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Chemistry

Chemistry
What is the principal ore of aluminium ?

Lignite
Copper
Bauxite
Dolomite

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Chemistry
The Bhopal tragedy was caused by the gas

Chlorine
Methyl isocyanate
Phosgene
Carbon monoxide

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

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

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Chemistry
Copper substances when exposed to air gains a green coating due to the formation of:

Cu(NO3)2
CuSO4
CuO
CuCO3 Cu(OH)2

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Chemistry
In which of the following ions , the colour is not due to d-d transition ?

[Ti(H2O)6]3+
[CoF6]3+
[CrO4]2−
[Cu(NH3)4]2+

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Chemistry
In drinking water supply, which of the following treatments is not involved

Coagulation
Sedimentation
Disinfection
Softening

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MORE MCQ ON Chemistry

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