Chemistry MCQs

Explore an extensive collection of Chemistry MCQs covering all key topics of Chemistry Mcqs are including organic chemistry, inorganic chemistry, physical chemistry, atomic structure, chemical bonding, stoichiometry, thermodynamics, kinetics, acids and bases, periodic table, and more. Perfect for students preparing for board exams, competitive tests, and university-level assessments in Pakistan

Chemistry MCQs

Frost Black ice Frozen ice Black hail

A. Frost

B. Black ice

C. Frozen ice

D. Black hail

Chemical Name of Dry Ice?

A. Solid Carbon Dioxide

B. Calcium Carbon

C. A&B

D. Sodium Oxide

Disolved oxygen (DO) in water should be?

A. 400 to 800 ppm

B. 4000 to 8000 ppm

C. 0.4 to 0.5 ppm

D. 4 to 5 ppm

Why normal rain is slightly acidic?

A. due to presence of dust in air

B. carbon dioxide and water in clouds react to form carbonic acid

C. Ozone depletion

D. All of these

The yellow colour in photochemical smog is due to the presence of____________?

A. Sulphur dioxide

B. Carbon dioxide

C. Nitrogen dioxide

D. CFC’s

The natural fats and oils are composed of——–?

A. Hydrogen, Oxygen and Nitrogen

B. Carbon, Oxygen and Nitrogen

C. Carbon, Hydrogen and Nitrogen

D. Carbon, Hydrogen and Oxygen

Which instrument is used to measure wind speed is?

A. Anemometer

B. Hygrometer

C. Barometer

D. Hydrometer

The source of oxygen is photosynthesis is——–?

A. Glucose

B. Minerals

C. Salts

D. Water

The gas, commonly known as “Laughing gas”, is——–.

A. Sodium Oxide

B. Nitrous Oxide

C. Sulfur Dioxide

D. Carbon Dioxide

Diamond is an allotropic form of ———-?

A. Carbon

B. Hydrogen

C. Nitrogen

D. Silicon

MCQs (Category wise)

Departmental Solved Past Papers

National Highway & Motorway
Intelligence Bureau
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Pakistan Academy of Letters
Ministry of National Food Security & Research
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Survey of Pakistan
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Election Commission of Pakistan
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