MCQs of Chapter # 08 [Electrochemistry] Class IX

 

Chemistry IX

MCQs [Chapter# 08]

 

i.                    It can conduct electric current:

a.       Benzene

b.      Sugar solution

c.      HCl

d.      Petrol

 

ii.                 Electrolysis is useful in:

a.       Extraction of metals

b.      Electroplating

c.      Both of these

d.      None of these

 

iii.               Electricity can passed from:

a.       Solid NaCl

b.      Liquid NaCl

c.      Molten NaCl

d.      All of the above

 

iv.                Pure water can conduct current only when:

a.       Few drops of acids are added

b.      Few drops of bases are added

c.      Both of these

d.      No change

 

v.                  Electrochemical equivalent is denoted by:

a.       A

b.      E

c.       EE

d.     Z

 

vi.                1 Faraday =

a.       95500 C

b.     96500 C

c.       97500 C

d.      98500 C

 

vii.             SI unit of  electrochemical equivalent is:

a.       gm/C

b.     Kg/ C

c.       mg/C

d.      ng/ C

 

viii.           The object which is to be coated is placed at:

a.      Cathode

b.      Anode

c.       Can be placed anywhere

d.      None of these

 

ix.                Salt bridge:

a.      Prevents mixing of two solution

b.      Enhances mixing of two solutions

c.       Provoke mixing of two solution

d.      None of these

 

x.                  Galvanic cell:

a.       Irreversible cell

b.      Primary cell

c.       Convert chemical energy to electrical energy

d.     All of the above

 

xi.                Dry cell is/are used in:

a.       Flash lights

b.      Calculators

c.       Clocks

d.      All of the above

 

xii.             Which of the following is characteristic feature of lead storage battery?

a.       It is used in automobiles

b.      It is a reversible cell

c.       It is a secondary cell

d.     All of these