Question

a fuel X which neither leaves any residue on burning nor does it emit any smoke on combustion the fuel X is​

Answer 1

Explanation:

a fuel X which neither leaves any residue on burning nor does it emit any smoke on combustion the fuel X is

the ans is cng those were used in automobiles to reduce pollution

Answer 2

Concept:

A solid fossil fuel that may be burned, coal is a hard rock. While hydrogen, sulphur, oxygen, and nitrogen are all present, carbon makes up the majority of it. It is a sedimentary rock created from peat under pressure from rocks that were later deposited on top of it. An excellent chunk of anthracite coal. The remains of plants that once existed in tropical wetlands millions of years ago, such as those from the late Carboniferous period, result in the formation of peat, and consequently coal (the Pennsylvanian). Additionally, wood can be heated in an environment with no airflow to produce charcoal, which is similar to coal. Burning coal can provide heat or energy. Today, power plants burn around two-thirds of the coal that is mined to produce energy. Like oil, when coal is burned, the carbon in the fuel combines with the oxygen in the air to produce a large amount of carbon dioxide, which contributes to climate change. The majority of nations are switching to other energy sources like solar power as a result of this and other coal-related air pollution. But in other regions of the world, like China, new coal power plants are still being constructed. To make coke, coal can be roasted, or heated to a high temperature without any oxygen present. Metals can be extracted from their ores by smelting using coke.

Given: a fuel X which neither leaves any residue on burning nor does it emit any smoke on combustion

To find: the fuel X

Solution: The fuel X is coal which neither leaves any residue on burning nor does it emit any smoke on combustion.

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