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Karnataka Board PUCPUC Science 2nd PUC Class 12

PUC Science 2nd PUC Class 12 - Karnataka Board PUC Important Questions for Chemistry

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Chemistry
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Give the structures of A, B and C in the following reaction:

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Chapter: [9] Amines
Concept: Diazonium Salts >> Chemical Reaction of Diazonium Salts - Reactions Involving Displacement of Nitrogen

Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.

CH3NHCH(CH3)2

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Chapter: [9] Amines
Concept: Concept of Amines >> Nomenclature of Animes

Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.

(CH3CH2)2NCH3

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Chapter: [9] Amines
Concept: Concept of Amines >> Nomenclature of Animes

Account for the following:

Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

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Chapter: [9] Amines
Concept: Concept of Amines >> Nomenclature of Animes

Arrange the following:

In increasing order of basic strength:

C6H5NH2, C6H5NHCH3, C6H5CH2NH2

Appears in 1 question paper
Chapter: [9] Amines
Concept: Concept of Amines >> Chemical Reactions of Amines - Basic Character of Amines

Write a short note on the following:

Hoffmann’s bromamide reaction

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Chapter: [9] Amines
Concept: Preparation of Amines

Arrange the following:

In increasing order of solubility in water:

C6H5NH2, (C2H5)2NH, C2H5NH2

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Chapter: [9] Amines
Concept: Classification of Amines

Write the structural difference between starch and cellulose.

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Polysaccharides

Write the structural difference between starch and cellulose.

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Polysaccharides

Which one of the following is a polysaccharide:

Starch, Maltose, Fructose, Glucose

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Polysaccharides

Which one of the following is a polysaccharide:

Starch, Maltose, Fructose, Glucose

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Polysaccharides

Define the following terms as related to proteins :

Peptide linkage

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Peptide

Define the following term as related to proteins:

Denaturation

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Denaturation of Proteins

What are the products of hydrolysis of maltose?

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Oligosaccharides

What do you understand by the term glycosidic linkage?

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Disaccharides

Define the following terms:

Oligosaccharides

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Oligosaccharides

What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Nucleic Acids >> Chemical Composition of Nucleic Acids

Differentiate between  the following:

Fibrous proteins and Globular proteins

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Structure of Proteins

The two strands in DNA are not identical but are complementary. Explain.

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Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Nucleic Acids >> Structure of Nucleic Acids

Which of the following is a natural polymer ? Buna-S, Proteins, PVC

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Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation
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