Question 71 markMCQSection A

Consider the structures of the three cyclic carbon compounds A, B and C given below and select the correct option from the following:

Figure for question 7
Carbon and its Compounds
Cyclic Carbon Compounds

Options

(a)A and C are isomers of hexane and B is benzene.
(b)A is an isomer of hexane, B is benzene and C is an isomer of hexene.
(c)A is a saturated cyclic hydrocarbon and B and C are unsaturated cyclic hydrocarbons.
(d)A is cyclohexane and B and C are the isomers of benzene.

Official answer

A and C are isomers of hexane and B is benzene.

Answer keywords:isomershexanebenzenesaturatedunsaturated

Marking scheme

  1. 1.A and C are isomers of hexane and B is benzene.
  2. 2.A is an isomer of hexane, B is benzene and C is an isomer of hexene.
  3. 3.A is a saturated cyclic hydrocarbon and B and C are unsaturated cyclic hydrocarbons.
  4. 4.A is cyclohexane and B and C are the isomers of benzene.

Hint

The student should look for the presence of double bonds in the structures to determine if they are unsaturated. They should also count the number of carbon atoms in each structure to determine if they are isomers of hexane or benzene.

Quick oral answer

The structures of A, B, and C are different types of cyclic carbon compounds. A and C are isomers of hexane, while B is benzene. The presence of double bonds in B makes it an unsaturated cyclic hydrocarbon, while A and C are saturated cyclic hydrocarbons.

Common mistakes

  1. 1.Confusing the structures of A, B, and C.
  2. 2.Not counting the number of carbon atoms correctly.
  3. 3.Not identifying the presence of double bonds correctly.

Analysis and explanation

The question requires the student to identify the correct option based on the structures of the three cyclic carbon compounds A, B, and C. The student needs to analyze the structures and determine whether they are saturated or unsaturated, and whether they are isomers of hexane or benzene.

Interesting facts

The structure of benzene was first proposed by Friedrich August Kekulé in 1865.

Benzene is a highly reactive molecule due to the presence of double bonds.

Hexane is a highly flammable liquid used as a solvent and fuel.

Question details

Q7 of 39 questions

Board
CBSE
Class
Class 10
Subject
Science
Year
2023
Section
Section A
Marks
1
Type
MCQ
Chapter
Carbon and its Compounds
Topic
Cyclic Carbon Compounds
Bloom's level
Analyzing
Syllabus topic
Cyclic Carbon Compounds

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Frequently asked questions

How many marks does this question carry in CBSE Class 10 Science 2023?

This question carries 1 mark in the CBSE Class 10 Science 2023 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Carbon and its Compounds" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Cyclic Carbon Compounds" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2023 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2023 paper.