JOIN ADRE 2.0 Telegram Group

Electrolysis and Storage of Batteries MCQs | Electrolysis and Storage of Batteries Objective Type Questions and Answers

Questions
21 Capacity of dry cells is
A unaffected by the type of discharge
B more when it is supplying current for continuous periods
C more when it is supplying current for intermittent periods
D none of the above

Answer: more when it is supplying current for intermittent periods
22 Sulphated cells are indicated by
A the low voltage of the cell on discharge
B the decrease of the specific gravity
C the loss of capacity of the cell
D all above conditions

Answer: all above conditions
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

23 In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3
A 4 parts of acid to 6 parts of water
B 4 parts of acid to 4 parts of water
C 6 parts of acid to 4 parts of water
D none of the above

Answer: 4 parts of acid to 6 parts of water
24 Local action in a battery is indicated by
A excessive drop in the specific gravity of electrolyte even when the cell is on open circuit
B excessive gassing under load conditions
C both (a) and (b)
D none of the above

Answer: none of the above
25 Following will happen if battery charging rate is too high
A excessive gassing will occur
B temperature rise will occur
C bulging and buckling of plates will occur
D all above will occur

Answer: all above will occur
26 Internal resistance of a cell is due to
A surface contact resistance between electrode and electrolyte
B electrode resistance
C resistance of electrolyte
D all above

Answer: all above
27 If a battery is wrongly connected on charge following will happen
A current drawing will be very high
B current drawing will be nil
C current delivered by the battery will be high
D current drawing will be very small

Answer: current drawing will be very high
28 If a lead-acid cell is discharged below 1.8 V the following will happen.
A Internal resistance will increase
B Sulphation of plates will occur
C Capacity of cell will reduce
D All above will occur

Answer: All above will occur
29 Life of the batteries is in the following ascending order.
A Lead-acid cell, Edison cell, Nickel cadmium cell
B Nickel-cadmium cell, Edison cell, lead-acid cell
C Lead-acid cell, Nickel-cadmium cell, Edison cell
D Edison cell, Nickel-cadmium cell, lead-acid cell

Answer: Lead-acid cell, Edison cell, Nickel cadmium cell
30 Shelf life of a small dry cell is
A less than that of large dry cell
B more than that of large dry cell
C equal to that of large dry cell
D none of the above

Answer: less than that of large dry cell
31 Extent of corrosion in the underground metal work depends upon
A type of soil chemicals
B amount of moisture
C type of metals
D all above factors

Answer: all above factors
32 Mercury cell has which of the following characteristics ?
A Comparatively longer shelf life under adverse conditions of high temperature and humidity
B High power to weight ratio
C Flat discharge current-voltage curve
D All of the above

Answer: All of the above
33 Charging a sulphated battery at high rate results in
A damage to separators, cell caps covers and battery case due to excessive temperature
B warping of plates
C boiling of electrolyte due to gassing
D all above

Answer: all above
34 In a battery cover is placed over the element and sealed to the top of the battery container. This is done
A to discharge both of the above functions
B to discharge none of the above functions
C to reduce evaporation of water from electrolyte
D to exclude dirt and foreign matter from the electrolyte

Answer: to discharge both of the above functions
35 For a cell to work, which of the following condition(s) become necessary ?
A Electrolyte liquid or paste should be conducting
B Electrolyte must chemically react with one of the electrodes
C Two electrodes of different meta’s should be inserted in the electrolyte, not touching each other
D All above three conditions are necessary

Answer: All above three conditions are necessary
36 Which of the following battery is used for air-craft ?
A Nickel-iron battery
B Dry cell battery
C Silver oxide battery
D Lead-acid battery

Answer: Nickel-iron battery
37 Which of the following is incorrect ?
A A carbon-zinc cell has unlimited shelf life
B A lead-acid cell can be recharged
C A primary cell has an irreversible chemical reaction
D A storage cell has a reversible chemical reaction

Answer: A carbon-zinc cell has unlimited shelf life
38 Under normal charging rate, the charging current should be
A 40% of capacity
B 20% of capacity
C 30% of capacity
D 10% of capacity

Answer: 10% of capacity
39 When two batteries are connected in parallel, it should be ensured that
A they have identical internal resistance
B they have same make
C they have same ampere-hour capacity
D they have same e.m.f.

Answer: they have same e.m.f.
40 Petroleum jelly is applied to the electrical connections to the lead-acid battery
A prevent corrosion
B prevent short-circuiting
C prevent local heating
D reduce path resistance

Answer: prevent corrosion

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!
Advertisement
Assam Direct Recruitment Test Series