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Chemistry

Chemistry
Liquid Nitrogen boils at

82 Kelvin
97 Kelvin
54 kelvin
77 kelvin

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Chemistry
Which one is the naturally occuring heaviest element

Thorium
Mercury
Uranium
Protactinium

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Chemistry
The alkaloid naturally found in coffee, cocoa and cola nut is

Cocaine
Caffeine
Tannin
Morphine

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Chemistry
Which one out of the following helps in burning ?

Oxygen
Carbon monoxide
Carbon dioxide
Nitrogen

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Chemistry
What is used in storage batteries?

Tin
Lead
Zinc
Copper

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Chemistry
Nitrogen is an essential constituent of all :

Carbohydrates
Fats
Proteins
Vitamins

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MORE MCQ ON Chemistry

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