PPSC Lecturer Chemistry Test 15 Online Preparation MCQs

Lecturer Chemistry MCQs / , , , , , , , , , , ,

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.
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Test Instructions:-
Test Name Lecturer Chemistry
Subject Chemistry Test 15
Test Type MCQs
Total Questions 25
Total Time 20 Minutes
Total Marks 100
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You have 20 minutes to pass to the quiz.

PPSC Lecturer of Chemistry Practice Test 15

1 / 25

How do the melting points of trans isomers compare to the cis isomers for alkenes?

2 / 25

The dehydrohalogenation of 2-bromobutane with alcoholic KOH gives mainly:

3 / 25

Why does a H+ ion attacking a carbon-carbon double bond add to the carbon with the least number of substituents?

4 / 25

Propene reacts with bromine to form 1,2-dibromopropane. This is an example of:

5 / 25

Ethylene is obtained from ethyl bromide by:

6 / 25

Gasoline with an octane number of 90 is equivalent in knocking characteristics to a mixture of heptane and isooctane of the following composition:

7 / 25

Which of the following compounds will show geometrical isomerism?

8 / 25

Which of the following methods can be used to increase the octane rating of gasoline?

9 / 25

Which hydrocarbon molecule with eight carbons would produce the lowest octane number (i.e., the most knocking) when used as a fuel in automobile?

10 / 25

A fuel with octane number 90 means it is as good as a mixture of:

11 / 25

In which solvent are alkenes most soluble?

12 / 25

Octane number is related to:

13 / 25

A knocking sound is produced in the engine when the fuel:

14 / 25

Which of the following compounds is assigned the Octane Number of zero:

15 / 25

The eclipsed and staggered forms of ethane are said to differ in:

16 / 25

In the reaction of ethylene with H2O in the presence of sulfuric acid, which one adds across the double bond first?

17 / 25

Why do trans isomers of alkenes have lower boiling points than cis isomers?

18 / 25

The carbon atoms involved in the double bond of an alkene are:

19 / 25

In the reaction of propene with HCl, H+ ion acts as the:

20 / 25

Which of the following compounds is assigned the Octane Number of 100:

21 / 25

In any fuel, the percentage by volume of isooctane in a mixture of isooctane and n-heptane which will knock under same conditions as the fuel being tested, is called :

22 / 25

Markovnikov's addition of HBr is not applicable to:

23 / 25

Which of the following compounds is used as an antiknock compound?

24 / 25

In the addition of HX to a double bond, the hydrogen goes to the carbon that already has more hydrogens is a statement of:

25 / 25

The octane rating of gasoline provides information on:

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