DIRECTIONS: These are Assertion-Reason type question.Question contains two statements:Statement-1 (Assertion) and Statement-2 (Reason). Answer these questions from the following four options.

Statement-1 : Vitamin B₅ is also called as pyridoxin.
Statement-2 : Deficiency of vitamin B₅ causes dermatitis and dementia.

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
Statement-1 is True, Statement-2 is True ; Statement-2 is NOT a correct explanation for Statement-1
Statement-1 is True, Statement-2 is False
Statement-1 is False, Statement-2 is True

Solution

Vitamin B₅ is also called as nicotinic acid. Nicotinic acid in the form of nicotinamide is found usually in all living cells in small amounts.

DIRECTIONS: These are Assertion-Reason type question.Question contains two statements:Statement-1 (Assertion) and Statement-2 (Reason). Answer these questions from the following four options.

Statement-1 :Sequence of bases in DNA is TGAACCCTT and sequence of bases in m-RNA is CATTAAACC.
Statement-2 : In DNA, nitrogenous bases have hydrogen bonds.

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
Statement-1 is True, Statement-2 is True ; Statement-2 is NOT a correct explanation for Statement-1
Statement-1 is True, Statement-2 is False
Statement-1 is False, Statement-2 is True

Solution

Sequence of bases in DNA is TGAACCCTT, since according to base-pairing principle, T in DNA faces A in m-RNA, while G faces C and A faces U. Therefore,sequence of bases in m-RNA is ACUUGGGAA.

DIRECTIONS: These are Assertion-Reason type question.Question contains two statements:Statement-1 (Assertion) and Statement-2 (Reason). Answer these questions from the following four options.

Statement-1 : Proteins on hydrolysis produce amino acids.
Statement-2 : Amino acids contain –NH₂ and –COOH groups.

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
Statement-1 is True, Statement-2 is True ; Statement-2 is NOT a correct explanation for Statement-1
Statement-1 is True, Statement-2 is False
Statement-1 is False, Statement-2 is True

Solution

Proteins on hydrolysis gives α-amino acid because amino acids are the building blocks of proteins. It is also fact that amino acids contain both –NH₂ and–COOH group.

Here statement-1 and statement-2 both are correct but statement-2 is not a correct explanation of statement-1.

DIRECTIONS: These are Assertion-Reason type question.Question contains two statements:Statement-1 (Assertion) and Statement-2 (Reason). Answer these questions from the following four options.

Statement-1:Hydrolysis of sucrose is known as inversion of cane sugar.
Statement-2 : Sucrose is a disaccharide.

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
Statement-1 is True, Statement-2 is True ; Statement-2 is NOT a correct explanation for Statement-1
Statement-1 is True, Statement-2 is False
Statement-1 is False, Statement-2 is True

Solution

Hydrolysis of sucrose is known as inversion of cane sugar because sucrose produce equimolecular mixture of glucose and fructose. Sucrose is dextrorotatory while glucose and fructose mixture is laevorotatory. Sucrose is disaccharide.

DIRECTIONS: These are Assertion-Reason type question.Question contains two statements:Statement-1 (Assertion) and Statement-2 (Reason). Answer these questions from the following four options.

Statement-1 : Glycine is amphoteric in nature.
Statement-2 : Glycine contains both acid and basic groups.

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
Statement-1 is True, Statement-2 is True ; Statement-2 is NOT a correct explanation for Statement-1
Statement-1 is True, Statement-2 is False
Statement-1 is False, Statement-2 is True