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

Explain formation of peptide linkage in protein with an example.

Presence of disulphide link gives rise to which structure of protein?

Write a classification of proteins with an example.

What are enzymes?

Name any two diseases caused by deficiency of Vitamin A

Which of the following vitamins is water soluble?

1. A
2. D
3. E
4. B

Which among the following vitamins is also known as riboflavin?

(A) B1

(B) B2

(C) B6

(D) B12

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

Inflammation of the tongue is due to the deficiency of:

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

(A) Vitamin C

(B) Vitamin K

(C) Vitamin B

(D) Vitamin A

What are the sources of Vitamin C and Vitamin K?

Give scientific reasons:

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

Write industrial application of enzyme catalysis.

Define α-amino acids.

Give scientific reasons:

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

The sugar component of nucleotide unit in RNA is _________________

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

Draw structure of following.

2-Deoxy-D-ribose

Give names of the purines.

How are polythene and neoprene prepared?