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Chemistry

Chemistry
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength

O+2
O2
O-22
O-2

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Chemistry
Find the odd one:

Chalk
Marble
Slaked lime
Limestone

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Chemistry
Which of the following contains high content of lead?

High octane fuel
Low octane fuel
Coal
Cooking gas

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Chemistry
A powerful eye irritant present in smog is

Sulphur dioxide
Carbon dioxide
Nitric oxide
Peroxyacetyl nitrate

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Chemistry
Substance used as an anti freeze in radiators of automobiles is :

Ethyl alcohol
Methyl alcohol and H2O
Methyl alcohol
Ethyl alcohol and H2O

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Chemistry
Which one of the following is not a ‘green house gas’ ?

Methane
Chlorofluorocarbons
Carbon dioxide
Nitrogen

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