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Chemistry

Chemistry
What is the atomic number of mercury

32
80
41
63

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Chemistry
The name of unreactive gas is

Nitrogen
Oxygen
Carbon dioxide
Hydrogen

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Chemistry
The non-metal found in the liquid state is

Bromine
Nitrogen
Fluorine
Chlorine

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Chemistry
The metal present in vitamin B12 is

Mg
Fe
Co
Mo

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Chemistry
Which of the following has least negative electron gain enthalpy

Cl
S
P
F

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Chemistry
The gas which emits from rice field is

Ethane
Methane
Nitrogen
All of these

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