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Chemistry

Chemistry
The hydronium ion is

H2+
H3O+
HO -
H+

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Chemistry
The gas which is mainly responsible for the green house effect is:

Carbon dioxide
Ozone
Carbon monoxide
Oxygen

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Chemistry
Type metal used in printing press is an alloy of

Lead and bismuth
Lead and antimony
Lead and zinc
Lead and copper

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Chemistry
Brass is a solution of molten copper in

Gaseous zinc
Solid zinc
Molten zinc
Molten tin

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Chemistry
Which is known as carbolic acid?

Acetic acid
Oxalic acid
Ethanol
Phenol

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Chemistry
Which gas is used for converting vegetable oils into saturated fats ?

SO2
O2
H2
Cl2

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MORE MCQ ON Chemistry

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