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Chemistry

Chemistry
The weight of 6.023 × 1022 atoms of carbon is

12 gms
1.2 gms
0.12 gms
120 gms

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Chemistry
The buffer action of blood is due to the presence of

CI– and [CO3]2–
CI– and [HCO3]–
HCI and NaCI
[HCO3]– and H2CO3

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Chemistry
The lightest gas which is non-inflammable is

Hydrogen
Nitrogen
Helium
Oxygen

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Chemistry
Removal of carbon particles from air involves the principle of

Filteration
Sedimentation
Precipitation
Electrophoresis

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Chemistry
The reaction intermediate formed during the preparation of diethylether from ethanol by treatment with H2SO4 is

Carbocation
Carbene
Free radical
Carbanion

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Chemistry
The source of energy that causes the least global warming is

Petroleum
Natural Gas
Geothermal energy
Coal

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