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Chemistry

Chemistry
The enzyme that converts glucose to ethyl alcohol is :

Zymase
Maltase
Diastase
Invertase

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Chemistry
Which of the following is used in making smoke bombs?

Phosphorus
Carbon
Hydrogen
Sulphur

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Chemistry
If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is :

K 1 = 1 /K2
K1 = K2/2
K1 = 2K2
K1 = K2

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Chemistry
Which among the following is a carbohydrate ?

Cane-sugar
Turpentine
Nylon
Hydrogen peroxide

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Chemistry
Helium gas is used in gas balloons instead of hydrogen gas because it is

More abundant than hydrogen
More stable
Non-combustible
Lighter than hydrogen

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Chemistry
Ozone depletion in the atmosphere is mainly caused by

Chlorofluorocarbon
Nitrogen dioxide
Hydrogen sulphide
Sulphur dioxide

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