NCERT Class X Science Class: Chapter – 4. Carbon and Its Compounds – Part-3 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 12:

Identify the unsaturated compounds from the following

  1. Propane
  2. Propene
  3. Propyne
  4. Chloropropane
  5. (i) and (ii)
  6. (ii) and (iv)
  7. (iii) and (iv)
  8. (ii) and (iii)

Answer: D

Figure Shown the Unsaturated Compounds

Question 13:

Chlorine reacts with saturated hydrocarbons at room temperature in the

  1. Absence of sunlight
  2. Presence of sunlight
  3. Presence of water
  4. Presence of hydrochloric acid

Answer: B

Chlorine Saturated Hydrocarbons in Light

Question 14:

In the soap micelles

  1. The ionic end of soap is on the surface of the cluster while the carbon chain is in the interior of the cluster.
  2. Ionic end of soap is in the interior of the cluster and the carbon chain is out of the cluster.
  3. Both ionic end and carbon chain are in the interior of the cluster
  4. Both ionic end and carbon chain are on the exterior of the cluster

Answer: A

Image the Soap Micelles

Question 15:

Pentane has the molecular formula . It has

  1. 5 covalent bonds
  2. 12 covalent bonds
  3. 16 covalent bonds
  4. 17 covalent bonds

Answer: C

Image Structural Formula of Pentane

Question 16:

Structural formula of benzene is


Image the Option (A) for Benzene


Image the Option (B) for Benzene


Figure Shown the Option (C) for Benzene


Imagethe Option (D) for Benzene

Answer: C

Image the Structure of Benzene