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Chemistry

Chemistry
1 carat of diamond is equal to

200 mg
100 g
200 g
100 mg

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Chemistry
Sulphur dioxide level in the atmosphere can be reduced by using

More efficient car engines
Low - sulphur fuels
Catalytic converters in industry
Static electricity to attract it in factory chimneys

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Chemistry
Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has

Stable half filled 2p sub level
High nuclear charge
Smaller atomic radius
High bond dissociation energy

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Chemistry
Which of the following vegetable oils does not contain essential fatty acids ?

Coconut oil
Sunflower oil
Mustard oil
Groundnut oil

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Chemistry
Which acid is used in Lead storage battery?

Sulphuric acid
Hydrochloric acid
Nitric acid
Acetic acid

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

Evapotranspiration
Aquatic macrophytes
Auatic fungi
Effluents

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