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Chemistry

Chemistry
The metal present in vitamin B12 is

Mo
Fe
Co
Mg

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Chemistry
Formation of ozone hole is maximum over

India
Antarctica
Europe
Africa

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Chemistry
Ozone consists of

Hydrogen and Carbon
Oxygen only
Oxygen and Carbon
Oxygen and Nitrogen

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Chemistry
The material used in solar cells contains

Silicon
Tin
Caesium
Thallium

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Chemistry
Which one of the following is used as preservative for foodstuff ?

Glycerine
Sodium Benzoate
Sodium Chloride
Picric acid

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Chemistry
The 'solid waste' is also known as

Scrubber
Toxic waste
Sedge
Sludge

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MORE MCQ ON Chemistry

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