(A) Sodium Carbonate
(B) Calcium Carbonate
(C) Sodium Bicarbonate
(D) Calcium Bicarbonate
The answer is: (A) Sodium Carbonate
Electric Bulb Filament is made of
(A) Copper
(B) Aluminium
(C) Lead
(D) Tungsten
The answer is: (D) Tungsten
Balloons are filled with
(A) Helium
(B) Oxygen
(C) Argon
(D) None of these
The answer is: (A) Helium
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