Change set

Pick exam & year, then Go.

Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q103 (CAPF/2026) Geography › Indian Economic Geography

With reference to fossil fuels, consider the following statements :
1. Coal is the most abundant fossil fuel and has high specific energy and energy density.
2. The action of heat and pressure changes plant matter in stages from anthracite to bituminous to lignite coal.
Which of the statements given above is/are correct?

Result
Your answer: —  ·  Correct: D

Explanation

Statement 1 is incorrect: While coal is the most abundant fossil fuel globally, it has the lowest specific energy and energy density among the three primary fossil fuels (Natural Gas > Petroleum > Coal). Specific energy is the energy per unit mass, and energy density is the energy per unit volume. Coal's lower hydrogen-to-carbon ratio compared to oil and gas results in lower energy content per kilogram.

Statement 2 is incorrect: The coalification process involves the transformation of organic matter (peat) into coal through increasing heat and pressure over geological time. The stages of coal formation in order of increasing carbon content and quality are: Peat → Lignite → Bituminous → Anthracite. The statement incorrectly suggests the process moves from anthracite (highest grade) to lignite (lowest grade).

How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
0%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

IAS · 2014 · Q38 Relevance score: 2.65

With reference to two non-conventional energy sources called 'coalbed methane' and 'shale gas', consider the following statements : 1. Coalbed methane is the pure methane gas extracted from coal seams, while shale gas is a mixture of propane and butane only that can be extracted from fine-grained sedimentary rocks. 2. In India, abundant coalbed methane sources exist, but so far no shale gas sources have been found. Which of the statements given above is/are correct?

IAS · 2020 · Q29 Relevance score: 1.32

Consider the following statements : 1. Coal ash contains arsenic, lead and mercury. 2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment. 3. High ash content is observed in Indian coal. Which of the statements given above is/are correct ?

NDA-I · 2008 · Q81 Relevance score: 0.69

Consider the following statements : 1. Coal is a sedimentary rock. 2. Basalt is an igneous rock. Which of the statements given above is/are correct?

CDS-I · 2023 · Q105 Relevance score: 0.18

Consider the following statements and identify the correct answer using the code given below: 1. In a thermal power station, fuels such as oil, coal, or natural gas are used to generate electricity. 2. Fuels are burned to heat water and turn it into steam, which goes through a turbine, which spins and turns, generating electricity.

IAS · 2023 · Q11 Relevance score: -0.13

Consider the following statements : Statement-I : India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II : Uranium, enriched to the extent of at least 60%, is required for the production of electricity. Which one of the following is correct in respect of the above statements?