General Science- Chemistry GK MCQ and Quiz (Set 2)

General Science – Chemistry GK MCQ Quiz for Exam Preparation

General Science – Chemistry GK MCQ quiz for APSC, SSC, UPSC, and other competitive exams. This quiz covers important chemistry topics to help enhance your knowledge and prepare effectively for your exams.


General Science- Chemistry Quiz with MCQ

1. What is the main component of the mineral salt halite?

a) Sodium chloride
b) Calcium sulfate
c) Potassium nitrate
d) Magnesium chloride

(a) Sodium chloride

2. What type of reaction occurs when an acid and a base are combined?

a) Combustion
b) Decomposition
c) Neutralization
d) Oxidation

(c) Neutralization

3. Which of these is the lightest element?

a) Helium
b) Hydrogen
c) Lithium
d) Carbon

(b) Hydrogen

4. What is the chemical formula for ammonia?

a) NH3
b) NH4
c) HNO3
d) H2N

(a) NH3

5. Which metal forms a protective oxide layer when exposed to air?

a) Copper
b) Iron
c) Aluminum
d) Zinc

(c) Aluminum

6. What is the common name for H2O2?

a) Hydrogen sulfide
b) Heavy water
c) Hydrogen peroxide
d) Hydronium

(c) Hydrogen peroxide

7. In which state of matter are particles packed the closest together?

a) Solid
b) Liquid
c) Gas
d) Plasma

(a) Solid

8. Which metal is extracted from the ore bauxite?

a) Iron
b) Copper
c) Zinc
d) Aluminum

(d) Aluminum

9. What is the molecular formula of glucose?

a) C6H12O6
b) C6H6
c) CH4
d) C3H6O3

(a) C6H12O6

10. Which of these is a noble gas?

a) Nitrogen
b) Argon
c) Chlorine
d) Oxygen

(b) Argon

11. What is the name of the process by which a solid turns directly into a gas?

a) Melting
b) Freezing
c) Condensation
d) Sublimation

(d) Sublimation

12. What is the most abundant element in the universe?

a) Oxygen
b) Hydrogen
c) Carbon
d) Nitrogen

(b) Hydrogen

13. Which gas is used in the manufacture of soft drinks to create carbonation?

a) Nitrogen
b) Hydrogen
c) Carbon dioxide
d) Oxygen

(c) Carbon dioxide

14. Which of these is an alkaline earth metal?

a) Sodium
b) Calcium
c) Copper
d) Iron

(b) Calcium

15. What is the main ingredient in common table sugar?

a) Fructose
b) Glucose
c) Sucrose
d) Lactose

(c) Sucrose

16. What is the term for a solution with a pH lower than 7?

a) Basic
b) Neutral
c) Acidic
d) Alkaline

(c) Acidic

17. What is the lightest metal?

a) Lithium
b) Magnesium
c) Aluminum
d) Zinc

(a) Lithium

18. Which element is commonly used in thermometers and thermostats?

a) Lead
b) Mercury
c) Zinc
d) Iron

(b) Mercury

19. Which process separates a mixture based on differences in boiling points?

a) Filtration
b) Distillation
c) Evaporation
d) Decantation

(b) Distillation

20. Which acid is used in car batteries?

a) Hydrochloric acid
b) Sulfuric acid
c) Nitric acid
d) Phosphoric acid

(b) Sulfuric acid

21. Which metal has the highest density?

a) Iron
b) Gold
c) Osmium
d) Lead

(c) Osmium

22. Which is the smallest particle of a chemical element that retains its properties?

a) Atom
b) Molecule
c) Ion
d) Neutron

(a) Atom

23. What is the chemical symbol for lead?

a) Pb
b) Ld
c) Pd
d) Po

(a) Pb

24. Which substance is used in the production of fertilizers to supply nitrogen?

a) Ammonia
b) Methane
c) Oxygen
d) Helium

(a) Ammonia

25. Which substance makes up 21% of Earth’s atmosphere?

a) Nitrogen
b) Carbon dioxide
c) Oxygen
d) Hydrogen

(c) Oxygen

26. Which is the hardest element?

a) Iron
b) Diamond
c) Carbon
d) Titanium

(b) Diamond

27. What is the common name for the compound CaCO3?

a) Baking soda
b) Chalk
c) Salt
d) Limestone

(d) Limestone

28. Which gas turns limewater milky?

a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen

(c) Carbon dioxide

29. What color does litmus paper turn in acidic solutions?

a) Blue
b) Red
c) Green
d) Yellow

(b) Red

30. Which process involves passing electricity through a liquid to separate ions?

a) Distillation
b) Filtration
c) Electrolysis
d) Condensation

(c) Electrolysis

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