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Hydrogen · Question 1

NEET (UG) 2026MCQEasy📈 Topic in 38% papers+4−1
1

Methane reacts with steam at 1273 K in the presence of nickel catalyst to form :

  1. CO and H2
  2. CO and H2O
  3. CO2 and H2
  4. CO2 and H2O

Answer

(1) CO and H2

Solution

As per NCERT, reaction of steam with hydrocarbons (or coke) at high temperature in the presence of a catalyst gives dihydrogen:

CH4(g) + H2O(g) Ni, 1273 K CO(g) + 3H2(g)

The mixture of CO and H2 is called water gas (syngas).

∴ Products: CO and H2

Answer: (1)

NEET (UG) 2026

Keep practising — Hydrogen

2

Which of the following statements are NOT correct? Choose the most appropriate answer from the options given below:

  1. B, D only
  2. D, E only
  3. A, B, C only
  4. B, C, D, E only
Out of syllabusNEET (UG) 2023
3

Match List-I with List-II. Choose the correct answer from the options given below:

  1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  2. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
  3. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
  4. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
NEET (UG) 2022
4

The element used for welding metals with high melting points is

  1. He
  2. Cl2
  3. H2
  4. Ne
Out of syllabusNEET (UG) 2022 (Phase 2)
5

Tritium, a radioactive isotope of hydrogen, emits which of the following particles?

  1. Neutron (n)
  2. Beta ( -)
  3. Alpha ( )
  4. Gamma ( )
Out of syllabusNEET (UG) 2021
6

Match the following and identify the correct option.

  1. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  2. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
  3. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
  4. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
NEET (UG) 2020
7

The method used to remove temporary hardness of water is :

  1. Ion-exchange method
  2. Synthetic resins method
  3. Calgon’s method
  4. Clark’s method
Out of syllabusNEET (UG) 2019
8

Among CaH2, BeH2, BaH2, the order of ionic character is

  1. BeH2 < CaH2 < BaH2
  2. CaH2 < BeH2 < BaH2
  3. BeH2 < BaH2 < CaH2
  4. BaH2 < BeH2 < CaH2
Out of syllabusNEET 2018
9

Which of the following statements about hydrogen is incorrect?

  1. Hydronium ion, H3O+ exists freely in solution.
  2. Dihydrogen does not act as a reducing agent.
  3. Hydrogen has three isotopes of which tritium is the most common.
  4. Hydrogen never acts as cation in ionic salts.
Out of syllabusNEET 2016 (Phase 1)
10

(I) H2O2 + O3 H2O + 2O2 (II) H2O2 + Ag2O 2Ag + H2O + O2 Role of hydrogen peroxide in the above reactions is respectively

  1. oxidizing in (I) and reducing in (II)
  2. reducing in (I) and oxidizing in (II)
  3. reducing in (I) and (II)
  4. oxidizing in (I) and (II)
AIPMT 2014
11

Some statements about heavy water are given below: Which of the above statements are correct?

  1. (i) and (ii)
  2. (i), (ii) and (iii)
  3. (ii) and (iii)
  4. (i) and (iii)
Out of syllabusAIPMT 2010 (Mains)

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