PPSC Lecturer Chemistry Test 19 Online Preparation MCQs

1 Comment / By Hassan / October 14, 2020

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 19
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 19

1 / 25

The number of structural isomers of alcohols with molecular formula C3H7OH is:

2 / 25

Which of the following compounds will react with methylmagnesium bromide to give tert-butyl alcohol?

Acetyl chloride

3 / 25

The number of structural isomers of alcohols with molecular formula C4H9OH is:

4 / 25

n-Propylmagnesium bromide on treatment with carbon dioxide and further hydrolysis gives :

Acetic acid

5 / 25

Ethylmagnesium iodide reacts with formaldehyde to give a product which on acid-hydrolysis forms:

a primary alcohol

a ketone

an aldehyde

a ketone

6 / 25

Methanol is known as:

Grain alcohol

Rubbing alcohol

Grain alcohol

7 / 25

Which of the following has the highest boiling point?

n-propyl chloride

n-Butyraldehyde

n-propyl chloride

diethyl ether

8 / 25

Which of the following gives positive Iodoform test:

None of these

2-Propanol

1-Propanol

3-Propanol

9 / 25

Which of the following reagents will replace –OH group by a halogen atom?

Br2

HOCl

SOCl2

10 / 25

Ketones react with Grignard reagents to form an addition product which on hydrolysis gives a:

Tertiary alcohol

Secondary alcohol

Primary alcohol

Secondary alcohol

11 / 25

Phenylmagnesium bromide reacts with acetaldehyde to form an addition product which undergoes acid-hydrolysis to give:

Diphenylcarbinol

12 / 25

Which of the following compounds will react fastest with Lucas reagent?

2-methyl-1-propanol

2-propanol

2-methyl-2-propanol

1-propanol

13 / 25

Why do alcohols have boiling points much higher than hydrocarbons of similar molecular weight?

Alcohols have greater van der Waals attraction forces.

Hydrogen bonds must be broken in the process of volatilization.

Alcohol molecules have greater molecular symmetry.

Alcohols must overcome greater ionic forces in the process of volatilization.

14 / 25

Which of the following compounds will react with methylmagnesium iodide followed by acid-hydrolysis to give ethyl alcohol?

Acetaldehyde

Ethylene

15 / 25

Methanol is known as:

Rubbing alcohol

Wood alcohol

Denatured alcohol

Grain alcohol

16 / 25

The high boiling points of alcohols, as compared to the corresponding alkanes, are due to:

Hydrogen bonding

Heavy oxygen atom

17 / 25

Lucas reagents is:

H2/Pd

HCl/ZnCl2

HCl/NaNO2

H2/Pd/BaSO4

18 / 25

Which of the following alcohols can be prepared by the reaction of methyl formate with excess Grignard reagent?

2-pentanol

1-pentanol

19 / 25

Which of the following compounds reacts slowest with Lucas reagent at room temperature?

2-propanol

2-methyl-2-propanol

2-butanol

1-butanol

20 / 25

Grain alcohol is another name for:

Isopropyl alcohol

Methyl alcohol

n-Propyl alcohol

Ethyl alcohol

21 / 25

Lucas test is used to determine the type of:

alcohols

acids

amines

carbohydrates

22 / 25

Which of the following has the highest boiling point?

CH3CH2OCH2CH3

HOCH2CH2CH2CH2OH

CH3CH2CH2CH2Cl

HOCH2CH2CH2CH2OH

23 / 25

Which of the following is correct?

When a Grignard reagent reacts with a ketone, the addition product is a primary alcohol

When a Grignard reagent reacts with a ketone, the addition product is a secondary alcohol

None of the above are correct.

When a Grignard reagent reacts with a aldehyde, the addition product is a tertiary alcohol

24 / 25

Rectified spirit is:

90% Ethanol

100% Methanol

100% Ethanol

95% Ethanol

25 / 25

Rank the following substances in order of increasing boiling point (lowest → highest):
(1) CH3CH2CH2CH2OH, (2) (CH3)2CHOCH3, (3) (CH3)3COH

(3) < (2) < (1)

(1) < (2) < (3)

(2) < (3) < (1)

(2) < (1) < (3)

Your score is

The average score is 0%

1 thought on “PPSC Lecturer Chemistry Test 19 Online Preparation MCQs”

gillani786
October 24, 2020 at 12:26 pm
Brother aj rat tak upload ho jaen ge Inshallah
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