NCERT Class X Science Class: Chapter –4. Carbon and its Compounds – Part-1

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Multiple Choice Questions

Question 1:

Carbon exists in the atmosphere in the form of

1. Carbon monoxide only

2. Carbon monoxide in traces and carbon dioxide

3. Carbon dioxide only

4. Coal

Answer: C

Question 2:

Which of the following statements are usually correct for carbon compounds? These

1. Are good conductors of electricity

2. Are poor conductors of electricity

3. Have strong forces of attraction between their molecules

4. Do not have strong forces of attraction between their molecules

5. (i) and (iii)

6. (ii) and (iii)

7. (i) and (iv)

8. (ii) and (iv)

Answer: D

Question 3:

A molecule of ammonia () has

1. Only single bonds

2. Only double bonds

3. Only triple bonds

4. Two double bonds and one single bond

Answer: A

Question 4:

Buckminsterfullerene is an allotropic form of

1. Phosphorus

2. Sulphur

3. Carbon

4. Tin

Answer: C

Question 5:

Which of the following are correct structural isomers of butane?

1. (i) and (iii)

2. (ii) and (iv)

3. (i) and (ii)

4. (iii) and (iv)

Answer: C

Question 6:

In the above given reaction, alkaline acts as

1. Reducing agent

2. Oxidizing agent

3. Catalyst

4. Dehydrating agent

Answer: B