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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

Most atoms are neutral because:

Number of protons are equals to number of neutrons

Number of electrons are equals to number of neutrons

Number of electrons are equals to number of Protons

None of the Above

2 / 25

Nucleus have:

Electrons

Electrons and Protons

Neutrons and Protons

Neutrons

3 / 25

One of the major sources of organic compounds is:

Fermentation

Atmosphere

Natural gas

Sea water

4 / 25

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

silicon

oxygen

sulfur

nitrogen

5 / 25

The electro-negativity of carbon is:

2.55

3.44

2.65

3.04

6 / 25

What is the purpose of plasticizers?

Cross-link polymer chains

Harden plastics

Initiate polymerizations

Soften plastics

7 / 25

The state of Carbon is:

Liquid

Plasma

Solid

Gass

8 / 25

The electronic configuration of carbon is:

2s2

2s22p3

2s22p4

2s22p2

9 / 25

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

Eugene Goldstien

john Dalton

James Chadwick

Sir Earnest Rutherford

10 / 25

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

Positive Charge

None of the Above

Negative charge

Become nuteral

11 / 25

Which one of the following is used to make Teflon?

Fluoroethene

1,1,4,4-tetrafluorobutadiene

Tetrafluoroethylene

1,2-difluoroethene

12 / 25

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

Only II

Both II and III

Only III

Only I

13 / 25

Who record the first evidence of existence of an Atom:

John Dalton

Joseph John Thomson

Rutherford

Eugene Goldstein

14 / 25

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

None of the Above

Negative charge

Positive Charge

Become neutral

15 / 25

An Atom Consists of:

Nucleus, Proton, Neutron and Electron

Nucleus and Proton

Nucleus, Proton and eclectron

Nucleus, Proton and Neutron

16 / 25

Electrons have always:

No charge

sometimes positive and sometimes negative

Negative Charge

Positive Charge

17 / 25

n an atom numbers of protons are equal to:

Numbers of Electrons

Neither a nor b

Both a and b

Numbers of Neutrons

18 / 25

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

bond with other carbon atoms

exist in plant and animal form

form double and triple bonds

form bonds in its ground state

19 / 25

Carbon is discovered in:

3750 BC

1772

3550 BC

3650 BC

20 / 25

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

They usually have low melting points.

They usually are only slightly soluble or insoluble in water

Bonds which bind the atoms together are nearly always ionic

If water soluble they seldom conduct an electric current

21 / 25

The atomic mass of carbon is:

1.0107

13.0107

14.0107

12.0107

22 / 25

In stable organic compounds, carbon will always form:

2 bonds

5 bonds

4 bonds

3 bonds

23 / 25

Polymers which soften on heating and harden when cooled are:

Copolymers

Cross-linked polymers

Thermoplastics

Thermosetting polymers

24 / 25

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

Ethylene glycol.

Benzoyl peroxide.

Formaldehye

Sulfur

25 / 25

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

20000

10000

30000

40000

Your score is

The average score is 62%

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