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Chemistry

Chemistry
An example of major air pollutant is

Carbon dioxide
Helium
Carbon monoxide
Oxygen

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Chemistry
The sewage obtained from water closets and urinals is known as

Garbage
Sullage
Sanitary waste
Industrial waste

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Chemistry
Lead pencil contains

Lead sulphide
Graphite
Lead
Ferrous sulphide

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Chemistry
Among the following iron ores, the highest percentage of iron content is found in–

Haemetite
Limnonite
None of these
Magnetite

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Chemistry
Adding Cl2 to benzene in the presence of AlCl3 is an example of :

Substitution reaction
None of the options
Elimination reaction
Addition reaction

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Chemistry
An electric iron has a heating element made of :

Zinc
Copper
Tungsten
Nichrome

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MORE MCQ ON Chemistry

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