inorganic chemistry - Category wise Question and Answer Practice Test with Solutions

Question : 11

Match List-I with List-II :

Select the correct answer from the codes given below: (A) (B) (C) (D)

a) 4 1 2 3

b) 3 2 1 4

c) 2 3 1 4

d) 3 1 2 4

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Question : 12 [RAS/RTS (Pre) 2003]

Approximately, how many different chemical elements exist in the Earth?

a) 300

b) 200

c) 250

d) 100

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Question : 13 [IAS (Pre) 2003]

Assertion (A):
In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group.
Reason (R):
In a group, the atomic radii generally increase from top to bottom.

a) Both (A) and (R) are true and (R) is the correct explanation of (A)

b) (A) is true, but (R) is false

c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

d) (A) is false, but (R) is true

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Question : 14 [UPPCS (Pre) 1995]

Which of the following is a fundamental element?

a) Sand

b) Marble

c) Diamond

d) Sugar

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Question : 15

Consider the following statements :

1. Solid NaCl conducts electricity.
2. Bauxite is purified by chemical separation.
3. Copper is purified by electrolytic refining.

Which of these statements are correct ?

a) 2 and 3

b) 1 and 3

c) 1 and 2

d) 1, 2 and 3

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