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Chemistry

Chemistry
Among the following the hardest metal is

Platinum
Tungsten
Gold
Iron

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Chemistry
The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:

Hydroxy phenyl alanine
Dihydroxy phenyl alanine
Phenyl alanine
Amino phenyl alanine

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Chemistry
Forth floatation process to concentrate the minerals is applicable to

Calamine
Haematite
Bauxite
Chalcopyrites

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Chemistry
Formation of ozone hole is maximum over

Africa
Europe
India
Antarctica

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Chemistry
Nitrogen in water is commonly found in the form of

Nitrous oxide
Nitric oxide
Nitrite
Nitrate

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Chemistry
Two elements which can form a large number of compounds are

Carbon and Sulphur
Carbon and Nitrogen
Carbon and Hydrogen
Carbon and Oxygen

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MORE MCQ ON Chemistry

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