HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Important Questions

Write the chemical reaction for the following:

Chlorobenzene is heated with fuming H₂SO₄.

Write the structure of the product formed when chlorobenzene is treated with sodium metal in the presence of dry ether.

Explain the dehydrohalogenation reaction of 2-chlorobutane.

Write use of CFC.

Write environmental effect of CFC.

Write the product formed by Chlorobenzene treated with a fuming H₂SO₄ reaction.

What is the action of following on ethyl bromide?

silver nitrite

Among the following vinylic halide is ______.

What is the action of following on ethyl bromide?

alcoholic sodium hydroxide

Complete the reaction:

\[\ce{CH3CH2Cl ->[AgCN][alc.\Delta]}\] ?

 How is propene converted into 1- bromopropane and 2 - bromopropane?

The preparation of alkyl fluoride from alkyl chloride, in presence of metallic fluorides is known as ______________.

Identify the product ‘D’ in the following sequence of reactions:

\[\ce{H3C - CH2 - CH2 - Cl \underset{KOH}{\overset{Alc}{->}} 'B' \overset{HBr}{->} 'C' \underset{Elther}{\overset{Na}{->}}'D'}\]

Identify ‘A’ and ‘B’ in the following reaction :

\[\ce{CH3 - CH = CH2 ->[HBr]'A' ->[alc.KOH]'B'}\]

Discuss the mechanism of alkaline hydrolysis of bromomethane.

Alkyl halides are -

(a) Mono halogen derivatives of alkanes 

(b) Di halogen derivatives of alkanes

(c) Tri halogen derivatives of alkanes

(d) Tetra halogen derivatives of alkanes

Write the structures of - 3-chloro-3-ethylhex-1-ene

State and explain Markownikoff's rule with suitable example

which of the following carbocations is least stable?

(A) 

(B)

(C)

(D)

What is the action of bromine in alkaline medium on

i. CH₃CH₂NO₂

ii.