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Chemistry

Chemistry
Depletion of ozone layer causes

Breast cancer
Skin cancer
Lung cancer
Blood cancer

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Chemistry
Periodic table contains how many periods

6
7
10
8

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Chemistry
The gas that usually causes explosions in coal mines is

Methane
Hydrogen
Carbon monoxide
Air

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Chemistry
Baryllium Sulphate is less soluble in water due to

Low Energy of dissociation
High inflammable energy
Lonic band
Low inflammable energy

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Chemistry
Which one of the following is found in kidney stones?

Sodium oxalate
Calcium oxalate
Sodium chloride
Calcium acetate

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Chemistry
Nucleus of an atom consists of.

Proton and Neutron
Electron, Proton and Neutron
Neutron
Proton

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