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Chemistry

Chemistry
The number of electrons presents in H+ is

one
three
two
zero

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Chemistry
The major constituent of gobar gas is

Isobutane
Carbon dioxide
Methane
Butane

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Chemistry
Which one of the following is a micro-element ?

Nitrogen
Hydrogen
Oxygen
Chlorine

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Chemistry
The noble gas used in radiotherapy is

Radon
Argon
Xenon
Neon

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Chemistry
The method that cannot be used for removing permanent hardness of water is

distillation
adding caustic soda
adding sodium carbonate
boiling

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Chemistry
Aerated water contains

CO2
H2
SO2
NO2

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