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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. |
Q1 ⇒ Which of the following is not the name of a
secondary cell ? Fuel cell [other wrong options] [Discuss in forum] Acid cell Alkali cell Storage cell |
Q2 ⇒ Who was the first to design storage cell ? Plante [other wrong options] [Discuss in forum] Galvani Edison Volta |
Q3 ⇒ Whithin the electric cell, the charge is transported
by Both positive and negative ions [other wrong options] [Discuss in forum] Free electrons Only positive ions Only negative ions |
Q4 ⇒ First electrochemical cell was designed by Galvani [other wrong options] [Discuss in forum] Faraday Lechlanche None of these |
Q5 ⇒ In which of the following cells polarisation is
the major defect ? Voltanic cell [other wrong options] [Discuss in forum] Lechlanche cell Daniel cell None of these |
Q6 ⇒ Capacity of a dry cell is more when it supplies current intermittently. [other wrong options] [Discuss in forum] more when it supplies current continuously. not affected by the type of discharge. none of the above. |
Q7 ⇒ Standard cell will have precise and accurate constant voltage when current drawn from it is few microamperes only. [other wrong options] [Discuss in forum] 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. |
Q8 ⇒ In a lead acid battery, the level of the electrolyte should be above the level of plates. [other wrong options] [Discuss in forum] equal to that of the plates. below the level of plates. none of the above. |
Q9 ⇒ Vent plug is provided in each lead acid cell to all of the above. [other wrong options] [Discuss in forum] pour water or electrolyte when needed. check the electrolyte level. allow escape out of gases during charging. |
Q10 ⇒ In comparison to constant current charging method, the constant
voltage charging method of charging a lead acid battery has the
advantage(s) of both (b) and (c). [other wrong options] [Discuss in forum] increasing capacity of the battery. reducing charging time. avoiding of excessive gassing. |
Q11 ⇒ Nickel-cadmium accumulators in comparison to nickel-iron
accumulators have the advantages of low internal resistance and longer life. [other wrong options] [Discuss in forum] being lighter in weight and cheaper in cost. higher emf and higher efficiency. all of the above. |
Q12 ⇒ The emf of primary cell depends upon the both (b) and (c). [other wrong options] [Discuss in forum] physical dimensions of a cell. nature of electrolyte. nature of electrode. |
Q13 ⇒ During electroplating the weight of a substance deposited depends
upon quantity of electricity [other wrong options] [Discuss in forum] shape of the article room temperature all of the above |
Q14 ⇒ Which of the following statements is incorrect about lead acid
batteries ? When fully charged both of the plates become lead-per-oxide. [other wrong options] [Discuss in forum] The electrolyte in weak sulphuric acid. The number of plates is always odd. The number of negative plates is one more than the number of positive plates. |
Q15 ⇒ Common impurity in a battery electrolyte is iron. [other wrong options] [Discuss in forum] dust particles. lead crystals. sodium chloride. |
Q16 ⇒ Battery charging equipment should be installed both (a) and (b). [other wrong options] [Discuss in forum] in well ventilated, clean and dry place. as near as practical to the battery under charge. wherever convenient. |
Q17 ⇒ A floating battery is one which supplies current intermittently and also during idle period gets charged. [other wrong options] [Discuss in forum] which is charged and discharged simultaneously. in which battery voltage is equal to charger voltage. none of the above. |
Q18 ⇒ Internal resistance of primary cell varies all of the above except (a), [other wrong options] [Discuss in forum] inversely with the distance between electrodes. inversely with the surface area of electrodes. directly with the distance between electrodes with the nature of electrodes. |
Q19 ⇒ During electrodeposition. the amounts of different substances
liberated by same quantity of electricity are proportional to chemical equivalents. [other wrong options] [Discuss in forum] atomic weights. valency. atomic numbers |
Q20 ⇒ Which of the following statements is correct about lead acid
batteries ? lt does not deliver current on putting its components together until it is supplied electrical energy from an external source [other wrong options] [Discuss in forum] It delivers current as soon as its components are put together. Density of electrolyte increases while delivering current It has lead as positive plates. |
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