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Chemistry

Chemistry
What is a Bakelite ?

Acid
Solution
Base
Polymer

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Chemistry
When iron rusts, its weight

Decreases
Increases
First increases and then decreases
Remains the same

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Chemistry
Which of the following is ozone depleting pesticide ?

D.T.
Ethylene ozonide
Methyl bromide
Benzene

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Chemistry
The maximum number of isomers for an alkene with molecular formula C4H8 is

5
2
3
4

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Chemistry
The process which does not evolve CO2 in air is

Organic delay
Burning
Breathing
Photosynthesis

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Chemistry
The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

nitrogen
oxygen
carbon
hydrogen

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