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Chemistry

Chemistry
Which is not a green house gas ?

CH4
CO2
N2O
Chlorofluorocarbons

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Chemistry
The important ore of aluminium is

Cryolite
Bauxite
Fluorspar
Haematite

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Chemistry
Chemical properties of isotopes

Need not be same
Need not be different
Must be same
Must be different

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Chemistry
The addition of gypsum to portland cement helps in :

Preventing rapid setting of cement
Rapid setting of cement
Increasing the strength of cement
Reduction in the cost of cement

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Chemistry
Haloarenes are more stable than haloalkanes due to

Resonance effect
Inductive effect
All of them
Hyper conjugative effect

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Chemistry
Magnetite is

Fe2O3
Fe3O4
FeCO3
2Fe2O3. 3H2O

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MORE MCQ ON Chemistry

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