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

Question : 1 [PCS (Pre) 2007]

The chemical composition of diamond is

a) Carbon

b) Nickel

c) Nitrogen

d) Zinc

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Question : 2

Match List-I with List-II :

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

a) A – (4); B – (2); C – (1); D – (3); E – (5)

b) A – (1); B – (4); C – (2); D – (3); E – (5)

c) A – (4); B – (1); C – (2); D – (5); E – (3)

d) A – (4); B – (1); C – (2); D – (3); E – (5)

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Question : 3

Which of the following statements about pH and $H^+$ ion concentration are incorrect?

1. The addition of one drop of concentrated HCl in NH₄OH solution decreases the pH of the solution.
2. A solution of the mixture of one equivalent of each of CH₃COOH and NaOH has a pH of 7.
3. The pH of pure neutral water is not zero.
4. A cold and concentrated H₂SO₄ has a lower $H^+$ ion concentration than a dilute solution of $H_2SO_4$.

a) 1, 2 and 4

b) 1, 3 and 4

c) 1, 2 and 3

d) 2, 3 and 4

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Question : 4 [MPPCS (Pre) 2005]

Which is the most abundant element after oxygen?

a) Silicon

b) Sodium

c) Carbon

d) Chlorine

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Question : 5

Consider the following statements:
Hard water does not give lather with soap because hard water contains:

1. calcium bicarbonate
2. magnesium bicarbonate
3. chlorides of calcium and magnesium
4. sulphates of calcium and magnesium

Which of these statements are correct?

a) 1, 2 and 3

b) 3 and 4

c) 1 and 2

d) 1, 2, 3 and 4

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