Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Haloalkanes and Haloarenes

Short Answer Type

1. Write structures of the following compounds:
2-chloro-3-methylpentane

2413 Views

2. Write structures of the following compounds:
1-chloro-4-ethylcyclohexane

1780 Views

3. Write structures of the following compounds:
4-tert-Butyl-3-iodohaptane

1174 Views

4. Write structures of the following compounds:
1, 4-Dibromo but-2-ene

1417 Views

5. Write structures of the following compounds:
1-Bromo-4-sec butyl-2-methyl benzene.

4277 Views

6. Why is sulphuric acid not used during the reaction of alcohols with KI?

H₂SO₄ cannot be used along with KI in the conversion of an alcohol to an alkyl iodide as it oxidizes KI in the presence of sulphuric acid (H₂SO₄) to corresponding HI and then to I₂ i.e.,

KI produces HI, In the presence of sulphuric acid (H₂SO₄).
2KI + H₂SO₄ --> 2KHSO₄ +2HI

Since H₂SO₄ is an oxidizing agent, it oxidizes HI( Produced in the reaction to I₂).

2HI + H₂SO₄ --> I₂ +SO₂ +H₂O

As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI. Instead, a non-oxidiznig acid such H₃PO₄ is used.

351 Views

7. Write structures of different dihalogen derivatives of propane.

233 Views

8. Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i) A single monochloride.

274 Views

9. Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i)Three isomeric monochlorides.

323 Views

10. Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

153 Views