1
JEE Main 2018 (Online) 16th April Morning Slot
+4
-1
When 9.65 ampere current was passed for 1.0 hour into nitrobenzene in acidic medium, the amount of p-aminophenol produced is :
A
9.81 g
B
10.9 g
C
98.1 g
D
109.0 g
2
JEE Main 2018 (Offline)
+4
-1
How long (approximate) should water be electrolysed by passing through 100 amperes current so that the oxygen released can completely burn 27.66 g of diborane?
(Atomic weight of B = 10.8 u)
A
1.6 hours
B
6.4 hours
C
0.8 hours
D
3.2 hours
3
JEE Main 2018 (Online) 15th April Morning Slot
+4
-1
When an electric currents passed through acidified water, 112 mL of hydrogen gas at N.T.P. was collected at the cathode in 965 seconds. The current passed, in ampere, is :
A
1.0
B
0.5
C
0.1
D
2.0
4
JEE Main 2017 (Online) 9th April Morning Slot
+4
-1
To find the standard potential of M3+/M electrode,the following cell is constituted : Pt/M/M3+(0.001 mol L−1 )/Ag+(0.01 mol L−1 )/Ag

The emf of the cell is found to be 0.421 volt at 298 K. The standard potential of half reaction M3+ + 3e$$\to$$ M at 298 K will be :

(Given $$E_{A{g^ + }\,/\,Ag}^ -$$ at 298 K = 0.80 Volt)
A
0.38 Volt
B
0.32 Volt
C
1.28 Volt
D
0.66 Volt
EXAM MAP
Medical
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