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Chemistry

Chemistry
The weight of 6.023 × 1022 atoms of carbon is

12 gms
1.2 gms
120 gms
0.12 gms

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Chemistry
The iron ore magnetite consists of

FeCO3
Fe2O3
Fe3OH4
3Fe2O3 .. 3H2O

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Chemistry
Acid rain is caused due to pollution of atmosphere by

None of these
Oxides of nitrogen and phosphorous
Oxides of nitrogen and sulphur
Oxides of carbon and nitrogen

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Chemistry
Helium gas is used in gas balloons instead of hydrogen gas because it is

Non-combustible
More stable
Lighter than hydrogen
More abundant than hydrogen

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Chemistry
Sour milk contains

Tartaric acid
Acetic acid
Lactic acid
Citric acid

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Chemistry
The gas which emits from rice field is

Methane
Nitrogen
Ethane
All of these

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MORE MCQ ON Chemistry

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