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Chemistry

Chemistry
Among the following, carbonate ore of Zinc is

Calamine
Sphalerite
Zincblende
Zincite

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Chemistry
The quality of petrol is expressed in terms of

Gold number
Cetane number
Octane number
Added unlead compounds

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Chemistry
The heat value of combustion of Gasoline is

39400 kJ/kg
14600 kJ/kg
12600 kJ/kg
47000 kJ/kg

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Chemistry
The smog is essentially caused by the presence of

O2 and O3
O2 and N2
Oxides of N and S
O3 and N2

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Chemistry
Alum stops bleeding in minor cuts because of

Emulsion
Coagulation
Solvation
Dialysis

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Chemistry
Sulphuric acid is

Tetrabasic
Tribasic
Dibasic
Monobasic

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MORE MCQ ON Chemistry

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