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Chemistry

Chemistry
Cinnabar is an ore/mineral of

Mercury
Molybdenum
Manganese
Lead

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Chemistry
Which of the following has no unit

Excitation potential
Electronegativity
Ionization energy
Electron affinity

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Chemistry
The most common cause of pollution of air is

Smoke
Carbon dioxide
Sulphur dioxide
Carbon monoxide

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Chemistry
White phosphorus is always kept under

Kerosene
Water
Ether
Benzene

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Chemistry
The hydronium ion is

H2+
H3O+
HO -
H+

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Chemistry
The fundamental particles present in the nucleus of an atom are

Proton, neutron
Neutron, positron
Electron, proton
Neutron, electron

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