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Chemistry

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

30 KJ
39 KJ
29 KJ
1 KJ

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Chemistry
Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs?

Methane
Helium
Nitrogen
Hydrogen

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Chemistry
Alum is used as

A fertilizer
A purifier for water
An analgesic
A disinfectant

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Chemistry
The main buffer system of the human blood is

H2CO3 - HCO3
CH3COOH - CH3COO-
NH2CONH2 - NH2CONH+
H2CO3 - CO32-

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Chemistry
The hardest form of carbon is

coke
charcoal
graphite
diamond

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Chemistry
Mark the compound which possess ionic, covalent and coordinate bonds.

SO2
SO3
NH4Cl
H2O

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MORE MCQ ON Chemistry

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