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Chemistry

Chemistry
Glycol is used to manufacture which of the following ?

Rubber
Terylene
Artificial silk
Nylon

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Chemistry
What is the atomic number of mercury

41
63
80
32

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Chemistry
If water smells bad, then that odour can be removed by adding

Bleach
Activated carbon
Alum
Deactivated nitrogen

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Chemistry
Which one of the following organic compounds has fruity smell?

Ether
Aldehyde
Ester
Alcohol

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Chemistry
What is the element that is in the highest percentage in the composition of the earth ?

Oxygen
Magnesium
Silicon
Iron

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Chemistry
Ozone saves the biosphere by absorbing high energy radiations called ________ .

Infra-red (IR)
Ultraviolet rays (UV)
X–rays
Gamma rays

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MORE MCQ ON Chemistry

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