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Chemistry

Chemistry
In addition to hydrogen, the other abundant element present on Sun’s surface is

Oxygen
Argon
Helium
Neon

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Chemistry
The anode in a dry cell consists of

Graphite
Zinc
Copper
Cadmium

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Chemistry
Organic compounds are

Ionic compounds
Covalent compounds
Interstitial compounds
Co-ordination compounds

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Chemistry
Commercial nitric acid is coloured because it contains dissolved :

Coloured impurities
Oxygen
Nitrogen dioxide
Nitrous oxide

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Chemistry
In upper layer of atmosphere ozone is formed by

The combination of oxygen molecules
The action of ultraviolet rays on oxygen
The action of nitrogen on oxygen in atmosphere
Subjecting oxygen to high pressure

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Chemistry
Baking soda is :

Potassium carbonate
Sodium hydroxide
Sodium bicarbonate
Sodium carbonate

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