Q31 / 180 · NEET 2026 (Re-NEET) · Botany

Arrange the following elements in descending order of their contribution to percentage weight of the human body.
(a) Oxygen
(b) Carbon
(c) Hydrogen
(d) Nitrogen
Choose the correct answer from the options given below :

  • A
    (b), (a), (c), (d)
  • Correct answer
    B
    (a), (b), (c), (d)
  • C
    (c), (a), (b), (d)
  • D
    (b), (c), (d), (a)

Solution

The approximate contribution of various elements to the percentage weight of the human body is as follows:
Oxygen (O) $\approx 65.0\%$
Carbon (C) $\approx 18.5\%$
Hydrogen (H) $\approx 9.5\%$
Nitrogen (N) $\approx 3.3\%$

Arranging these elements in descending order of their percentage weight, we get:
Oxygen $>$ Carbon $>$ Hydrogen $>$ Nitrogen

This corresponds to the sequence (a), (b), (c), (d).

Answer: (a), (b), (c), (d)

Hence, the correct answer is option: 'B'.

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