Match the following and identify the correct option. (a) CO(g) + H2(g); (i) Mg(HCO3)2 + Ca(HCO3)2 (b) Temporary hardness of water; (ii) An electron deficient hydride (c) B2H6; (iii) Synthesis gas (d) H2O2; (iv) Non-planar structure

NEET UG 2020 · Chemistry · Question 130

NEET 2020 Chemistry, question 130

Question 130 of the NEET 2020 paper (code E1) is a Chemistry question from Hydrogen. Its idea, Preparation of Dihydrogen, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q130 · Chemistry

\mathrm{CO(g) + H_2(g)}

1 (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv) Official answer 2 (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv) 3 (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i) 4 (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

Official answer: option 1 · NTA final answer key

Same idea

The only question on Preparation of Dihydrogen

No other NEET paper from 2017–2026 tested this exact idea.

Preparation of Dihydrogen: every question and how it was framed

The chapter

Hydrogen in ten years of NEET

6 questions from 2017–2026, asked in 6 of 10 papers, about 0.6 a paper. Hydrogen and Water alone had 6.

Chapter analysis

(a) $\mathrm{CO(g) + H_2(g)}$	(i) $\mathrm{Mg(HCO_3)_2 + Ca(HCO_3)_2}$
(b) Temporary hardness of water	(ii) An electron deficient hydride
(c) $\mathrm{B_2H_6}$	(iii) Synthesis gas
(d) $\mathrm{H_2O_2}$	(iv) Non-planar structure

The only question on Preparation of Dihydrogen

Hydrogen in ten years of NEET

Hydrogen: questions per paper