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Chemistry

Chemistry
Which one of the following is most electronegative

Tin
Carbon
Silicon
Lead

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

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

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Chemistry
Lead pencil contains

Graphite
Lead
Lead sulphide
Ferrous sulphide

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Chemistry
The weight of 6.023 × 1022 atoms of carbon is

1.2 gms
0.12 gms
12 gms
120 gms

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Chemistry
The mass number of an atom is equal to

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

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Chemistry
The gas produced in marshy places due to decomposition of vegetation is

Carbon monoxide
Carbon dioxide
Methane
Sulphur dioxide

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MORE MCQ ON Chemistry

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