Question

Alexander Flemming: penicillin; Priestley: _________

• A. nitrogen
• B. oxygen
• C. carbon dioxide
• D. hydrogen

Answer 1

The correct option is B

oxygen

Explanation for the correct option:

(b) Step-1: Find the relationship between the given set i.e.; Alexander Flemming: penicillin

Alexander Flemming discovered penicillin. So it is a relationship of discoverer and its discovery.

Step-2: Complete the given blank with a choice that shows the similar relationship as Alexander Flemming: penicillin

Priestley discovered Oxygen (O).

Explanation for the incorrect options:

(a) Nitrogen (N) was discovered by Daniel Rutherford.

(c) Carbon dioxide (CO₂) was discovered by Joseph Black.

(d) Hydrogen (H) was discovered by Henry Cavendish.

Hence, option (b) is correct.