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Chemistry

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

29 KJ
1 KJ
39 KJ
30 KJ

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Chemistry
The purest form of water is

Distilled water
Ground water
Tap water
Rain water

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Chemistry
Where does the oxygen that keeps us alive come from?

Carbonates absorbed from soil
Oxides of minerals
Water
Carbon dioxide

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Chemistry
Among the following the hardest metal is

Iron
Tungsten
Gold
Platinum

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Chemistry
The tip of the match-stick contains

Red phosphorus
Phosphorus trichloride
Phosphorus pentoxide
White phosphorus

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Chemistry
The length of double bond is _______ than single bond

Of same lenght
Longer
Shorter
None of these

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MORE MCQ ON Chemistry

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