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Chemistry

Chemistry
Hardest allotrope of carbon is

Coke
Diamond
Graphite
Lamp black

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Chemistry
Polythene is polymer of

Propylene
Acetylene
Aniline
Ethylene

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Chemistry
In a period from Li to F, ionisation potential

Decreases
Cannot be predicted
Remains same
Increases

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Chemistry
The major component in the LPG is

Methane
Ethane
Butane
Propane

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Chemistry
High concentration hydrocarbon pollutants in atmospheric air causes

Silicosis
Respiratory diseases (e.g.asthma)
Cancer
Reduced crop yield

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Chemistry
Acid rain' is caused due to air - pollution by

Nitrous oxide and sulphur dioxide
Methane
Carbon monoxide
Carbon dioxide

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MORE MCQ ON Chemistry

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