How many cycloalkene isomers exist for C₅H₈ which contain at least one methyl locant directly present on the ring?

a)
2

b)
3

c)
4

d)
5

Correct answer is option 'D'. Can you explain this answer?

Question

How many cycloalkene isomers exist for C5H8 which contain at least one methyl locant directly present on the ring?a)2b)3c)4d)5Correct answer is option 'D'. Can you explain this answer?

Answer

1methylcyclobutene,3methylcyclobutene,1ethylcyclopropene,1,1-dimethylcyclopropene,1,2-dimethylcyclopropene,1,3-dimethylcyclopropene

Answer

Answer

**Explanation:**

To determine the number of cycloalkene isomers of C5H8 that contain at least one methyl locant directly present on the ring, we need to draw out all possible structures and count them.

**Step 1: Drawing Cycloalkene Isomers**

First, let's draw all possible cycloalkene isomers of C5H8:

1. Cyclopentene:
- CH2 = CH - CH2 - CH2 - CH2

2. 1-Methylcyclobutene:
- CH3 - CH = CH - CH2 - CH2

3. 2-Methylcyclobutene:
- CH2 = CH - CH2 - CH = CH - CH3

4. 1-Methylcyclopentene:
- CH3 - CH = CH - CH2 - CH2

5. 2-Methylcyclopentene:
- CH2 = CH - CH2 - CH = CH - CH3

6. 3-Methylcyclopentene:
- CH2 = CH - CH2 - CH2 - CH = CH - CH3

**Step 2: Counting the Isomers**

Now, let's count the isomers that contain at least one methyl locant directly present on the ring:

1. Cyclopentene: No methyl locant directly present on the ring.
2. 1-Methylcyclobutene: Contains one methyl locant directly present on the ring.
3. 2-Methylcyclobutene: Contains one methyl locant directly present on the ring.
4. 1-Methylcyclopentene: Contains one methyl locant directly present on the ring.
5. 2-Methylcyclopentene: Contains one methyl locant directly present on the ring.
6. 3-Methylcyclopentene: Contains one methyl locant directly present on the ring.

Therefore, there are a total of **6 cycloalkene isomers** of C5H8 that contain at least one methyl locant directly present on the ring.

Hence, the correct answer is option **D) 6**.

Answer

D 6

Similar Class 11 Doubts

How many different alkyne isomers upon hydrogenation in the presence of CaCO3 / Pd gives 4-methyl hexene which is simultaneously c/s at double bond? Correct answer is '2'. Can you explain this answer?

How many different isomers of alkene with molecular formula C7H14, on catalytic hydrogenation, can give 3-methyl hexane? Correct answer is '9'. Can you explain this answer?

Direction (Q. Nos. 1 - 12) This section contains 12 multiple choice questions. Each question has four choices (

The lattice enthalpy of an ionic compound is the enthalpy when one mole of an ionic compound present in its gaseous state, dissociates into its ions. It is impossible to determine it directly by experiment. Suggest and explain an indirect method to measure lattice enthalpy of NaCl(s).?

In principle, how many different monocarboxylic isomers, on decarboxylation with soda lime, can give the same 3-methyl pentane? Correct answer is '8'. Can you explain this answer?

Top Courses for Class 11View all

Chemistry Class 11

CUET Mock Test Series

English Class 11

Chemistry Practice Tests: CUET Preparation

CUET Mock Test: Humanities Subjects 2025

Top Courses for Class 11

Top Courses for Class 11

Suggested Free Tests

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams