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Chemistry

Chemistry
Lead pencil contains

Lead sulphide
Lead
Ferrous sulphide
Graphite

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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
Sodium Chloride (NaCl)
Dry Ice (Frozen CO2)

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Chemistry
The orientation of an atomic orbital is governed by

Azimuthal quantum number
Magnetic quantum number
Principal quantum number
Spin quantum number

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Chemistry
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

4.05 gram
5.05 gram
3.05 gram
2.05 gram

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Chemistry
The heaviest naturally occurring element is:

Mercury
Polonium
Uranium
Thorium

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Chemistry
If water smells bad, then that odour can be removed by adding

Deactivated nitrogen
Bleach
Activated carbon
Alum

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MORE MCQ ON Chemistry

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