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HSC Science (Computer Science) इयत्ता १२ वी - Maharashtra State Board Important Questions for Chemistry

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Chemistry
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Which of the following vitamins is water soluble?

  1. A
  2. D
  3. E
  4. B
Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Vitamins >> Classification of Vitamins

Which among the following vitamins is also known as riboflavin?

(A) B1

(B) B2

(C) B6

(D) B12

Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Vitamins >> Important Vitamins, Their Sources and Their Deficiency Diseases

Vitamin ‘C’ belongs to the class of—

(a) Vitamins of aliphatic series

(b) Vitamins of aromatic series

(c) Vitamins of alicyclic series

(d) Vitamins of heterocyclic series

 

Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Vitamins >> Classification of Vitamins

Inflammation of the tongue is due to the deficiency of:

Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Vitamins >> Important Vitamins, Their Sources and Their Deficiency Diseases

Which of the following vitamins is the vitamin of alicyclic series?

(A) Vitamin C

(B) Vitamin K

(C) Vitamin B

(D) Vitamin A

Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Vitamins >> Important Vitamins, Their Sources and Their Deficiency Diseases

What are the sources of Vitamin C and Vitamin K?

Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Vitamins >> Classification of Vitamins

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: [14.03] Vitamins
Concept: Biomolecules in the Cell > Proteins

Write industrial application of enzyme catalysis.

Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Proteins

Define α-amino acids.

Appears in 1 question paper
Chapter: [14.03] Vitamins
Concept: Biomolecules in the Cell > Proteins

Give scientific reasons:

On complete hydrolysis DNA gives equimolar quantities of adenine and thymine.

Appears in 1 question paper
Chapter: [14.04] Nucleic Acids
Concept: Biomolecules in the Cell > Nucleic Acids

The sugar component of nucleotide unit in RNA is _________________

Appears in 1 question paper
Chapter: [14.04] Nucleic Acids
Concept: Biomolecules in the Cell > Nucleic Acids

In which of the following structure of DNA carries genetic information of the organism?

Appears in 1 question paper
Chapter: [14.04] Nucleic Acids
Concept: Biomolecules in the Cell > Nucleic Acids

Draw structure of following.

2-Deoxy-D-ribose

Appears in 1 question paper
Chapter: [14.04] Nucleic Acids
Concept: Biomolecules in the Cell > Nucleic Acids

Give names of the purines.

Appears in 1 question paper
Chapter: [14.04] Nucleic Acids
Concept: Biomolecules in the Cell > Nucleic Acids

How are polythene and neoprene prepared?

Appears in 1 question paper
Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation

Amongst the followings, identify a copolymer?

(a) Orion                            

(b) PVC

(c) PHBV

(d) Teflon

Appears in 1 question paper
Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Copolymerisation

0.1 mole of Buckminster fullerene contains how many kg of carbon? [Atomic mass of carbon = 12]

Appears in 1 question paper
Chapter: [15] Polymers
Concept: Classification of Polymers> Based on Source or Origin

What is natural rubber?

(A) Cis-1,4-polyisoprene

(B) Neoprene

(C) Trans-1,4-polyisoprene

(D) Butyl rubber

Appears in 1 question paper
Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Rubber

Which of the following is polyamide ?

(a) Teflon

(b) Nylon  6,6

(c) Terylene

(d) Bakelite

 

Appears in 1 question paper
Chapter: [15] Polymers
Concept: Introduction to Polymers >> Nylon 66

Write any ‘two’ uses of terylene.

Appears in 1 question paper
Chapter: [15] Introduction to Polymer Chemistry
Concept: Some Important Polymers
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