Tick the chemical effect of elecric current
  • boiling
  • motion
  • electro shock
  • Electroplating
Which of the following liquid is not a good conductor of electricity?
  • Orange juice
  • Tap water
  • Vinegar
  • Honey
Adding common salt to distilled water makes it
  • Good Conductor
  • Poor Conductor
  • No change
  • Both A and B
An electrolyte is
  • a metal
  • a solution
  • a liquid that conducts electricity
  • none of these
Flow of electrons is called
  • Electrode
  • Electrolyte
  • Electric current
  • Electroplating
The process of depositing a layer of any desired metal on another material by means of electricity is called
  • Electrolyis
  • Electric current
  • Electroplating
  • Electromagnetism
The metal rods or plates through which the current enters or leaves the conducting solution are called
  • electrodes
  • electrolytes
  • ions
  • conductors
Find the odd one out
  • Distilled water
  • Vegetable oil
  • Milk
  • Honey
Who had shown that if electrodes were immersed in water and current is passed bubbles of oxygen and hydrogen were produced
  • Thomas Alva Edison
  • Antoine Lavoisier
  • Marie Curie
  • William Nicholson
Most liquid that conducts electricity are solution of sugars
  • True
  • False
The cathode is connected to which terminal
  • Positive Terminal
  • Negative Terminal
Will lemon juice deflect a compass needle
  • Yes
  • No
Most liquid that conducts electricity are solution of Acids, bases and salt
  • True
  • False
What kind of change do you observe in the diagram given?
  • Electromagnetic change
  • Elctic change
  • Chemical change
  • Physical change
Why do we add little dilute sulphuric acid to copper sulphate solution during electroplating?
  • To increase acidity
  • To increase conductivity
  • So that the colour becomes more prominent
  • To burn copper sulphate
Which of the following metals is used in electroplating to make objects appear shining?
  • iron
  • aluminium
  • copper
  • chromium
Which of the following solutions will not make the bulb in Fig 14.2 glow?(a)(b) (c) (d)
  • sodium chlorides
  • copper sulphate
  • silver nitrate
  • sugar solution in diluted water
the phenomenon of decomposition of an electrolyte when electricity is passed through is known as
  • conduction
  • coating
  • electrolysis
  • electrorefining
The object to be electroplated is taken as ____________ electrode.
  • cathode
  • anode
  • electrode
  • none of these
one of the following is not used for electroplating metal articles. the one is -
  • nickel
  • chromium
  • sodium
  • silver
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