In an electrolytic cell current flows ?
A. From cathode to anode in outer circuit
B. From anode to cathode outside the cell
C. From cathode to anode inside the cell
D. both B & C
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Chemistry
Which has maximum oxidation number
A. N
B. Cr
C. S
D. Mn
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If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ?
A. H2 is deposited at cathode
B. Colour of the solution becomes fade
C. Cu is deposited at anode
D. All are possible
The relative lowering of vapour pressure is directly proportional to molality if the solution is
A. concentrated
B. dilute
C. saturated solution
D. all of the above
ppm means
A. parts of solute in 1000 parts of solvent
B. parts of solvent in 1000 parts of solute
C. parts of solute in one million parts of solution
D. parts of solvent in one million parts of solute
Hydration is a process in which
A. Molecules are surrounded by solvent molecules
B. Ions are surrounded by solvent molecules
C. Both ions and molecules are surrounded by solvent molecules
D. Both ions and molecules are surrounded by water molecules
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Beckmanns apparatus is used to measure
A. boiling point elevation
B. depression in freezing point
C. lowering of vapour pressure
D. lowering of osmotic pressure
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The determination of correct molecular weight from Raoults law is applicable to
A. a volatile solute in dilute solution
B. a non-electrolyte & non volatile solute in concentrated solution
C. a non-electrolyte & non volatile solute in concentrated solute
D. non volatile solute in a dilute solution
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Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called
A. saturated solution
B. solubility
C. unsaturated solution
D. super saturated solution
The solution which distils over with change in composition
A. ideal solution
B. zeotropic solution
C. azeotropic solution
D. non-ideal solution
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