Question is ⇒ What carries current in an electrolyte, Options are ⇒ (A) Electrons only, (B) - ve ions only, (C) + ve ions only, (D) Both + ve and - ve ions, (E) , Leave your comments or Download question paper.

Question is ⇒ What carries current in an electrolyte, Options are ⇒ (A) Electrons only, (B) - ve ions only, (C) + ve ions only, (D) Both + ve and - ve ions, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	What carries current in an electrolyte
A.	Electrons only [Wrong Answer]
B.	- ve ions only [Wrong Answer]
C.	+ ve ions only [Wrong Answer]
D.	Both + ve and - ve ions [Correct Answer]
View Answer 4 -1 Explanation:- Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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⇒ Whithin the electric cell, the charge is transported by
Free electrons
Only positive ions
Only negative ions
Both positive and negative ions

⇒ During charging and discharging of an Edison cell
electrolyte does not take part in chemical reaction.
emf remains the same.
corrosive fumes are produced.
nickel hydroxide remains unsplit.

⇒ Through an electrolyte an electric current is due to drift of
Free electrons
Positive and negative ions
Free electrons and holes
Protons

⇒ Sulphated cells are indicated by the
low specific gravity.
low voltage on discharge.
low capacity.
all of the above.

⇒ In lead acid batteries, sedimentation occurs due to
idleness foralongeiperiod.
overcharging at slow rate.
overcharging at high rate
slow charging at low rate.

⇒ The capacity of a lead acid battery is adversely affected by increase in
discharge rate.
charge rate.
temperature.
specific gravity of the electrolyte.

⇒ Vent plug is provided in each lead acid cell to
pour water or electrolyte when needed.
check the electrolyte level.
allow escape out of gases during charging.
all of the above.

⇒ Battery charging equipment should be installed
in well ventilated, clean and dry place.
as near as practical to the battery under charge.
both (a) and (b).
wherever convenient.

⇒ Charging of a sulphated battery at high rate causes
warping of plates.
boiling of electrolyte owing to gassing.
damage to separators, cell caps, covers and battery case due to excessive temperature.
all of the above.

⇒ Cells are connected in parallel in order to increase the
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efficiency.
current capacity.
voltage rating.

⇒ Who was the first to design storage cell ?
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Galvani
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⇒ Overcharging of a lead acid battery would cause
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all of the above.

⇒ For achieving uniform thickness of deposit on irregular surface
anode and cathode are kept farther apart
anode and cathode are kept closer.
high current densities are used.
electrolyte is agitated constantly

⇒ Pickling is
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a layer coating for preventing surface deterioration.
removal of scale, grease etc. from the surface.
none of the above.

⇒ Common impurity in a battery electrolyte is
dust particles.
iron.
lead crystals.
sodium chloride.

⇒ The emf of a lead battery
increases with the increase in specific gravity of the electrolyte.
slightly increases with the increase in temperature.
decreases with the increase in temperature.
both (a) and (b).

⇒ The capacity of a lead acid battery does not depend upon
charge rate.
discharge rate.
temperature.
density of electrolyte & quantity of active material.

⇒ Which of the following is not the name of a secondary cell ?
Acid cell
Alkali cell
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⇒ If the specific gravity of the electrolyte in a lead acid cell increases beyond 1.23 there will be
loss of life.
loss of capacity.
increase in internal resistance.
corrosion of the grids of the plate.

⇒ A battery is connected to a resistance causing a current of 0.5 A in the circuit. The current drops to 0.4 A when an additional resistance of 5 ω is connected in series. The current will drop to 0.2 A when the resistance is further increased by
10 ω
15 ω
25 ω
40 ω

⇒ The energy capacity of a storage battery is rated in
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kW.
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joules.

⇒ The electric cell is a device to obtain
Electrons
Electric charge
Electric energy from chemical energy
Electric force

⇒ The emf of primary cell depends upon the
physical dimensions of a cell.
nature of electrolyte.
nature of electrode.
both (b) and (c).

⇒ In a lead acid battery, fillers are provided to
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prevent flow of gasses.
recover acid losses through vapours.
reduce tendency for polarisation.

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Albumen.
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⇒ Oil and grease can be removed from a surface with the help of
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hot alkaline solutions.
solvents such as gasoline or carbon tetrachioride.
any of the above.

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facilitate flow of the current.
avoid internal short circuits.
increase the energy efficiency.

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keep electrolyte level low
apply petroleum jelly.
charge the battery at frequent intervals.

⇒ A 24 V battery of internal resistance r = 4 ω connected to a variable resistance R. The rate of heat dissipation in the resistor is maximum when the current drawn from the battery is I. The current drawn from the battery will be 1/2 when R is equal to
8 ω
12 ω
16 ω
20 ω

⇒ The amount of ions liberated by 96500 C of charge passed through the electrolyte is called ?
Electrochemical equivalent
Chemical equivalent
Gram equivalent
None of these