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Published on: 24/05/2021
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Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
Take MCQ Chemistry Test
1.
For the given cell, \(Mg|{ Mg }^{ 2+ }||{ Cu }^{ 2+ }|Cu\)
Mg is cathode
Cu is cathode
The cell reaction is \(Mg+{ Cu }^{ 2+ }\longrightarrow { Mg }^{ 2+ }+Cu\)
Cu is the oxidising agent
2.
Molar conductivity of ionic solution depends on -------
temperature
distance between electrodes
concentration of electrolytes in solution
surface area of electrodes
3.
Conductivity k, is equal to __________________.
\(\frac { 1 }{ R } \frac { l }{ A } \)
\(\frac { { G }^{ \ast } }{ R } \)
\({ \wedge }^{ m }\)
\(\frac { l }{ A } \)
4.
What will happen during the electrolysis of aqueous solution of CuSO4 by using platinum electrodes?
Copper will deposit at cathode
Copper will deposit at anode
Oxygen will be released at anode
Copper will dissolve at anode
5.
\({ \wedge }_{ m }^{ 0 } \ { H }_{ 2 }O\) is equal to __________________.
\({ \wedge }_{ m }^{ 0 }(HCl)+{ \wedge }_{ m }^{ 0 }(NaOH)-{ \wedge }_{ m }^{ 0 }(NaCl)\)
\({ \wedge }_{ m }^{ 0 }(H{ NO }_{ 3 })+{ \wedge }_{ m }^{ 0 }(Na{ NO }_{ 3 })-{ \wedge }_{ m }^{ 0 }(NaoH)\)
\({ \wedge }_{ m }^{ 0 }(H{ NO }_{ 3 })+{ \wedge }_{ m }^{ 0 }(NaoH)-{ \wedge }_{ m }^{ 0 }(Na{ NO }_{ 3 })\)
\({ \wedge }_{ m }^{ 0 }({ NH }_{ 4 }OH)+{ \wedge }_{ m }^{ 0 }(HCl)-{ \wedge }_{ m }^{ 0 }({ NH }_{ 4 }Cl)\)
1.
(b)
Cu is cathode
2.
(a)
temperature
3.
(a)
\(\frac { 1 }{ R } \frac { l }{ A } \)
4.
(a)
Copper will deposit at cathode
5.
(a)
\({ \wedge }_{ m }^{ 0 }(HCl)+{ \wedge }_{ m }^{ 0 }(NaOH)-{ \wedge }_{ m }^{ 0 }(NaCl)\)
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