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 Inorganic Chemistry MCQs

What is the purpose of adding 2% gypsum to cement?

  • Triggers hydration
  • Triggers hydrolysis
  • Prevents rapid hardening
  • All of the above
0 Comments
Correct Answer: C. Prevents rapid hardening

Explanation:

Cement is a fine inorganic material that, when mixed with water, forms a ... Read More Details

2 Organic Chemistry MCQs

How many benzene rings are present in the fused polycyclic compound phenanthrene?

  • Two
  • Three
  • Four
  • Five
0 Comments
Correct Answer: B. Three

Explanation:

Phenanthrene is a polycyclic aromatic hydrocarbon (PAH) composed of three fused benzene rings ... Read More Details

3 Organic Chemistry MCQs

How many electrons in benzene (C₆H₆) form the delocalized π-electron cloud?

  • 3
  • 4
  • 6
  • 8
0 Comments
Correct Answer: C. 6

Explanation:

Benzene (C₆H₆) is a planar cyclic hydrocarbon consisting of six carbon atoms arranged ... Read More Details

4 International Organizations MCQs
Assistant Director - PESSI

When did Pakistan join the Southeast Asia Treaty Organization (SEATO)?

  • 1954
  • 1955
  • 1956
  • 1957
0 Comments
Correct Answer: A. 1954

Explanation:

Pakistan joined the Southeast Asia Treaty Organization (SEATO) in 1954. SEATO was established on September ... Read More Details

5 MS Office MCQs
Assistant Director - PESSI

Autocorrect is used to replace ___ words in a document?

  • Misused
  • Misspelled
  • Complicated
  • Abbreviated
0 Comments
Correct Answer: B. Misspelled

Explanation:

Autocorrect is a built-in feature in word processing software like Microsoft Word, Google Docs, and ... Read More Details

6 Organic Chemistry MCQs

When benzene is substituted by halogens, which halogen gets position 1 in naming the compound?

  • Bromine
  • Chlorine
  • Fluorine
  • Iodine
0 Comments
Correct Answer: C. Fluorine

Explanation:

In organic chemistry, when more than one halogen atom is attached to a ... Read More Details

7 Organic Chemistry MCQs

Benzene was discovered by Michael Faraday during the destructive distillation of vegetable oil in the ?

  • Presence of oxygen
  • Presence of hydrogen
  • Absence of oxygen
  • Presence of excessive oxygen
0 Comments
Correct Answer: C. Absence of oxygen

Explanation:

Benzene (C₆H₆) was discovered by Michael Faraday in 1825 during his experiments on ... Read More Details

8 Organic Chemistry MCQs

How many moles of hydrogen gas (H₂) react with benzene in the presence of a platinum catalyst?

  • 2
  • 3
  • 4
  • 6
0 Comments
Correct Answer: B. 3

Explanation:

Benzene (C₆H₆) is an aromatic compound with six carbon atoms connected in a ... Read More Details

9 Organic Chemistry MCQs

What is the resonance energy of benzene?

  • 150.5 kJ/mol
  • 250.5 kJ/mol
  • 150.5 cal/mol
  • 250.5 cal/mol
0 Comments
Correct Answer: A. 150.5 kJ/mol

Explanation:

Benzene (C₆H₆) is an aromatic compound with a unique stability that cannot be ... Read More Details

10 Organic Chemistry MCQs

Which catalyst is used to prepare benzene from acetylene at 70°C?

  • Cr₂O₃ + Al₂O₃ + SiO₂
  • Raney nickel
  • Organo-nickel
  • Ni (250–300°C)
0 Comments
Correct Answer: C. Organo-nickel

Explanation:

Benzene can be synthesized from acetylene (ethyne) by a process known as trimerization, ... Read More Details

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