metals, non metals, minerals, ores, properties, uses - Category wise Question and Answer Practice Test with Solutions

metals, non metals, minerals, ores, properties, uses PRACTICE TEST [4 - EXERCISES]

set 1

set 2

set 3

set 4

Question : 26 [UPPCS (Pre) 2010]

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

Answer: (d)

Question : 27

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

a) ductile

b) malleable

c) electropositive nature

d) none of these

Answer: (d)

All are characteristics of metal.

Question : 28

Alumina is chief ore of which of the following metal?

a) Ca

b) Na

c) K

d) Al

Answer: (d)

Question : 29

Consider the following elements:

  1. Copper
  2. Gold
  3. Platinum
  4. Silver
Which of the above elements exist free in nature?

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

b) (i) and (ii)

c) (ii) and (iii)

d) (iii) and (iv)

Answer: (a)

Cu, Au, and Ag are known as coinage metals and occur free in nature.

Because of nobility, they are frequently found in their native state.

Question : 30

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
Select the correct answer using the code given below :

a) (i) and (ii)

b) (i) only

c) (ii) only

d) (ii) and (iii)

Answer: (a)

Both oxygen and moisture present in air cause rusting of iron.

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