1
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Which one of the following statements is correct for electrolysis of brine solution?
2
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
The standard electrode potential $$\mathrm{(M^{3+}/M^{2+})}$$ for V, Cr, Mn & Co are $$-$$0.26 V, $$-$$0.41 V, + 1.57 V and + 1.97 V, respectively. The metal ions which can liberate $$\mathrm{H_2}$$ from a dilute acid are
3
JEE Main 2022 (Online) 28th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Match List - I with List - II.
List - I | List - II | ||
---|---|---|---|
(A) | $$Cd(s) + 2Ni{(OH)_3}(s) \to CdO(s) + 2Ni{(OH)_2}(s) + {H_2}O(l)$$ | (I) | Primary battery |
(B) | $$Zn(Hg) + HgO(s) \to ZnO(s) + Hg(l)$$ | (II) | Discharging of secondary battery |
(C) | $$2PbS{O_4}(s) + 2{H_2}O(l) \to Pb(s) + Pb{O_2}(s) + 2{H_2}S{O_4}(aq)$$ | (III) | Fuel cell |
(D) | $$2{H_2}(g) + {O_2}(g) \to 2{H_2}O(l)$$ | (IV) | Charging of secondary battery |
Choose the correct answer from the options given below:
4
JEE Main 2022 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Given below are two statements :
Statement I : For KI, molar conductivity increases steeply with dilution
Statement II : For carbonic acid, molar conductivity increases slowly with dilution
In the light of the above statements, choose the correct answer from the options given below :
Questions Asked from Electrochemistry (MCQ (Single Correct Answer))
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