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 Environmental Chemistry MCQs

Boron in soil is considered a micronutrient essential for _____________?

  • Soil porosity
  • Proper growth of plants
  • Alkalinity of soil
  • All of the above
0 Comments
Correct Answer: B. Proper growth of plants

Explanation:

Boron is an essential micronutrient required in very small amounts by plants for ... Read More Details

2 Inorganic Chemistry MCQs

Which substance is found in the dried-up lakes of Tibet and California?

  • Tincal
  • Boric acid
  • Calcium carbonate
  • Colemanite
0 Comments
Correct Answer: A. Tincal

Explanation:

Tincal, commonly known as natural borax, is a hydrated sodium borate mineral with ... Read More Details

3 Inorganic Chemistry MCQs

Which of the following elements does not give the Borax bead test?

  • Cu (Copper)
  • Cr (Chromium)
  • Ni (Nickel)
  • Al (Aluminium)
0 Comments
Correct Answer: D. Al (Aluminium)

Explanation:

The Borax bead test is a classic qualitative analysis method used in inorganic ... Read More Details

4 Inorganic Chemistry MCQs

Which metal is used in the thermite process because of its high chemical activity?

  • Iron
  • Copper
  • Aluminium
  • Zinc
0 Comments
Correct Answer: C. Aluminium

Explanation:

The thermite process, also known as the alumino-thermic process, is a metallurgical method ... Read More Details

5 Inorganic Chemistry MCQs

Which of the following elements shows the inert pair effect?

  • Boron
  • Carbon
  • Silicon
  • Tin
0 Comments
Correct Answer: D. Tin

Explanation:

The inert pair effect refers to the tendency of the two outermost s-electrons ... Read More Details

6 Inorganic Chemistry MCQs

Tincal is a mineral of which element?

  • Al (Aluminium)
  • Si (Silicon)
  • B (Boron)
  • C (Carbon)
0 Comments
Correct Answer: C. B (Boron)

Explanation:

Tincal is a naturally occurring mineral that serves as an important source of ... Read More Details

7 Inorganic Chemistry MCQs

Which one of the following is not a semiconductor?

  • Si (Silicon)
  • Ge (Germanium)
  • Se (Selenium)
  • Sn (Tin)
0 Comments
Correct Answer: D. Sn (Tin)

Explanation:

A semiconductor is a substance whose electrical conductivity lies between that of a ... Read More Details

8 Inorganic Chemistry MCQs

The process used for the extraction of aluminium is called ____________?

  • Hall process
  • Thermite process
  • Haber process
  • Contact process
0 Comments
Correct Answer: A. Hall process

Explanation:

The industrial extraction of aluminium is carried out by the Hall-Héroult process, named ... Read More Details

9 Inorganic Chemistry MCQs

An aqueous solution of borax above 62°C gives crystals of which compound?

  • Na₂B₄O₇·4H₂O
  • Na₂B₄O₇·5H₂O
  • Na₂B₄O₇·2H₂O
  • Na₂B₄O₇·10H₂O
0 Comments
Correct Answer: B. Na₂B₄O₇·5H₂O

Explanation:

Borax, chemically known as sodium tetraborate (Na₂B₄O₇·10H₂O), is a well-known inorganic compound that ... Read More Details

10 Inorganic Chemistry MCQs

Which of the following is not a use of silicon?

  • Lubricants
  • Hydraulic brakes
  • Antifreeze
  • Water repellent
0 Comments
Correct Answer: B. Hydraulic brakes

Explanation:

Silicon is a non-metallic element belonging to group 14 of the periodic table. ... Read More Details

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