info@jobexams.pk
Job Exams Hero

Chemistry MCQs

Prepare for competitive exams with our topic-wise Chemistry MCQs covering fundamental and advanced concepts. These multiple-choice questions include atomic structure, chemical bonding, periodic table, acids & bases, organic chemistry, thermodynamics, chemical equations, mole concept, electrochemistry, and biochemistry. Ideal for science students and job aspirants appearing in PPSC, FPSC, CSS, NTS, SPSC, BPSC, KPSC, ETEA, AJKPSC, and other testing services. A valuable resource for teachers, educators, and candidates targeting science educator posts, laboratory roles, and general science sections in public sector exams.

Browse Categories
Quick Results 0 found

Question Coming Soon!

"" isn't in our database yet, but we're adding new questions daily.

1 Chemistry MCQs

During winter in cold countries, the __________ is mixed to melt the ice on the icy roads.

  • Salt
  • Chlorine
  • Carbon dioxide
  • Water
0 Comments
Correct Answer: A. Salt

Explanation:

In cold countries, during winter, roads often become covered with ice, creating dangerous ... Read More Details

2 Chemistry MCQs

Oxidation is a chemical reaction involving the ?

  • Gain of Electrons
  • Loss of Electrons
  • Gain of Protons
  • Loss of Protons
0 Comments
Correct Answer: B. Loss of Electrons

Explanation:

Oxidation is a fundamental chemical process that occurs during many reactions, especially those ... Read More Details

3 Organic Chemistry MCQs

An alcohol produced during the formation of a soap process.

  • Butanol
  • Ethylene glycol
  • Ethanol
  • Glycerol
0 Comments
Correct Answer: D. Glycerol

Explanation:

Soap is produced through a chemical reaction called saponification, which involves heating natural ... Read More Details

4 Organic Chemistry MCQs

On oxidation, an alcohol gives an aldehyde with the same carbon atoms, the alcohol is____

  • Primary Alcohol
  • Secondary Alcohol
  • Tertiary Alcohol
  • None of these
0 Comments
Correct Answer: A. Primary Alcohol

Explanation:

Alcohols are classified into primary, secondary, and tertiary based on the number of ... Read More Details

5 Organic Chemistry MCQs

LiAlH4 converts Acetaldehyde into ___________?

  • Acetic acid
  • Methane
  • Ethyl alcohol
  • Methyl alcohol
0 Comments
Correct Answer: C. Ethyl alcohol

Explanation:

Lithium aluminium hydride (LiAlH₄) is a powerful reducing agent widely used in organic ... Read More Details

6 Physical Chemistry MCQs

If speed of gas molecules increases by twice on heating, what will be their kinetic energy?

  • Increases by two times
  • Increases by four times
  • Decreases by two times
  • Decreases by four times
0 Comments
Correct Answer: B. Increases by four times

Explanation:

The kinetic energy (KE) of gas molecules is directly related to their speed. ... Read More Details

7 Organic Chemistry MCQs

The oxidation of secondary alcohol gives ?

  • Alkane
  • Carboxylic acid
  • Acetylene
  • Ketone
0 Comments
Correct Answer: D. Ketone

Explanation:

Oxidation is one of the most important reactions in alcohol chemistry. Alcohols are ... Read More Details

8 Organic Chemistry MCQs

The molecular formula of Methane gas is___________?

  • NH3
  • CH4
  • CO2
  • C6H6
0 Comments
Correct Answer: B. CH4

Explanation:

Methane is the simplest hydrocarbon and the first member of the alkane series. ... Read More Details

9 Organic Chemistry MCQs

The molecular formula of Sucrose (Sugar) is___________?

  • NH3
  • C12H22O11
  • C6H12O6
  • C6H6
0 Comments
Correct Answer: B. C12H22O11

Explanation:

Sucrose is one of the most common sugars found in nature. It is ... Read More Details

10 Chemistry MCQs

Diamond is an allotropic form of ?

  • Carbon
  • Hydrogen
  • Nitrogen
  • Silicon
0 Comments
Correct Answer: A. Carbon

Explanation:

Diamond is an allotropic form of carbon, meaning it is one of the ... Read More Details

Question Categories
General Knowledge Category MCQ'S
Computer Category MCQ'S
Chemistry Category MCQ'S
Pak Departmental Laws & Rules MCQs