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Chemistry

Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Nitrogen
Helium
Hydrogen
Argon

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Chemistry
Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?

Chlorofluorocarbon
Sulphur dioxide
Carbon dioxide
Nitrous oxide

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Chemistry
The Fungus which is used in the alcohol industry is

Mushroom
Candida Aibicans
Rhizopus
Yeast

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Chemistry
Which metal does not undergo corrosion due to the formation of oxide layer?

Copper
Aluminium
Zinc
Iron

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Evapotranspiration
Auatic fungi
Aquatic macrophytes
Effluents

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Chemistry
When there are two electrons in the same orbital, they have:

Same spin
Opposite spin
No spin
Same or opposite spin

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