Question is ⇒ The condition of a fully charged lead acid battery cannot be ascertained by, Options are ⇒ (A) gassing., (B) voltage., (C) colour of the electrodes., (D) specific gravity of the electrolyte., (E) colour of the electrolyte., Leave your comments or Download question paper.

Question is ⇒ The condition of a fully charged lead acid battery cannot be ascertained by, Options are ⇒ (A) gassing., (B) voltage., (C) colour of the electrodes., (D) specific gravity of the electrolyte., (E) colour of the electrolyte., Leave your comments or Download question paper. Previous question Next question


Q1.	The condition of a fully charged lead acid battery cannot be ascertained by
A.	gassing. [Wrong Answer]
B.	voltage. [Wrong Answer]
C.	colour of the electrodes. [Wrong Answer]
D.	specific gravity of the electrolyte. [Wrong Answer]
E.	colour of the electrolyte. [Correct Answer]
View Answer 14 -8 Explanation:- Answer : E 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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⇒ The electric cell is a device to obtain
Electrons
Electric charge
Electric energy from chemical energy
Electric force

⇒ 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.

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

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

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

⇒ Capacity of a dry cell is
more when it supplies current continuously.
more when it supplies current intermittently.
not affected by the type of discharge.
none of the above.

⇒ During electroplating the weight of a substance deposited depends upon
shape of the article
quantity of electricity
room temperature
all of the above

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

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

⇒ 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.

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

⇒ 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

⇒ 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.

⇒ What carries current in an electrolyte
Electrons only
- ve ions only
+ ve ions only
Both + ve and - ve ions

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

⇒ 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 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 a lead acid battery, excessive formation of lead sulphate occurs due to
idleness of battery for a long time.
low level of electrolyte.
persistent undercharging.
all of the above.

⇒ 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.

⇒ Which of the following is not the name of a secondary cell ?
Acid cell
Alkali cell
Fuel cell
Storage cell

⇒ 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.

⇒ Overcharging of a lead acid battery would cause
excessive gassing.
loss of active material.
increase in temperature resulting in buckling of plates.
all of the above.

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

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

⇒ In a lead acid battery, the level of the electrolyte should be
equal to that of the plates.
below the level of plates.
above the level of plates.
none of the above.

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

⇒ Which of the following statements is correct about lead acid batteries ?
It delivers current as soon as its components are put together.
Density of electrolyte increases while delivering current
lt does not deliver current on putting its components together until it is supplied electrical energy from an external source
It has lead as positive plates.

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