set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the following elements:

1. Copper
2. Gold
3. Platinum
4. Silver

a) (i), (ii) and (iv)

b) (i) and (ii)

c) (ii) and (iii)

d) (iii) and (iv)

Question : 2

When iron is left exposed to open air, it gets rusted. Which constituent(s) of air is /are responsible for rusting iron?

1. Oxygen gas present in the air
2. Moisture present in the air
3. Carbon dioxide gas present in the air

a) (i) and (ii)

b) (i) only

c) (ii) only

d) (ii) and (iii)

Question : 3

Which of the following is the electron configuration of a metallic element?

a) 2, 8, 7

b) 2, 8, 8

c) 2, 8

d) 2, 8, 8, 2

Question : 4

Which of the following is not a atomic characteristics of metal –

a) ductile

b) malleable

c) electropositive nature

d) none of these

Question : 5

In which of the following industries is mica used as a raw material?

a) Toys

b) Glass and pottery

c) Iron and steel

d) Electrical

Question : 6

Which one of the following is also called Stranger Gas?

a) Neon

b) Xenon

c) Argon

d) Nitrous oxide