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1 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

2 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

3 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

4 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

5 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

6 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

7 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

8 Pakistan Studies MCQs
Assistant Director - PESSI

Taluja Fort is located in which country?

  • India
  • Pakistan
  • Nepal
  • Bangladesh
0 Comments
Correct Answer: B. Pakistan

Explanation:

Taluja Fort (also known as Tulaja Fort) is located in the Soon Valley of the ... Read More Details

9 Chemistry MCQs

Why is CO₂ a gas while SiO₂ is a solid at room temperature?

  • Carbon non-metal, silicon semi-metal
  • CO₂ = molecule, SiO₂ = network structure
  • CO₂ forms multiple bonds, silicon does not
  • Silicon has only sigma bonds
0 Comments
Correct Answer: B. CO₂ = molecule, SiO₂ = network structure

Explanation:

The difference in physical state between carbon dioxide (CO₂) and silicon dioxide (SiO₂) ... Read More Details

10 Inorganic Chemistry MCQs

Which of the following statements about carbon monoxide (CO) is correct?

  • It combines with H₂O to form carbonic acid
  • It reacts with the hemoglobin in red blood cells
  • It is a powerful oxidizing agent
  • It is used to prepare aerated drinks
0 Comments
Correct Answer: B. It reacts with the hemoglobin in red blood cells

Explanation:

Carbon monoxide (CO) is a simple molecule composed of one carbon atom and ... Read More Details

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