation of different types of glasses is

a) calcium silicate

b) sodium borate

c) silica

d) sodium silicate