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Chemistry

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

30 KJ
39 KJ
1 KJ
29 KJ

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Chemistry
Which one element from below list is liquid at room temperature

Argon
Zinc
Lead
Bromine

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Chemistry
Galvanised iron is made by coating iron with

Sulphur
Zinc
Chromium
Nickel

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Chemistry
The metal that is usually extracted from sea water is

K
Na
Mg
Ca

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Chemistry
Diamonds are glittering and attractive because light incident on them undergoes

Highest refraction
Multiple internal reflections
Hundred percent transmission
Multiple surface reflections

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Chemistry
In organic compounds, nitrogen is estimated by

Carius method
Liebig's method
Victor-Meyer's method
Dumas method

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