Tag: electrolysis

Quizzes (4) Questions (120)

Questions Related to electrolysis

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

An electrolyte:

  1. has positive charge

  2. has negative chargec

  3. should be able to conduct charge without dissociating

  4. should able to form positive and negative ions
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A Chemical compound that conducts electricity by changing into ions like cations and anions when melted or dissolved into a solution.

Eg: Sodium chloride.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

Which of the following is an electrolyte?

  1. $AgNO _3$ solution

  2. Alcohol

  3. Mercury

  4. Sugar solution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Electrolyte is a substance that dissociates into ions in a solution and acquires the capacity to conduct electricity. Electrolysis is the dissociation of an electrolyte into ions at the electrodes by the passage of electric current.
During the electrolysis of silver nitrate solution, silver gets deposited at the cathode, while the anode loses an equal amount of Ag. Hence, $Ag{ NO } _{ 3 }$ is an electrolyte.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

Define good conductors of electricity.

  1. Compounds which do not break up from their solution on passing electric current

  2. Materials which do not allow electric current to pass through them easily

  3. Substances which allow electric current to pass through them easily

  4. Compounds which break up from their solution on passing electric current
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Substances which allow electric current to pass through them easily are called good conductors of electricity.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

Saturated solution of $KNO _3$ with agar-agar is used to make salt bridge because :

  1. size of $K^+$ is greater than that of $NO _3^-$
  2. velocity of $NO _3^-$ is greater than that of $K^+$
  3. Velocities of both $K^+$ and $NO _3^-$ are nearly the same
  4. both velocity and sizes of $K^+$ and $NO _3^-$ ions are same
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Because velocity of $k^+$ & $NO _{3}^{-}$ ions same & it so not happens one start getting accumulate which have higher velocity and block the test tube.

Multiple choice chemistry electrolysis electrolytes and non-electrolytes introduction to electrolysis chemical reactions

Which compounds dissociate to ions, when they dissolved in water?

  1. $BaSO _4; C _2H _4, AgCl$
  2. $KOH; C _6H _6; H _2SO _4$
  3. $Ca _3(PO _4) _2AgI; Cu(NO _3) _2$
  4. $AlCl _3; KOH; O _2$
  5. $KOH; H _2SO _4; KMnO _4$
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Strong electrolytes dissociate completely into ions in water. KOH, H2SO4, and KMnO4 are all strong electrolytes that dissociate fully.