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Chemistry

Chemistry
The fiber least prone to catch fire is

Terylene
Nylon
Cotton
Polyester

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Chemistry
The inherited traits of an organism are controlled by

nucleotides
RNA molecules
DNA molecules
enzymes

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Chemistry
For a spontaneous chemical process, the free energy change is

Zero
Negative
Depends on whether the reaction is exothermic or endothermic
Positive

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Chemistry
What are the major pollutants of cigarette smoke?

Dioxin and benzene
Carbon monoxide and nicotine
Carbon monoxide and benzene
Carbon monoxide and dioxin

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Chemistry
Higher concentration of nitrogen dioxide in atmosphere air causes

Bronchitis
Asphyxiation
Cancer
Corrosion

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Chemistry
Combustion of a candle is a/an

Photochemical reaction
Endothermic reaction
Exothermic reaction
Physical change

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MORE MCQ ON Chemistry

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