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Practical VIVA in BIOCHEMISTRY

Total questions: 10

Worksheet time: 4mins

Name
Class
Date
1.

The chemical formed during benedicts test which gives brick red colour is

a)

Cupric hydroxide

b)

Cuprous hydroxide

c)

Cupric oxide

d)

Cuprous oxide

2.

The purple colour produced during Biuret reaction is due to the reaction of copper with

a)

Glycosidic bonds

b)

Hydrogen bonds

c)

Aminolinkages

d)

Peptide bonds

3.

Molisch reagent contains

a)

Alpha naphthol

b)

Resorcinol

c)

Orcinol

d)

Folins reagent

4.

0.1 Normal NaOH is formed when ------- NaOH is dissolved in 1 litre of water

a)

40 grams

b)

40 milligrams

c)

4 grams

d)

0.4 grams

5.

Approximate pH of stomach after a protein rich meal is

a)

7.35

b)

6.6

c)

4.4

d)

2.0

6.

The amino acid which gives yellow colour with Ninhydrin

a)

Proline

b)

Tryptophan

c)

Tyrosine

d)

Arginine

7.

Which among the following is NOT a polysaccharide

a)

Agar

b)

Heparin

c)

Chitin

d)

Dextrose

8.

Saline citrate is used in the quantitative estimation of

a)

Amino acids

b)

Albumin

c)

DNA

d)

Citric Acid

9.

Principle of Beers Lamberts Law is involved in the functioning of

a)

Calorimeter

b)

Colourimeter

c)

Flamephotometer

d)

Lambertometer

10.

Name the Protein used for making standards in Lowry method of Quantitative analysis of Protein

a)

BSA

b)

IgG

c)

Fibrinogen

d)

Casein