info@jobexams.pk
Job Exams Hero

Master Your JobExams with Confidence

Access thousands of practice questions, and improve your test-taking skills with our comprehensive MCQ platform. Whether you're preparing for FPSC, NTS, PPSC, CSS, or any other job test, Jobexams provides the study material you need to succeed. Start practicing now and boost your chances of acing your exams!

Browse Categories
Quick Results 0 found

Question Coming Soon!

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

1 Physical Chemistry MCQs

The concept of ensemble in statistical mechanics was introduced by __________?

  • Boltzmann
  • Gibbs
  • Carnot
  • Maxwell
0 Comments
Correct Answer: B. Gibbs

Explanation:

In statistical mechanics, the term ensemble refers to a large collection of hypothetical ... Read More Details

2 Physical Chemistry MCQs

Which molecule has the strongest London dispersion forces?

  • Hydrogen gas
  • Water
  • Bromine
  • Hydrochloric acid
0 Comments
Correct Answer: B. Water

Explanation:

London dispersion forces are a type of van der Waals force present in ... Read More Details

3 Inorganic Chemistry MCQs

Urea used as a fertilizer contains __________ of nitrogen (N).

  • 57% N
  • 73% N
  • 46% N
  • 53% N
0 Comments
Correct Answer: C. 46% N

Explanation:

Urea (CO(NH₂)₂) is one of the most widely used nitrogenous fertilizers in agriculture. ... Read More Details

4 Physical Chemistry MCQs

Which of the following is the most viscous?

  • Glycerine
  • Water
  • Honey
  • Spirit
0 Comments
Correct Answer: C. Honey

Explanation:

Viscosity is a physical property of liquids that measures their resistance to flow. ... Read More Details

5 Physical Chemistry MCQs

Which of the following is not named after a scientist?

  • Pauli Exclusion Principle
  • Hund’s Rule
  • Aufbau Principle
  • Le-Chatelier’s Principle
0 Comments
Correct Answer: C. Aufbau Principle

Explanation:

In chemistry, many principles and rules are named after the scientists who discovered ... Read More Details

6 Environmental Chemistry MCQs

For the generation of biogas, the materials commonly used are ?

  • Animal wastes
  • Forest residues
  • Aquatic plants
  • None of the above
0 Comments
Correct Answer: A. Animal wastes

Explanation:

Biogas is a renewable source of energy produced by the anaerobic digestion of ... Read More Details

7 Inorganic Chemistry MCQs

What is the electronic configuration of Sodium (Na)?

  • 1s² 2s² 2p⁶
  • 1s² 2s² 2p⁶ 3s²
  • 1s² 2s² 2p⁶ 3s¹
  • None of these
0 Comments
Correct Answer: C. 1s² 2s² 2p⁶ 3s¹

Explanation:

Sodium (Na) is an element with atomic number 11. This means it has ... Read More Details

8 Environmental Chemistry MCQs

Air is a/an __________?

  • Compound
  • Element
  • Electrolyte
  • Mixture
0 Comments
Correct Answer: D. Mixture

Explanation:

Air is not a single substance but a physical mixture of different gases. ... Read More Details

9 Inorganic Chemistry MCQs

The element commonly used for the formation of alloys is __________?

  • Iron
  • Calcium
  • Mercury
  • Chromium
0 Comments
Correct Answer: D. Chromium

Explanation:

Alloys are mixtures of metals (or metals with non-metals) designed to improve specific ... Read More Details

10 Inorganic Chemistry MCQs

The bond energy of hydrogen fluoride (H–F) is __________?

  • 456 kJ/mol
  • 562 kJ/mol
  • 281 kJ/mol
  • None of these
0 Comments
Correct Answer: B. 562 kJ/mol

Explanation:

Bond energy refers to the amount of energy required to break one mole ... Read More Details

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