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Chemistry

Chemistry
Litmus is obtained from

A bacterium
Lichen
A fungus
An alga

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Chemistry
Global warming is mainly due to accumulation of

Oxides of nitrogen
Carbon dioxide
Carbon monoxide
Oxides of sulphur

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Chemistry
Which of the following is also used as a Bio fertilizer?

Ammonia
None of these
Uric Acid
Urea

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Chemistry
Dry powder fire extinguishers contain

Sand and potassium carbonate
Sand
Sand and sodium carbonate
Sand and sodium bicarbonate

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Chemistry
The heat energy produced when the human body metabolises 1 gram of fat is

39 KJ
30 KJ
29 KJ
1 KJ

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Chemistry
Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful

Solar infrared radiation
CO2 in the air
SO2 in the air
Solar ultraviolet radiation

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