Selected MCQ

Current Question
In electrochemistry, the anode is the electrode where:
  • A. Reduction occurs
  • B. Oxidation occurs
  • C. Electrons enter the cell from external circuit
  • D. Cations are always reduced
Correct Answer: B
Explanation:
Oxidation always occurs at the anode by definition.
Related Question 1
Which energy source is sustainable?
  • A. Coal
  • B. Oil
  • C. Solar
  • D. Gas
Correct Answer: C
Explanation:
Solar is sustainable.
Related Question 2
Which instrument measures air pressure?
  • A. Hygrometer
  • B. Barometer
  • C. Thermometer
  • D. Anemometer
Correct Answer: B
Explanation:
Barometer measures pressure.
Related Question 3
Which cycle involves runoff?
  • A. Nitrogen
  • B. Carbon
  • C. Water
  • D. Rock
Correct Answer: C
Explanation:
Runoff is water cycle component.
Related Question 4
Which process produces zygote?
  • A. Pollination
  • B. Fertilization
  • C. Germination
  • D. Transpiration
Correct Answer: B
Explanation:
Fusion of gametes forms zygote.
Related Question 5
Which vitamin aids blood clotting?
  • A. A
  • B. B
  • C. K
  • D. D
Correct Answer: C
Explanation:
Vitamin K helps clotting.