Representation of Cell

Q.

Explain the reaction of Calcium oxide and Silicon (IV) oxide

Q.

The process of separation of ions present in an ionic compound is known as :

1. Ionisation

2. Dissociation

3. Separation

4. Electrolysis

Q.

Write the equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.

Q. Assertion: Starting from aq. copper [II] sulphate solution, equations for the reactions at the cathode and anode during electrolysis of aq. $CuS{O}_4$ using active copper electrodes is;
at anode:
$C{u}^{+2}+2e^{-}\to Cu$
at cathode:
$Cu\to C{u}^{+2}+2e^{-}$
Reason: Oxidation always take place at anode and reduction at cathode.

1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
3. Both Assertion and Reason are false
4. Assertion is true but Reason is false
5. Assertion is false but Reason is true

Q. One beaker contains 0.15 M $Cd(N{O}_3{)}_2$ and a Cd metal electrode. The other beaker contains 0.20 M $AgN{O}_3$ and a Ag metal electrode. The cell representation of a cell in which cadmium metal oxidizes

1. Cd(s) | $C{d}^{2+}$ (aq, 0.15 M) || $A{g}^{+}$ (aq, 0.20 M) | Ag(s)
2. $A{g}^{+}$ (aq, 0.20 M) | Ag(s) || Cd(s) | $C{d}^{2+}$ (aq, 0.15 M)
3. $C{d}^{2+}$ || Cd(s) (aq, 0.15 M) | Ag(s) || $A{g}^{+}$ (aq, 0.20 M)
4. $A{g}^{+}$ (aq, 0.20 M) | Ag(s) || Cd(s) | $C{d}^{2+}$ (aq, 0.15 M)

Q. Explain oxidation in terms of gain or loss of oxygen/hydrogen with two examples.

Q. The notation to indicate a boundary between two phases in a electro- chemical cell is

1. \
2. |
3. /
4. | |

Q. One beaker contains 0.15 M $Cd(N{O}_3{)}_2$ and a Cd metal electrode. The other beaker contains 0.20 M $AgN{O}_3$ and a Ag metal electrode. The cell representation of a cell in which cadmium metal oxidizes

1. Cd(s) | $C{d}^{2+}$ (aq, 0.15 M) || $A{g}^{+}$ (aq, 0.20 M) | Ag(s)
2. $A{g}^{+}$ (aq, 0.20 M) | Ag(s) || Cd(s) | $C{d}^{2+}$ (aq, 0.15 M)
3. $C{d}^{2+}$ | Cd(s) (aq, 0.15 M) || Ag(s) | $A{g}^{+}$ (aq, 0.20 M)

Q. Explain oxidation in terms of gain or loss of oxygen/hydrogen with two examples.

Q. One beaker contains 0.15 M $Cd(N{O}_3{)}_2$ and a Cd metal electrode. The other beaker contains 0.20 M $AgN{O}_3$ and a Ag metal electrode. The cell representation of a cell in which cadmium metal oxidizes

1. None of the above.
2. $A{g}^{+}(aq,0.20M)|Ag\left(s\right)||Cd\left(s\right)|C{d}^{2+}(aq,0.15M)$
3. $C{d}^{2+}|Cd\left(s\right)(aq,0.15M)||Ag\left(s\right)|A{g}^{+}(aq,0.20M)$
4. $Cd\left(s\right)|C{d}^{2+}(aq,0.15M)||A{g}^{+}(aq,0.20M)|Ag\left(s\right)$

Q. Electrolysis is performed for the extraction of high reactive metals.

1. False
2. True

Q. Which of the following represents the anode half-cell reaction for the following galvanic cell: $Cu\left(s\right)|C{u}^{2+}\left(aq\right)||A{g}^{+}\left(aq\right)|Ag\left(s\right)$

1. 
2. 
3. 
4. 

Q. The notation to indicate a boundary between two phases in a electro- chemical cell is

1. |
2. /
3. | |
4. \

Q. With respect to the notation for cell representation, which one of the following statements is correct?

1. Anode is represented at left and cathode at right.
2. Anode is represented at right and cathode at left.

Q. What does the double line in the following cell represntation stand for?
$Mg\left(s\right)|M{g}^{2+}\left(aq\right)||A{l}^{3+}\left(aq\right)|Al\left(s\right)$

1. Cathode
2. Anode
3. Electrolyte
4. Salt bridge

Q. NaCO_3.10H_2O→ X→ Y\xrightarrow△ Z. Identify X, Y, Z.

Q. One beaker contains 0.15 M $Cd(N{O}_3{)}_2$ and a Cd metal electrode. The other beaker contains 0.20 M $AgN{O}_3$ and a Ag metal electrode. The cell representation of a cell in which cadmium metal oxidizes

1. $C{d}^{2+}$ | Cd(s) (aq, 0.15 M) || Ag(s) | $A{g}^{+}$ (aq, 0.20 M)
2. $A{g}^{+}$ (aq, 0.20 M) | Ag(s) || Cd(s) | $C{d}^{2+}$ (aq, 0.15 M)
3. Cd(s) | $C{d}^{2+}$ (aq, 0.15 M) || $A{g}^{+}$ (aq, 0.20 M) | Ag(s)

Q.

Give appropriate scientific reasons for the following statements:
Electrolysis of molten lead bromide is considered to be a redox reaction.

Q. Which of the following statements is /are correct?

1. In cell representation anode is represented at left and cathode at right.
2. In cell representation anode is represented at right and cathode at left.