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Chemistry

Chemistry
Silk fibre chemically is :

Carbohydrate
Fat
Protein
Cellulose

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Chemistry
Ozone depletion in the atmosphere is mainly caused by

Sulphur dioxide
Nitrogen dioxide
Chlorofluorocarbon
Hydrogen sulphide

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Chemistry
Cooking gas is a mixture of

Butane and propane
Methane and ethylene
Carbon dioxide and oxygen
Carbon monoxide and carbon dioxide

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Chemistry
The enzyme that converts glucose to ethyl alcohol is :

Invertase
Zymase
Diastase
Maltase

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Chemistry
One carat of diamond is equal to

250 mg
100 mg
200 mg
150 mg

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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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MORE MCQ ON Chemistry

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