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

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Answer in one sentence.

Which amide does produce ethanamine by Hofmann bromamide degradation reaction?

Appears in 1 question paper
Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

The following amines is the product of Gabriel phthalimide synthesis.

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Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

Arrange the following compounds in increasing order of their boiling points.

Ethyl alcohol, Ethyl amine, Ethanoic acid, Ethane

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Chapter: [13.01] Amines
Concept: Physical Properties of Amines

Write the order of reactivity of alkyl halides with ammonia.

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Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

What is the action of nitrous acid on the following compounds?

Isopropyl amine

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Chapter: [13.01] Amines
Concept: Classification of Amines

Write reactions to bring about the following conversions.

Acetamide to Ethylamine

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Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

Explain Hoffmann’s exhaustive alkylation with suitable reactions.

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Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

Write the name of the product formed by the action of LiAlH4/ether on acetamide.

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Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

What is the action of the following reagents on ethyl amine?

Nitrous acid

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Chapter: [13.01] Amines
Concept: Amines >> Chemical Reactions of Amines - Reaction with Nitrous Acid

What is the action of the following reagents on ethyl amine?

Chloroform and caustic potash

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Chapter: [13.01] Amines
Concept: Amines >> Chemical Reactions of Amines - Carbylamine Reaction

Why amines are basic in nature?

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Chapter: [13.01] Amines
Concept: Introduction of Amines

Write the name of reduction product formed when ethyl cyanide is treated with sodium and alcohol.

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Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

Among dimethylamine (pKb = 3.27) and diethylamine (pKb = 3.0), which one is more basic?

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Chapter: [13.01] Amines
Concept: Amines >> Identification of Primary, Secondary and Tertiary Amines

What is Stephen reaction?

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Chapter: [13.02] Cyanides and Isocyanides
Concept: Cyanides and Isocyanides

Write preparation of ethyl cyanide from ethyl bromide.

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Chapter: [13.02] Cyanides and Isocyanides
Concept: Cyanides and Isocyanides

Write a note on Sandmeyer's reaction.

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Chapter: [13.03] Diazonium Salts
Concept: Diazonium Salts >> Importance of Diazonium Salts in Synthesis of Aromatic Compounds

What is the action of benzene diazonium chloride on Aniline

Appears in 1 question paper
Chapter: [13.03] Diazonium Salts
Concept: Diazonium Salts >> Importance of Diazonium Salts in Synthesis of Aromatic Compounds

\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.

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Chapter: [14] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates

Give scientific reasons:

α-Amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.

Appears in 1 question paper
Chapter: [14] Biomolecules
Concept: Biomolecules in the Cell > Proteins

Draw a neat diagram for the following:

Haworth formula of maltose

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Chapter: [14] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates
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