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Chemistry

Chemistry
'Plaster of Paris' is made by partial dehydration of

Green vitriol
Epsom salt
Blue vitriol
Gypsum salt

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Chemistry
The nucleus of a hydrogen atom consists of

1 proton only
1 proton + 2 neutron
1 electron only
1 neutron only

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Chemistry
Which of the following has no unit

Ionization energy
Electron affinity
Excitation potential
Electronegativity

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Chemistry
Which acid is used in Lead storage battery?

Nitric acid
Hydrochloric acid
Sulphuric acid
Acetic acid

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Chemistry
The mass number of an atom is equal to

the number of protons and electrons
the number of protons
the number of neutrons
the number of nucleons

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Chemistry
The working of a dry cell is based on

Electrolysis
Decomposition reaction
Spontaneous oxidation-reduction reaction
Combination reaction

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