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

Image Carbon exists in the atmosphere

Image Carbon Exists in the Atmosphere

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

Image simple Electrical circuit

Image Simple Electrical Circuit

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

Image molecule of ammonia

Image Molecule of Ammonia

Question 4:

Buckminsterfullerene is an allotropic form of

  1. Phosphorus

  2. Sulphur

  3. Carbon

  4. Tin

Answer: C

Image Structure Carbon

Image Structure Carbon

Question 5:

Which of the following are correct structural isomers of butane?

Image structural isomers

Image Structural Isomers

  1. (i) and (iii)

  2. (ii) and (iv)

  3. (i) and (ii)

  4. (iii) and (iv)

Answer: C

Image the structural isomers of butane

Image the Structural Isomers of Butane

Question 6:

In the above given reaction, alkaline acts as

  1. Reducing agent

  2. Oxidizing agent

  3. Catalyst

  4. Dehydrating agent

Answer: B

Image reducing and oxidizing agent

Image Reducing and Oxidizing Agent

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