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Chemistry

Chemistry
Ultraviolet rays can be used in water treatment as

Hydrolyser
Disinfectant
Flocculator
Precipitator

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Chemistry
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength

O2
O+2
O-22
O-2

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Chemistry
The major harmful gas emitted by automobile vehicle which causes air pollution is

Methane
Ozone gas
Carbon Monoxide
Carbon dioxide

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Chemistry
Iron is extracted from

Dolomite
Haematite
Cinnabar
Bauxite

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Chemistry
The strongest oxidizing agent among the following is:

Oxygen
Fluorine
Iodine
Chlorine

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Chemistry
Which of the following causes the rusting of iron? a. Oxidation b. Reduction c. Chemical reaction with oxygend. Chemical reaction with CO2

A and b
C and d
A and c
B and c

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