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Chemistry

Chemistry
The common refrigerant in domestic refrigerator is

Freon
Neon
Nitrogen
Oxygen

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Chemistry
Domestic cooking gas consists mostly of

Ethylene and carbon monoxide
Liquified butane and isobutane
Methane and ethane
Hydrogen and acetylene

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Chemistry
Brass is made of

Copper, tin and zinc
Copper and tin
Tin and lead
Copper and zinc

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Chemistry
The luster of a metal is due to

presence of free electrons
its high density
its high polishing
its chemical inertness

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Chemistry
KMnO4 can be used as

Fertilizer
Disinfectant
Insecticide
Pesticide

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Chemistry
What is the mass percentage of carbon in carbon dioxide (CO2)

0.273
0.158
0.201
0.323

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MORE MCQ ON Chemistry

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