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Electrolysis and storage of batteries
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q41 ⇒ Charging of a sulphated battery at high rate causes all of the above. [other wrong options] [Discuss in forum] warping of plates. boiling of electrolyte owing to gassing. damage to separators, cell caps, covers and battery case due to excessive temperature. |
Q42 ⇒ The energy capacity of a storage battery is rated in ampere hours. [other wrong options] [Discuss in forum] kWh. kW. joules. |
Q43 ⇒ For a group of cells when internal resistance of the group is equal
to external load resistance, the group will deliver maximum current. [other wrong options] [Discuss in forum] voltage. ampere-hours. efficiency. |
Q44 ⇒ Addition of which of the following substances in electrolyte
promotes smooth deposition? Any of these. [other wrong options] [Discuss in forum] Albumen. Glucose. Phenol. |
Q45 ⇒ In a lead acid battery, fillers are provided to facilitate flow of gasses [other wrong options] [Discuss in forum] prevent flow of gasses. recover acid losses through vapours. reduce tendency for polarisation. |
Q46 ⇒ Short circuiting of a cell results in all of the above. [other wrong options] [Discuss in forum] reduced gassing during charging. abnormal high temperature. low specific gravity of the electrolyte. |
Q47 ⇒ The capacity of a lead acid battery is adversely affected by increase
in discharge rate. [other wrong options] [Discuss in forum] charge rate. temperature. specific gravity of the electrolyte. |
Q48 ⇒ 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 4 cells in series with 3 rows in parallel. [other wrong options] [Discuss in forum] all 12 cells in series. all 12 cells in parallel. 3 cells in series with 4 rows in parallel. |
Q49 ⇒ Which of the following substances on adding in electrolyte helps
in producing bright finish? Any of these. [other wrong options] [Discuss in forum] Glycerine. Dextrol. Phenol. |
Q50 ⇒ Which of the following tests is performed for ascertaining whether
the battery plates are defective or not? Cadmium test. [other wrong options] [Discuss in forum] Specific gravity test. High discharge test. None of the above. |
Q51 ⇒ Overcharging of a lead acid battery would cause all of the above. [other wrong options] [Discuss in forum] excessive gassing. loss of active material. increase in temperature resulting in buckling of plates. |
Q52 ⇒ During charging and discharging of an Edison cell electrolyte does not take part in chemical reaction. [other wrong options] [Discuss in forum] emf remains the same. corrosive fumes are produced. nickel hydroxide remains unsplit. |
Q53 ⇒ Through an electrolyte an electric current is
due to drift of Positive and negative ions [other wrong options] [Discuss in forum] Free electrons Free electrons and holes Protons |
Q54 ⇒ Which of the following cells is more likely to
be damaged due to short circuiting ? Acid cell [other wrong options] [Discuss in forum] Daniel cell Dry Cell Fuel cell |
Q55 ⇒ The current capacity of a cell is measured
in Ah [other wrong options] [Discuss in forum] A W Wh |
Q56 ⇒ The electric cell is a device to obtain Electric energy from chemical energy [other wrong options] [Discuss in forum] Electrons Electric charge Electric force |
Q57 ⇒ What carries current in an electrolyte Both + ve and - ve ions [other wrong options] [Discuss in forum] Electrons only - ve ions only + ve ions only |
Q58 ⇒ What happens during the discharging of
Edison cell ? The emf decreases [other wrong options] [Discuss in forum] Relative density of electrolyte decreases The emf does not change Relative density increases |
Q59 ⇒ The current capacity of the charged secondary
cell does not depend on Rate of charging [other wrong options] [Discuss in forum] Rate of discharge Temperature Amount of active material |
Q60 ⇒ The amount of ions liberated by 96500 C
of charge passed through the electrolyte is
called ? Gram equivalent [other wrong options] [Discuss in forum] Electrochemical equivalent Chemical equivalent None of these |
Or |