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Chemistry

Chemistry
The enzyme that converts glucose to ethyl alcohol is :

Invertase
Diastase
Zymase
Maltase

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Chemistry
The highest volume of gases in lower atmosphere is comprised of

Nitrogen
Oxygen
Carbon dioxide
Hydrogen

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Chemistry
The value of gas constant R in Ergs deg–1 mole–1 is

8.341 × 107
4.183 × 107
8.413 × 107
8.314 × 107

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Chemistry
Which method will be employed to test the hardness of water?

None of these
Boiling
Formation of lather with soap
Distillation

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Chemistry
The chemical name of quartz is

Sodium silicate
Calcium phosphate
Calcium oxide
Sodium phosphate

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Chemistry
Total number of elements in the Periodic table

127
118
112
115

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MORE MCQ ON Chemistry

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