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HSC Science (Computer Science) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Chemistry

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Chemistry
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Answer in brief.

Write formulae of the following complex.

Potassium amminetrichloroplatinate (II)

[9] Coordination Compounds
Chapter: [9] Coordination Compounds
Concept: undefined >> undefined

Identify chiral molecule/s from the following.

[10] Halogen Derivatives
Chapter: [10] Halogen Derivatives
Concept: undefined >> undefined

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Anisole on heating with concentrated HI gives ______.

[11] Alcohols, Phenols and Ethers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Choose the correct option.

Ethers react with cold and concentrated H2SO4 to form ________.

[11] Alcohols, Phenols and Ethers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Answer the following in one sentence.

Write reaction showing conversion of benzonitrile into benzoic acid.

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer the following in one sentence.

Name the product obtained by the oxidation of 1,2,3,4-tetrahydronaphthalene with acidified potassium permanganate.

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer the following in one sentence.

Acetic acid is prepared from methyl magnesium bromide and dry ice in presence of dry ether. Name the compound which serves not only as reagent but also as a cooling agent in the reaction.

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer in brief.

Write reaction showing the action of the following reagent on propanenitrile:

Dilute NaOH

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer in brief.

Write reaction showing the action of the following reagent on propanenitrile:

Dilute HCl

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Choose the most correct option.

Which one of the following compounds has the highest boiling point?

[13.01] Amines
Chapter: [13.01] Amines
Concept: undefined >> undefined

Choose the most correct option.

Which of the following has the highest basic strength?

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

What is the action of the following reagent on toluene?

Alkaline KMnO4, dil. HCl and heat

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is the action of the following reagent on toluene?

CrO2Cl2 in CS2

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

What is the action of the following reagent on toluene?

Acetyl chloride in presence of anhydrous AlCl3.

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer in one sentence.

Write the order of the basicity of aliphatic alkylamine in the gaseous phase.

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

Answer in one sentence.

Why are primary aliphatic amines stronger bases than ammonia?

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

Write reaction showing conversion of p-bromoisopropylbenzene into p-isopropylbenzoic acid (3 steps).

[12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Answer in one sentence.

Arrange the following amines in increasing order of boiling points.

n-propylamine, ethylmethyl amine, trimethylamine.

[13.01] Amines
Chapter: [13.01] Amines
Concept: undefined >> undefined

Answer in one sentence.

Arrange the following amines in the increasing order of their pKb values.

Aniline, Cyclohexylamine, 4-Nitroaniline

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined

Explain the basic nature of amines with a suitable example.

[13] Amines
Chapter: [13] Amines
Concept: undefined >> undefined
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