PUC Science 2nd PUC Class 12 - Karnataka Board PUC Question Bank Solutions for Chemistry

Predict all the alkenes that would be formed by dehydrohalogenation of the following halide with sodium ethoxide in ethanol and identify the major alkene:

2-Chloro-2-methylbutane

Predict all the alkenes that would be formed by dehydrohalogenation of the following halide with sodium ethoxide in ethanol and identify the major alkene:

2, 2, 3-Trimethyl-3-bromopentane

How will you bring about the following conversion?

But-1-ene to but-2-ene

Write the structure of the major organic product in the following reaction:

\[\ce{(CH3)3CBr + KOH ->[ethanol][heat]}\]

How the following conversion can be carried out?

1-Bromopropane to 2-bromopropane

How the following conversion can be carried out?

2-Chloropropane to 1-propanol

How the following conversion can be carried out?

2-Bromopropane to 1-bromopropane

What happens when PCl₅ is heated?

Write a balanced equation for the hydrolytic reaction of PCl₅ in heavy water.

Can PCl₅ act as an oxidising as well as a reducing agent? Justify.

Give the structure of the product you would expect when the following alcohol reacts with HCl–ZnCl₂.

2-Methylbutan-2-ol

Give the structure of the product you would expect when the following alcohol reacts with HBr.

Butan-1-ol

Give the structure of the product you would expect when the following alcohol reacts with HBr.

2-Methylbutan-2-ol

Give the structure of the product you would expect when the following alcohol reacts with SOCl₂.

Butan-1-ol

Compare acidity of phenol with that of ethanol.

Define “Molar conductivity”.

State Kohlrausch’s law of independent migration of ions.

The conductivity of 0.20 M solution of KCl at 298 K is 0.025 S cm⁻¹. Calculate its molar conductivity.

Complete the following reactions:

State Kohlrausch Law.