Chemistry
Diamond is lustrous because

It is pure
It is colourless
Its refractive index is high
It is hard

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Chemistry
Which of the process is known as nitrification?

Reaction of Nitrogen Monoxide with oxygen to form nitric acid
Reaction of nitrogen dioxide with water to form nitric acid
Conversion of ammonia to nitrites
Conversion of nitrite to nitric oxide

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Chemistry
Man dies in the atmosphere of CO, because it

Dries up the blood
Reduces the organic matter of tissues
Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2
Combines with O2 present in the body

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