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Chemistry

Chemistry
Catalytic converters are generally made from :

Transition metals
Carbon
Hydrogen
Alkaline metals

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Chemistry
Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful

Solar ultraviolet radiation
Solar infrared radiation
SO2 in the air
CO2 in the air

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Chemistry
Conduction band electrons have more mobility than holes because they

Are lighter
Experience collision less frequently
Need less energy to move them
Have negative charge

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Chemistry
Bhopal gas tragedy is associated with leakage of

Sulphur dioxide
Nitrogen dioxide
Carbon dioxide
Methyl isocyanate

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Chemistry
Aqueous solution of which of the following is a good conductor of electricity

Glucose
Ammonia
Ammonium acetate
Acetic acid

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Chemistry
Diamond is lustrous because

It is colourless
It is hard
It is pure
Its refractive index is high

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