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Chemistry

Chemistry
The percentage of oxygen in air is approximately

1
0.01
0.78
0.21

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Chemistry
Tar roads get damaged if there is

Stagnation of water on road
No sloping
No maintenance
Heavy traffic

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Chemistry
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

4.05 gram
2.05 gram
5.05 gram
3.05 gram

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Chemistry
Natural rubber is the polymer of :

Styrene
Butadiene
Ethylene
Isoprene

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Chemistry
Among the fuels given below, the one with highest calorific value is

Coke
Natural gas
Coal
Wood

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Chemistry
Alcohol prepared by the distillation of wood is :

Propyl alcohol
Glycerol
Ethyl alcohol
Methyl alcohol

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MORE MCQ ON Chemistry

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