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

Draw the structure of the major monohalo product in the following reaction:

\[\ce{CH3CH2Br + NaI ->}\]

A hydrocarbon C₅H₁₀ does not react with chlorine in dark but gives a single monochloro compound C₅H₉Cl in bright sunlight. Identify the hydrocarbon.

Write the equation for the preparation of 1-iodobutane from 1-butanol.

Write the equation for the preparation of 1-iodobutane from 1-chlorobutane.

How will you bring about the following conversion?

Ethanol to but-1-yne

How will you bring about the following conversion?

Propene to 1-nitropropane

How will you bring about the following conversion?

Propene to propyne

How will you bring about the following conversion?

Ethanol to ethyl fluoride

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

\[\ce{CH3CH2CH2Cl + NaI ->[acetone][heat]}\]

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

\[\ce{CH3CH2CH = CH2 + HBr->[peroxide]}\]

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

\[\ce{CH3CH = C(CH3)2 + HBr ->}\]

Primary alkyl halide C₄H₉Br (a) reacted with alcoholic KOH to give compound (b). Compound (b) is reacted with HBr to give (c) which is an isomer of (a). When (a) is reacted with sodium metal it gives compound (d), C₈H₁₈ which is different from the compound formed when n-butyl bromide is reacted with sodium. Give the structural formula of (a) and write the equations for all the reactions.

How the following conversion can be carried out?

Propene to propan-1-ol

How the following conversion can be carried out?

Benzyl alcohol to 2-phenylethanoic acid

How the following conversion can be carried out?

2-Methyl-1-propene to 2-chloro-2-methylpropane

How the following conversion can be carried out?

But-1-ene to n-butyliodide

How will you convert: Phenol to 2, 4, 6 − trinitrophenol?

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

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