Rural households that burn wood and dung cake as fuel cause several adverse effects. Which one of the following is the odd one out in this respect?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Release of fly ash
Burning wood, dung cake and other biomass leads to deforestation, reduction in green cover, wastage of cattle dung and air pollution.
Fly ash comes from thermal power plants. It can pollute water bodies and land, but it has nothing to do with household fuel, so it is the odd one out.
NCERT (2026-27): “7.5 Strategies for Sustainable Development … Thermal power plants emit large quantities of carbon dioxide which is a green house gas. It also produces fly ash which, if not used properly, can cause pollution of water bodies, land and other components of the environment. …” “LPG, Gobar Gas in Rural Areas: Households in rural areas generally use wood, dung cake or other biomass as fuel. This practice has several adverse implications like deforestation, reduction in green cover, wastage of cattle dung and air pollution. To rectify the situation, subsidised LPG is being provided. …” |