matter?
a) Atom
b) Molecule
c) Electron
d) Proton
Answer: a) Atom
2. What is the chemical symbol for gold?
a) Au
b) Ag
c) Fe
d) Hg
Answer: a) Au
3. What is the process by which plants make
their own food?
a) Respiration
b) Photosynthesis
c) Transpiration
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, d) Fermentation
Answer: b) Photosynthesis
4. What is the main function of the kidneys in the
human body?
a) Digestion
b) Respiration
c) Excretion
d) Circulation
Answer: c) Excretion
5. Which vitamin is also known as ascorbic acid?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K
Answer: b) Vitamin C
6. What is the hardest substance found in the
human body?
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, a) Enamel
b) Bone
c) Cartilage
d) Dentin
Answer: a) Enamel
7. The gas used for artificial ripening of fruits is:
a) Oxygen
b) Nitrogen
c) Ethylene
d) Carbon dioxide
Answer: c) Ethylene
8. Which disease is caused by the deficiency of
Vitamin D?
a) Scurvy
b) Rickets
c) Beriberi
d) Pellagra
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, Answer: b) Rickets
9. Which planet is known as the "Red Planet"?
a) Earth
b) Mars
c) Jupiter
d) Saturn
Answer: b) Mars
10. What is the unit of measurement of electric
current?
a) Volt
b) Ampere
c) Watt
d) Ohm
Answer: b) Ampere
11. What is the chemical formula of water?
a) H2O
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