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Chemistry

Chemistry
Of the following commonly used materials, the one that is not an alloy is

Bronze
Steel
Copper
Brass

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Chemistry
The quality of petrol is expressed in terms of

Octane number
Cetane number
Added unlead compounds
Gold number

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Chemistry
The main constituent of biogas is

Oxygen
Acetic acid
Methyl alcohol
Methane

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Chemistry
Ultraviolet rays can be used in water treatment as

Disinfectant
Flocculator
Hydrolyser
Precipitator

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Chemistry
High concentration hydrocarbon pollutants in atmospheric air causes

Silicosis
Respiratory diseases (e.g.asthma)
Cancer
Reduced crop yield

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Chemistry
An emulsion is a colloidal solution of

Solid in liquid
Solid in Solid
Gas in solid
Liquid in liquid

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MORE MCQ ON Chemistry

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