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Chemistry

Chemistry
Isobars are lines joining places having equal

Pressure
Rainfall
Height above sea-level
Population

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Chemistry
The hydronium ion is

HO -
H2+
H+
H3O+

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Chemistry
Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ?

Nickel and cadmium
Iron and cadmium
Lead peroxide and lead
Zinc and carbon

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Chemistry
Phosphorus is kept in water because

Its ignition temperature is very high
Its ignition temperature is very low
Its critical temperature is high
Its critical temperature is low

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Chemistry
Bleaching powder is used in drinking water as a/an

Disinfectant
Antiseptic
Antibiotic
Coagulant

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Chemistry
The degree of dissociation of an electrolyte depends on

Method of dissolution
Atmospheric pressure
Impurities
Dilution

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MORE MCQ ON Chemistry

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