Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NDA 2025
Exam
NDA
Year
2025
Subject
General Ability
Chapter
General Science

NDA 2025 · General Ability · General Science

Which one of the following is known as 'water gas'?

Which one of the following is known as 'water gas'?

Options

  1. AH2O+CO2H_2O + CO_2
  2. BNH3NH_3
  3. CH2+N2H_2 + N_2
  4. DCO+H2CO + H_2

Correct answer

D. CO+H2CO + H_2

Step-by-step solution

Water gas is a mixture of carbon monoxide (CO)andhydrogengas(H2) and hydrogen gas (H_2).

It is produced by passing steam over red-hot coke at high temperatures:

C(s)+H2O(g)→CO(g)+H2(g)C(s) + H_2O(g) \rightarrow CO(g) + H_2(g)

This mixture is also known as synthesis gas or syngas.

Answer: CO+H2CO + H_2
Practice General Science on Quantrex Academy →

More from General Science

For an object in gravitational field, the gravitational potential is the same at two… NDA 2026A very large container consists of an ideal gas. The speed of sound in the gas is x .… NDA 2026A constant power machine pulls a block on a smooth horizontal surface. Which one of the… NDA 2026A ball is dropped from rest from height h above the ground in frame S (the Earth's… NDA 2026A pendulum of length L oscillates with an angular amplitude of θ = 60^ ^ ∘ and time… NDA 2026A solid of mass m has temperature-dependent specific heat as C(T) = C_0 + α T , where C_0… NDA 2026In a certain process, the relation between pressure (P) and volume (V) , for an ideal… NDA 2026An object is placed far beyond the centre of curvature of a concave mirror. The object… NDA 2026 Full General Science list All NDA PYQs