EASY
8th CBSE
IMPORTANT
Earn 100

Undesirable substances that cause water pollution are called . (pollutants/ purifiers)

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Important Questions on Pollution: A Global Threat

EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 2
Consumption of contaminated water causes many _____ diseases (airborne/ waterborne)
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 3
Carbon monoxide increases the oxygen carrying capacity of blood.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 3
Leaded petrol causes less pollution.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 3
Global warming leads to melting of glaciers and polar ice caps.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 3
Only 1% of freshwater is found in rivers, lakes, streams, and ponds.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 3
Sulphur tablets are added to swimming pools for disinfecting water.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 4
The full form of BOD is Biological ____ demand.
EASY
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Put on your thinking cap>Q 4
Give the full form of CFC.