Question 1 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">In which reactants are not contained within the cell but are continuously supplied from external source?</p>

Question 2 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Which of the following energy changes occur in galvanic cell?</p>

Question 3 :
KCl can be used in salt bridge as electrolyte in which of the following cells?

Question 4 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Hydrogen -Oxygen fuel cells are used in space craft to supply:</p>

Question 6 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">The potential across the metal and the aqueous solution of its ions of unit activity at 298K is known as:</p>

Question 7 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">In a galvanic cell, the reactions taking place in the anodic half cell and the cathodic half cell will be:</p>

Question 9 :
When the electric current is passed through a cell having an electrolyte, the positive ions move towards cathode and negative ions towards the anode. If the cathode is pulled out of the solution then____________.

Question 10 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Following are some of the facts about dry cell</p><p class="wysiwyg-text-align-left">i) It is also called Leclanche cell</p><p class="wysiwyg-text-align-left">ii) It is also called Daniel cell</p><p class="wysiwyg-text-align-left"><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">iii) Electrolyte is a moist paste of NH$_{4}$Cl<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">and ZnCl$_{2}$<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">in starch</p><p class="wysiwyg-text-align-left">iv) Cathodic reaction is</p><p class="wysiwyg-text-align-left"><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">MnO<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">$_{2}$<span class="wysiwyg-font-size-xx-small"><span class="wysiwyg-font-size-xx-small"> <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">(s) + NH$_{4}^{+}$<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">&#160;+ e$^{-}\rightarrow $<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">MnO(OH)+NH$_{3}$</p><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p>Select correct facts :</p>

Question 11 :
A reversible galvanic cell is connected to an external battery. If the EMF of the battery is less than the&#160;EMF of the galvanic cell, then the current:

Question 13 :
The value of equilibrium constant for a feasible cell reaction is:

Question 15 :
<p>In an experiment set up for the measurement of EMF of a half&#160;cell using a reference electrode and a salt bridge, when the salt bridge is&#160;removed, the voltage:</p>

Question 17 :
Electrolysis of a dilute solution of aqueous sodium chloride results in the cathode product:

Question 18 :
Assertion: When an electric current is passed through an aqueous solution of sodium chloride, sodium ions move towards cathode and chloride ions move towards anode. Reason: Cathode is a negatively charged electrode and therefore attracts Na$^+$ ions. Anode is a positively charged electrode and therefore attracts Cl$^-$ ions.

Question 19 :
<span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">The electrochemical cell stops working after some time because:</p>

Question 20 :
Assertion: In a Daniell cell, electrons flow from zinc electrode to copper electrode outside the cell.Reason: In Daniell cell, Zn electrode is anode and Cu is cathode.<br/>

Question 21 :
Assertion: The Daniell cell becomes dead after some time. Reason: Oxidation potential of zinc anode decreases and that of copper increases.

Question 22 :
<font color="#333333">State True or False.</font>In a galvanic cell, the half-cell with higher reduction potential acts as a reducing agent.&#160;

Question 23 :
During the electrolysis of the aqueous solution of copper sulphate using&#160;Pt electrodes, the reaction taking place at anode electrode is:

Question 24 :
The oxidation potential of a hydrogen electrode at $pH = 10$ and $P_{H_2}$ = 1 atm is:

Question 25 :
A voltaic cell is represented as ${A}_{(s)}\left| { { A }^{ +2 } }_{ (aq) } \right| \left| { { B }^{ +2 } }_{ (aq) } \right| {B}_{(s)}$. Which of the following statements of false regarding the above cell?

Question 26 :
Two&#160;platinum electrodes were immersed in a solution of $CuSO_4$ and electric&#160;current was passed through the solution. After some time, it was found that&#160;colour of $CuSO_4$ disappeared with evolution of gas at the electrode. The&#160;colorless solution contains:<br/>

Question 28 :
Assertion: At the end of electrolysis using Pt electrodes, an aqueous solution of $CuSO_4$ turns colorless. Reason: $CuSO_4$ changes to $Cu(OH)_2$ during elctrolysis.

Question 29 :
The negative Zn pole of a Daniel cell, sending a constant current through a circuit, decreases in mass by 0.13 g in 30 minutes. If the electrochemical equivalent of Zn and Cu&#160;are 32.5 and 31.5 respectively, the increase in the mass of the positive Cu pole in this time is:

Question 30 :
Which of the following statements are correct regarding the galvanic cell?