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Chemistry

Chemistry
The element with highest ionization potential is

Helium
Boron
Oxygen
Carbon

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Chemistry
Cinnabar is an ore/mineral of

Molybdenum
Manganese
Mercury
Lead

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Chemistry
The most abundant element by number in the living system is :

Nitrogen
Hydrogen
Oxygen
Carbon

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Chemistry
Curd is sour due to presenceof

Acetic acid
Lactic acid
Oxalic acid
Tartaric acid

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Chemistry
The chemical bahaviour of an atom depends upon

The number of neutrons in the nucleus
The number of nucleons in the nucleus
The number of protons in its nucleus
The number of electrons orbiting around the nucleus

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Chemistry
The most abundant element in the earth’s atmosphere is

Argon
Nitrogen
Krypton
Oxygen

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MORE MCQ ON Chemistry

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