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

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What is the action of the following on ethyl bromide:
moist silver oxide

Appears in 1 question paper
Chapter: [10.01] Haloalkanes
Concept: Reactions of Haloalkanes - Nucleophilic Substitution Reactions

Why alkyl halides though polar are immiscible with water?

Appears in 1 question paper
Chapter: [10.01] Haloalkanes
Concept: Physical Properties of Haloalkanes and Haloarenes

How is chlorobenzene converted into diphenyl/biphenyl?

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Concept of Haloalkanes and Haloarenes >> Reaction with Metals

Write a note on Friedel Craft’s acylation.

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Concept of Haloalkanes and Haloarenes >> Electrophilic Substitution Reactions

Draw structure of DDT.

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Polyhalogen Compounds

which of the following carbocations is least stable?

(A) 

(B)

(C)

(D)

 

 

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Nature of C-X Bond of Haloalkanes and Haloarenes

Why does p-nitrochlorobenzene undergo displacement reactions readily with attack of nucleophilic HOΘ ion?

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Concept of Haloalkanes and Haloarenes >> Nucleophilic Substitution

Write the environmental effects of DDT.

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Polyhalogen Compounds

Explain only reaction mechanism for alkaline hydrolysis of tert-butyl bromide

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Concept of Haloalkanes and Haloarenes >> Electrophilic Substitution Reactions

Give balanced equations for the following reactions:

Acetic anhydride with phosphorus pentachloride.

Appears in 1 question paper
Chapter: [10.02] Haloarenes
Concept: Polyhalogen Compounds

Explain metamerism with suitable examples of ethers

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

Ethylidene dichloride when boiled with aqueous solution of NaOH yields _______.

(A) formaldehyde

(B) acetaldehyde

(C) acetone

(D) ethyl methyl ketone

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

Natalite is a mixture of

(a) diethyl ether and methanol

(b) diethyl ether and ethanol

(c) dimethyl ether and methanol

(d) dimethyl ether and ethanol

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

Which of the following compounds is NOT prepared by the action of alcoholic NI3 on alkyl halide?

(a) CH3NH2

(b) CH3- CH2- NH2

(c) CH3 - CH2 - CH2 - NH2

(d) (CH3)C- NH2

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

Write the structure and IUPAC name of 'methyl-n-propyl ether'.

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Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

What is the action of hot HI on it?

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

3-Methylbutane-2-ol on heating with HI gives ______

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

How is phenol converted into the following?

picric acid

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Nomenclature of Alcohols, Phenols and Ethers

Choose the correct option.

Which of the following substrate will give ionic organic products on reaction?

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Classification of Alcohols, Phenols and Ethers

Anisole on heating with concentrated HI gives ______.

Appears in 1 question paper
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Ethers
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