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Chemistry

Chemistry
Pyrethrin used in mosquito coil is obtained from

A bacterium
An insect
A seed plant
A fungus

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Chemistry
Which of the following vegetable oils does not contain essential fatty acids ?

Coconut oil
Mustard oil
Sunflower oil
Groundnut oil

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Chemistry
Philosopher’s wool is chemically

Zinc oxide
Aluminium oxide
Magnesium oxide
Calcium oxide

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Chemistry
The hardest form of carbon is

graphite
coke
charcoal
diamond

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Chemistry
Haloarenes are more stable than haloalkanes due to

All of them
Resonance effect
Inductive effect
Hyper conjugative effect

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Chemistry
The highest volume of gases in lower atmosphere is comprised of

Oxygen
Carbon dioxide
Hydrogen
Nitrogen

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