16. If a child is ill, you would need to consult a
- (A) Optician
- (B) Nephrologist
- (C) Botanist
- (D) Pediatrician
Answer:
Explanation:
17. Who discovered Penicillin?
- (A) Einstein
- (B) Isaac Newton
- (C) Galileo
- (D) Alexander Fleming
Answer:
Explanation:
18. How much % of oxygen is there in the air?
- (A) 78%
- (B) 21%
- (C) 1%
- (D) 12%
Answer:
Explanation:
19. If you cool a gas, it may ______ into a liquid:
- (A) condense
- (B) evaporate
- (C) freeze
- (D) melt
Answer:
Explanation:
20. The part of an atom with a negative electrical charge is the:
- (A) Electron
- (B) Proton
- (C) Neutron
- (D) Atomic nucleus
Answer:
Explanation: