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Electrochemistry Chemistry - Electrochemistry

Rajasthan Board (RBSE) - STD 12 Science - Chemistry (Rajasthan - English Medium). 130 questions in this chapter.

Question types

Electrochemistry question types

130 questions across 7 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

130
Questions
7
Question groups
5
Question types
Sample Questions

Electrochemistry questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 2M.C.Q (1 Marks)1 Mark
If the concentration of $Zn ^{+2}$ and $Cu ^{+2}$ ions in Daniell cell is one unit ( 1 mole $dm ^{-3}$ ), then the value of electric potential will be :
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Q 4M.C.Q (1 Marks)1 Mark
Copper can be precipitated with acidic $CuSO _4$ and alkaline $Cu ( CN )_2$. If the same electric current is passed through their solution for the same time, which of the statement is true?
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Q 5M.C.Q (1 Marks)1 Mark
The standard electrode potential values of three metallic cations $X , Y , Z$ are, $0.52 V,-3.03 V$ and -1.18 V respectively. The order of reducing ability of corresponding metal is :
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Q 61 Marks Question1 Mark
Which of the following will have higher molar conductivity between them : (i) One mole NaCl in 100 ml solution (ii) One mole NaCl in 250 ml solution and why?
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Q 122 Marks Questions2 Marks
$Fe ^{2+} \rightarrow Fe ^{3+}\left( E ^{\circ}=-0.77 V\right)$ and$Cu \rightarrow Cu ^{2+}\left( E ^{\circ}=-0.34 V\right) On$ the basis of these values, find out whether $Cu ^{2+}$ ion can be reduce by $Fe ^{2+}$ ion or not?
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Q 152 Marks Questions2 Marks
Cell $Z n _{( s )}\left| Z n _{( aq )}^{2+} \| C u _{( aq )}^{+ 2 }\right| C u _{( s )}$. The value of cell potential for $Cu ( s )$ is positive. What conclusion is drawn from this?
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Q 173 Marks Question3 Marks
How much electricity will be required to obtain 1.5 gram on copper in 3 hours in an electrolytic cell of aqueous solution of copper sulphate? (Atomic mass of Cu = 63.5 )
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Q 183 Marks Question3 Marks
In which of the following pairs will more electric current flow and why?
(a) KCl solution $25^{\circ} C$ and KCl solution at $50^{\circ} C$.
(b) $0.2 \quad M \quad CH _3 COOH$ solution and 2 M $CH _3 COOH$ solution.
(c) $NH _4 OH$ solution at $25^{\circ} C$ and at wire at $50^{\circ} C$.
(d) Al wire at $25^{\circ} C$ and Al wire at $50^{\circ} C$.
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Q 274 Marks Questions4 Marks
Conductivity of 0.00241 M acetic acid is $7.896 \times 10^{-5} s cm ^{-1}$. Calculate its molar conductivity. If $\Lambda_m{ }^o$ for acetic acid is 390.5 S cm2 mol-1. What is its dissociation constant?
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