General knowledge simple science questions for kids 2025

Here are some simple general knowledge science questions for kids.

 

1. Who is known as the father of modern chemistry?

A. Antoine Lavoisier

B. Dmitri Mendeleev

C. Robert Boyle

D. Joseph Priestley

Answer: A. Antoine Lavoisier

2. What is the chemical symbol for gold?

A. Ag

B. Au

C. Hg

D. Pb

Answer: B. Au

3. Which gas makes up about 78% of the Earth's atmosphere?

A. Oxygen

B. Nitrogen

C. Carbon dioxide

D. Helium

Answer: B. Nitrogen

4. What is the process by which plants convert sunlight into energy?

A. Respiration

B. Photosynthesis

C. Fermentation

D. Transpiration

Answer: B. Photosynthesis

5. What is the hardest naturally occurring substance?

A. Diamond

B. Graphite

C. Quartz

D. Corundum

Answer: A. Diamond

6. What is the chemical symbol for water?

A. H2O

B. CO2

C. O2

D. N2

Answer: A. H2O

7. Which element has the atomic number 1?

A. Helium

B. Hydrogen

C. Oxygen

D. Nitrogen

Answer: B. Hydrogen

8. What is the process of rusting an example of?

A. Combustion

B. Oxidation

C. Fermentation

D. Polymerization

Answer: B. Oxidation

9. Which scientist discovered the element phosphorus?

A. Robert Boyle

B. Antoine Lavoisier

C. Hennig Brand

D. Joseph Priestley

Answer: C. Hennig Brand

10. What is the term for a substance that speeds up a chemical reaction without being consumed?

A. Catalyst

B. Reactant

C. Product

D. Inhibitor

Answer: A. Catalyst

11. What is the chemical symbol for Mercury?

A. Ag

B. Au

C. Hg

D. Pb

Answer: C. Hg

12. Which type of bond involves the sharing of electrons between atoms?

A. Ionic bond

B. Covalent bond

C. Hydrogen bond

D. Electrostatic bond

Answer: B. Covalent bond

13. What is the pH of a neutral solution?

A. 0

B. 7

C. 14

D. 28

Answer: B. 7

14. Which element is a noble gas?

A. Carbon

B. Oxygen

C. Neon

D. Nitrogen

Answer: C. Neon

15. What is the process of combining two or more liquids that don't normally mix?

A. Emulsification

B. Polymerization

C. Fermentation

D. Distillation

Answer: A. Emulsification

16. Who developed the periodic table?

A. Antoine Lavoisier

B. Dmitri Mendeleev

C. Robert Boyle

D. Joseph Priestley

Answer: B. Dmitri Mendeleev

17. What is the chemical symbol for silver?

A. Ag

B. Au

C. Hg

D. Pb

Answer: A. Ag

18. Which type of reaction involves the release of heat?

A. Endothermic

B. Exothermic

C. Catalytic

D. Neutralization

Answer: B. Exothermic

19. What is the study of the properties and behavior of metals?

A. Metallurgy

B. Mineralogy

C. Geology

D. Materials science

Answer: A. Metallurgy

20. What is the term for a substance that donates a proton (H+ ion)?

A. Acid

B. Base

C. Salt

D. Catalyst

Answer: A. Acid

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