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Chemistry

Chemistry
Which of the inert gases can form compounds?

Argon
Xenon
Helium
Krypton

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Chemistry
Electric fuse is an alloy of

Carbon and tin
Zinc and lead
Copper and iron
Tin and lead

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Chemistry
Atoms of same element having different mass numbers are called________

Isomers
Isobars
Isotopes
Isotones

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Chemistry
Which one of the following elements is least likely to be found in commercial fertilisers?

Phosphorous
Nitrogen
Potassium
Silicon

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Chemistry
The main source of carbon monoxide is

Transportation
Fuel combustion
Solid waste disposal
Industrial process

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Chemistry
The hydronium ion is

HO -
H2+
H3O+
H+

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