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Chemistry

Chemistry
Formation of ozone hole is maximum over

Europe
Antarctica
India
Africa

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Chemistry
The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

7.2 x
5x/36
x/6
5x

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Chemistry
The material known in commerce as Terylene is a

Synthetic fibre
Natural fibre
Blend of cotton and silk
Modified natural fibre

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Chemistry
Carborundum is another name of

Silicon carbide
Silicon oxide
Calcium carbide
Calcium oxide

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Chemistry
Gas released during Bhopal tragedy was :

Sodium isothiocyanate
Methyl isothiocyanate
Potassium isothiocyanate
Ethyl isothiocyanate

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Chemistry
Which one of the following is not a ‘green house gas’ ?

Methane
Nitrogen
Chlorofluorocarbons
Carbon dioxide

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MORE MCQ ON Chemistry

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