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Chemistry

Chemistry
Brass is a solution of molten copper in

Gaseous zinc
Solid zinc
Molten tin
Molten zinc

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Chemistry
Which one is the most reactive gaseous element

Bromine
Chlorine
Iodine
Flourine

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Chemistry
Which one of the following is a greenhouse gas ?

Nitrogen
Sulphur dioxide
Helium
Carbon dioxide

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Chemistry
The hydronium ion is

H2+
HO -
H+
H3O+

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Chemistry
Petroleum is a mixture of

Polymers
Elements
Hydrocarbons
Salts

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Chemistry
A subshell with l=2 can take up

5 electron
8 electron
10 electron
3 electron

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MORE MCQ ON Chemistry

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