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
2. What type of reaction occurs when an acid and a base are combined?
a) Combustion
b) Decomposition
c) Neutralization
d) Oxidation
3. Which of these is the lightest element?
a) Helium
b) Hydrogen
c) Lithium
d) Carbon
4. What is the chemical formula for ammonia?
a) NH3
b) NH4
c) HNO3
d) H2N
5. Which metal forms a protective oxide layer when exposed to air?
a) Copper
b) Iron
c) Aluminum
d) Zinc
6. What is the common name for H2O2?
a) Hydrogen sulfide
b) Heavy water
c) Hydrogen peroxide
d) Hydronium
7. In which state of matter are particles packed the closest together?
a) Solid
b) Liquid
c) Gas
d) Plasma
8. Which metal is extracted from the ore bauxite?
a) Iron
b) Copper
c) Zinc
d) Aluminum
9. What is the molecular formula of glucose?
a) C6H12O6
b) C6H6
c) CH4
d) C3H6O3
10. Which of these is a noble gas?
a) Nitrogen
b) Argon
c) Chlorine
d) Oxygen
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
12. What is the most abundant element in the universe?
a) Oxygen
b) Hydrogen
c) Carbon
d) Nitrogen
13. Which gas is used in the manufacture of soft drinks to create carbonation?
a) Nitrogen
b) Hydrogen
c) Carbon dioxide
d) Oxygen
14. Which of these is an alkaline earth metal?
a) Sodium
b) Calcium
c) Copper
d) Iron
15. What is the main ingredient in common table sugar?
a) Fructose
b) Glucose
c) Sucrose
d) Lactose
16. What is the term for a solution with a pH lower than 7?
a) Basic
b) Neutral
c) Acidic
d) Alkaline
17. What is the lightest metal?
a) Lithium
b) Magnesium
c) Aluminum
d) Zinc
18. Which element is commonly used in thermometers and thermostats?
a) Lead
b) Mercury
c) Zinc
d) Iron
19. Which process separates a mixture based on differences in boiling points?
a) Filtration
b) Distillation
c) Evaporation
d) Decantation
20. Which acid is used in car batteries?
a) Hydrochloric acid
b) Sulfuric acid
c) Nitric acid
d) Phosphoric acid
21. Which metal has the highest density?
a) Iron
b) Gold
c) Osmium
d) Lead
22. Which is the smallest particle of a chemical element that retains its properties?
a) Atom
b) Molecule
c) Ion
d) Neutron
23. What is the chemical symbol for lead?
a) Pb
b) Ld
c) Pd
d) Po
24. Which substance is used in the production of fertilizers to supply nitrogen?
a) Ammonia
b) Methane
c) Oxygen
d) Helium
25. Which substance makes up 21% of Earth’s atmosphere?
a) Nitrogen
b) Carbon dioxide
c) Oxygen
d) Hydrogen
26. Which is the hardest element?
a) Iron
b) Diamond
c) Carbon
d) Titanium
27. What is the common name for the compound CaCO3?
a) Baking soda
b) Chalk
c) Salt
d) Limestone
28. Which gas turns limewater milky?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
29. What color does litmus paper turn in acidic solutions?
a) Blue
b) Red
c) Green
d) Yellow
30. Which process involves passing electricity through a liquid to separate ions?
a) Distillation
b) Filtration
c) Electrolysis
d) Condensation