Chemistry Subject Special MCQs

PPSC FPSC KPPSC BPSC SPSC Lecturer Chemistry Online Test No.2

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, FPSC, KKPSC, SPSC, BPSC, AJ&KPSC, NTS 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.
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Test Instructions:-
Test Name	Lecturer Chemistry
Subject	Chemistry Test 2
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 Practice Test 2

1 / 25

Polymers which soften on heating and harden when cooled are:

Thermosetting polymers

Copolymers

Cross-linked polymers

Thermoplastics

2 / 25

n an atom numbers of protons are equal to:

Numbers of Electrons

Numbers of Neutrons

Neither a nor b

Both a and b

3 / 25

Catenation is a property of the carbon atom which describes its ability to:

form bonds in its ground state

exist in plant and animal form

bond with other carbon atoms

form double and triple bonds

4 / 25

What is the purpose of plasticizers?

Cross-link polymer chains

Soften plastics

Initiate polymerizations

Harden plastics

5 / 25

Which of the following is not a characteristic of organic compounds?

Bonds which bind the atoms together are nearly always ionic

If water soluble they seldom conduct an electric current

They usually have low melting points.

They usually are only slightly soluble or insoluble in water

6 / 25

Carbon is discovered in:

1772

3550 BC

3650 BC

3750 BC

7 / 25

In stable organic compounds, carbon will always form:

5 bonds

4 bonds

3 bonds

2 bonds

8 / 25

Vulcanization is the process of cross-linking polymer chains in rubber using:

Benzoyl peroxide.

Formaldehye

Sulfur

Ethylene glycol.

9 / 25

Which scientist explored that nucleus is very small and have positive charge:

James Chadwick

john Dalton

Sir Earnest Rutherford

Eugene Goldstien

10 / 25

The atomic mass of carbon is:

1.0107

12.0107

14.0107

13.0107

11 / 25

Who record the first evidence of existence of an Atom:

John Dalton

Rutherford

Joseph John Thomson

Eugene Goldstein

12 / 25

The state of Carbon is:

Plasma

Gass

Solid

Liquid

13 / 25

An Atom Consists of:

Nucleus, Proton, Neutron and Electron

Nucleus, Proton and eclectron

Nucleus, Proton and Neutron

Nucleus and Proton

14 / 25

The element least likely to be found in an organic compound is:

sulfur

silicon

nitrogen

oxygen

15 / 25

Which of the following are condensation polymers?
I. Polypropylene
II. Teflon
III. Nylon

Only II

Only III

Only I

Both II and III

16 / 25

The electro-negativity of carbon is:

2.65

3.04

3.44

2.55

17 / 25

Most atoms are neutral because:

Number of electrons are equals to number of Protons

None of the Above

Number of protons are equals to number of neutrons

Number of electrons are equals to number of neutrons

18 / 25

One of the major sources of organic compounds is:

Fermentation

Sea water

Atmosphere

Natural gas

19 / 25

Atom is.................................times bigger than nucleus:

40000

10000

30000

20000

20 / 25

Electrons have always:

Negative Charge

sometimes positive and sometimes negative

Positive Charge

No charge

21 / 25

When electrons are added, An ion gains .............

None of the Above

Become nuteral

Positive Charge

Negative charge

22 / 25

When electrons are removed, An ion gains .....................

Become neutral

None of the Above

Positive Charge

Negative charge

23 / 25

Nucleus have:

Neutrons and Protons

Neutrons

Electrons

Electrons and Protons

24 / 25

Which one of the following is used to make Teflon?

1,2-difluoroethene

Fluoroethene

Tetrafluoroethylene

1,1,4,4-tetrafluorobutadiene

25 / 25

The electronic configuration of carbon is:

2s22p3

2s22p2

2s22p4

2s2

Your score is

The average score is 62%

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