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Chemistry

Chemistry
Philosopher’s Wool is

Zinc oxide
Zinc sulphate
Zinc carbonate
Zinc blende

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Chemistry
Depletion of ozone layer causes

Blood cancer
Lung cancer
Breast cancer
Skin cancer

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Chemistry
Catalyst is a substance which

Increases the rate of the reaction
Decreases the rate of reaction
None of these
Has no action on the rate of the reaction

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Chemistry
Nucleus of an atom consists of.

Electron, Proton and Neutron
Proton
Proton and Neutron
Neutron

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Chemistry
The most abundant constituent of atmospheric air is :

Nitrogen
Hydrogen
Carbon
Oxygen

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Chemistry
The gas involved in Bhopal incident was

Nitrogen dioxide
Hydrogen sulphide
Methyl isocyanide
Methyl chloride

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