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Among solid, liquid and gaseous fuels — which is the EASIEST to control flame size and turn off?
AGaseous fuel like LPG with a knob valve
BAll three are equally easy
CLiquid fuel like kerosene
DSolid fuel like coal
Answer & Solution
Correct answer: A. Gaseous fuel like LPG with a knob valve
Gaseous fuels can be controlled instantly by opening or closing a valve — the flame on an LPG stove can be made larger, smaller, or turned off at once. Solid fuels (coal, wood) burn until they are exhausted or smothered; liquid fuels are intermediate.
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