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Chemistry

Chemistry
Tear gas used by the police to disperse the mob contains

Chlorine
Hydrogen sulphide
Ammonia
Carbon dioxide

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Chemistry
The most commonly used chemicals in the artificial rainmaking or cloud seeding are

Silver Iodide (Ag I)
All of these
Dry Ice (Frozen CO2)
Sodium Chloride (NaCl)

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Chemistry
The chief constituent of vinegar is

Acetic acid
Salycylic acid
Formic acid
Oxalic acid

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Chemistry
The mass number of an atom is equal to

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

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Chemistry
Helium gas is filled in ballons because

It is a noble gas
Its atomic number is 2
It is lighter than air
It is one of the constitutents of water

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Chemistry
Oxygen has (+) oxidation number only in

N2O
C12O
OF2
H2O (2)

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MORE MCQ ON Chemistry

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