PPSC Lecturer Chemistry Test 36 Online Preparation MCQs

Leave a Comment / By Hassan / May 23, 2021

Given below on this Website Online Free Taleem is free online MCQ’s test related to PPSC of Lecturer Chemistry. All the individuals who are going to appear in PPSC Lecturer of Chemistry written test can attempt these tests in order to prepare for it in best possible way. Our tests include all the important questions MCQs of Lecturer of PPSC Chemistry, all Past Papers of Lecturer of Chemistry PPSC that have extremely high amount of chances for been included in the actual exam which make our test undoubtedly the best source of preparation.

Note:-

There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
Practice this test at least 5 times if you want to secure High Marks.
At the End of the Test you can see your Test score and Rating.
If you found any incorrect answer in Quiz. Simply click on the quiz title and comment below on that MCQ. So that I can update the incorrect answer on time.

Please Click Below START Button to Take this Lecturer Chemistry Test Online.

Test Instructions:-
Test Name	Lecturer Chemistry
Subject	Chemistry Test 36
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

PPSC LECTURER OF CHEMISTRY TEST NO. 36

1 / 25

Which of the following compounds will react most readily with concentrated sulfuric acid?

Cyclohexene

Cyclohexane

Propane

Ethane

2 / 25

The double helical structure of DNA is held together by

hydrogen bonding

sulfur-sulfur linkages

glycosidic bonds

peptide bonding

3 / 25

Which of the following molecules will decolorize bromine in carbon tetrachloride most readily?

Cyclohexane

1,2-Dimethylcyclobutane

1,2-Dimethylcyclopropane

Cyclopentane

4 / 25

Which of the cycloalkanes is not expected to have ring strain?

Cyclobutane

None of these

Cyclopropane

Cycloheptane

5 / 25

The linear arrangement of amino acid units in proteins is called :

quaternary structure

secondary structure

primary structure

tertiary structure

6 / 25

The α-Helix is held in a coiled conformation partially because of :

Hydrogen bonding

Delocalization

Optical activity

Resonance

7 / 25

Cycloalkanes have the same molecular formula as :

Alkenes

Alkynes

Cycloalkenes

Alkanes

8 / 25

A compound of formula C6H12 does not react with concentrated sulfuric acid.
The compound could be

Cycloalkane

Cycloalkene

Alkene

Alkane

9 / 25

Cyclohexanol can be converted into cyclohexene by heating with

Concentrated H2SO4

SOCl2

Zn(Hg) and HCl

H2 and Ni

10 / 25

Precipitation or coagulation of proteins may be caused by

Changes in pH

Heavy metal salts

Heat

All of these

11 / 25

Which of the following tests is not used for testing proteins?

Ninhydrin test

Xanthoproteic test

Tollens' test

Biuret test

12 / 25

A compound gives a positive Tollens' test but negative Ninhydrin test. It is

a monosaccharide

pyridine

an amino acid

a protein

13 / 25

Ninhydrin test is given by

Proteins

Alkanes

Carbohydrates

Alkenes

14 / 25

The α-Helix is a common form of

Tertiary structure

None of these

Secondary structure

Primary structure

15 / 25

The bond angle between carbon atoms in cyclohexane is

90°

109°28'

60°

120°

16 / 25

Which of the following cycloalkanes is most reactive?

Cyclopropane

Cyclobutane

Cycloheptane

Cyclohexane

17 / 25

The primary structure of a protein refers to :

whether the protein is fibrous or globular

the amino acid sequence in the polypeptide chain

the presence or absence of an α-helix.

the orientation of the amino acid side chains in space

18 / 25

Complete hydrolysis of proteins produces :

Glycogen and a fatty acid

A mixture of amino acids

Ammonia and carbon dioxide

Urea and uric acid

19 / 25

Cyclopropane reacts with concentrated HBr to give.

1-Bromopropane

Bromocyclopropane

1,2-Dibromopropane

2-Bromopropane

20 / 25

Upon hydrolysis, proteins give

Fatty acids

Amino acids

Alcohols

Hydroxy acids

21 / 25

Which of the following compounds will give cyclopropane on treatment with sodium in dry ether?

1,3-Dibromopropane

2,2-Dibromopropane

1,2-Dibromopropane

1,1-Dibromopropane

22 / 25

Irreversible precipitation of proteins caused by heating is called :

Denaturation

Inversion

Polymerisation

Electrophoresis

23 / 25

A protein solution on warming with concentrated HNO3 may turn yellow.
This test is called :

Million's test

Ninhydrin test

Xanthoproteic test

Biuret test

24 / 25

Cyclobutane reacts with hydrogen in the presence of nickel catalyst at 200°C to give

Butane

2-Butene

1-Butene

None of these

25 / 25

Digestion of proteins involves

removal of all carboxyl groups in the form of CO2.

cleavage of peptide linkages

removal of all NH2 groups in the form of NH3

changes in secondary structure only

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