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Chemistry

Chemistry
The hydronium ion is

HO -
H2+
H3O+
H+

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Chemistry
The inherited traits of an organism are controlled by

enzymes
DNA molecules
nucleotides
RNA molecules

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Chemistry
The gas involved in Bhopal incident was

Nitrogen dioxide
Hydrogen sulphide
Methyl isocyanide
Methyl chloride

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Chemistry
Main source of lead pollution is from

Sewage
Insecticides
Leaded gasoline
Tobacco

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Chemistry
When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to

N2O
SO3
SO2
NO2

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Chemistry
The common name for the compound having formal NaOH is

Soda ash
Caustic potash
Caustic soda
Sodium hydroxide

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MORE MCQ ON Chemistry

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