Question is ⇒ What happens during the charging of acid cell ?, Options are ⇒ (A) Voltage increases, (B) Energy is given out, (C) Both, (D) None of these, (E) , Leave your comments or Download question paper.

Question is ⇒ What happens during the charging of acid cell ?, Options are ⇒ (A) Voltage increases, (B) Energy is given out, (C) Both, (D) None of these, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	What happens during the charging of acid cell ?
A.	Voltage increases [Correct Answer]
B.	Energy is given out [Wrong Answer]
C.	Both [Wrong Answer]
D.	None of these [Wrong Answer]
View Answer 6 -1 Explanation:- Answer : A 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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⇒ Internal resistance of primary cell varies
inversely with the distance between electrodes.
inversely with the surface area of electrodes.
directly with the distance between electrodes
with the nature of electrodes.

⇒ 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).

⇒ Short circuiting of a cell results in
reduced gassing during charging.
abnormal high temperature.
low specific gravity of the electrolyte.
all of the above.

⇒ 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.

⇒ The current capacity of a cell is measured in
A
Ah
W
Wh

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

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

⇒ What happens during the discharging of Edison cell ?
Relative density of electrolyte decreases
The emf does not change
The emf decreases
Relative density increases

⇒ During discharging of lead acid cells, the terminal voltage decreases with the decrease in
temperature.
discharge rate.
state of charge.
none of these.

⇒ 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

⇒ 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

⇒ Which of the following tests is performed for ascertaining whether the battery plates are defective or not?
Specific gravity test.
High discharge test.
Cadmium test.
None of the above.

⇒ Standard cell
will have precise and accurate constant voltage when current drawn from it is few microamperes only.
will have precise and accurate constant voltage when few milliamperes are drawn from it.
will continue to have constant voltage irrespective of loading conditions.
can supply voltages up to 10 V.

⇒ The relative density of the electrolyte of acid accumulator should not be allowed to fall below
1.80
1.50
1.28
1.18

⇒ Five cells are connected in series in a row and then four such rows are connected in parallel to feed the current to a resistive load of 1.25 ω. Each cell has an emf of 1.5 V with an internal resistance of 0.2 ω. The current through the load will be
3.33 A
23.33 A
5 A
1 A

⇒ The condition of a fully charged lead acid battery cannot be ascertained by
gassing.
voltage.
colour of the electrodes.
specific gravity of the electrolyte.

⇒ Which of the following cells is more likely to be damaged due to short circuiting ?
Daniel cell
Dry Cell
Acid cell
Fuel cell

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

⇒ For a group of cells when internal resistance of the group is equal to external load resistance, the group will deliver maximum
voltage.
current.
ampere-hours.
efficiency.

⇒ In a lead acid battery, separators are provided to
reduce internal resistance.
facilitate flow of the current.
avoid internal short circuits.
increase the energy efficiency.

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

⇒ 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

⇒ Which of the following statements is incorrect about lead acid batteries ?
The electrolyte in weak sulphuric acid.
When fully charged both of the plates become lead-per-oxide.
The number of plates is always odd.
The number of negative plates is one more than the number of positive plates.

⇒ 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.

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

⇒ During electrodeposition. the amounts of different substances liberated by same quantity of electricity are proportional to
atomic weights.
valency.
chemical equivalents.
atomic numbers

⇒ The arrangement of 12 cells, each of internal resistance 1.5 ω, to give maximum current in external load resistance of 2 ω will be
all 12 cells in series.
all 12 cells in parallel.
4 cells in series with 3 rows in parallel.
3 cells in series with 4 rows in parallel.

⇒ Who was the first to design storage cell ?
Plante
Galvani
Edison
Volta

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

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apply petroleum jelly.
charge the battery at frequent intervals.