PPSC Chemistry Part II Organic Chemistry Online Test With Answers

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PPSC Chemistry Part II Organic Chemistry Online Test

Sr. # Questions Answers Choice
1 Cytosine a pyrimidine base pairs with Guanine Thymine Adenine Any of these
2 The unit of nucleic acid having base sugar combination is called. Nucliec acid Nucleoside Nucleotide None of these
3 The sugar present in RNA is D- ribose D-Arabinose D-Glucose Deoxyribose
4 The sugar present in DNA is D- Ribose D-Glucose 2- Doxy D-Ribose 3-Deoxy D-ribose
5 The one which is not a purine base Cytosine Guanine None of these Adenine
6 Which of the following is not a pyrimidine base. Uracil Thymine Cytosine Guanine
7 The base which in not present in DNA is Adenine Guanine Thymine Cytosine
8 Complete hydrolysis of nucleotide result in the formation of. Heterocyclic bases A pentose A phosphate ion All of these
9 Hydrolysis of nucleoprotein result in the formation of. Proteins Nucleic acids Both A and B They do not hydrolyse
10 Urea an enzyme used to estimate urea is a Hydrolytic enzyme Oxidative enzyme Reductive enzyme Iso me rising enzyme
11 An stereospecific enzyme in one which catalyses Formation of one stercolsomer Reaction of one stereoisomer only Both of these None of these
12 Co enzyme cna be separated from enzyme by Precipitation Dalysis Hydrolysis Distillation
13 Apoenzyme is Hydrolytic enzyme Oxidative enzyme Coenzyme Protein part of enzyme after removal of coenzyme
14 Enzymatic action is heat at a fixed Temparature pH Both of these None of these
15 Oxidative enzymes are responsible for Biological processes Biological oxidation Biological hydrolysis Biological isomerisation
16 Enzymes are Complex non living compunds Laving organisms Complex protein molecules Bacterial colonies
17 Proteins have characteristics Melting poirn t Iso electric point Boiling point All of these
18 Putrefaction is Hydrolysis of proteins Reduction of proteins Bacterial oxidation of proteins All of these
19 Molecular weight of proteins may be determined by Osmotic pressure measurements Sedimentation methods Light scattering methods All of these
20 Coagulation of protein on treatment with heavy motal salts or heating is called. Decolorisation Denaturation <sup>Sedimentation process</sup> Reversible precipitation
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