1
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
What amount of electricity can deposit 1 mole of Al metal at cathode when passed through molten AlCl3 ?
A
0.3F
B
1F
C
3F
D
1/3F
2
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
Given the standard half-cell potentials (E$$^\circ$$) of the following as

$$\matrix{ {Zn \to Z{n^{2 + }} + 2{e^ - };} & {{E^o} = + 0.76V} \cr {Fe \to F{e^{2 + }} + 2{e^ - };} & {{E^o} = 0.41V} \cr } $$

Then the standard e.m.f. of the cell with the reaction $$F{e^{2 + }} + Zn \to Z{n^{2 + }} + Fe$$ is
A
$$-$$0.35 V
B
+ 0.35 V
C
+ 1.17 V
D
$$-$$1.17 V
3
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
The following equilibrium constants are given

$${N_2} + 3{H_2}$$ $$\rightleftharpoons$$ $$2N{H_3}$$; $${K_1}$$

$${N_2} + {O_2}$$ $$\rightleftharpoons$$ $$2NO$$; $${K_2}$$

$${H_2} + {1 \over 2}{O_2}$$ $$\rightleftharpoons$$ $${H_2}O$$; $${K_3}$$

The equilibrium constant for the oxidation of 2 mole of NH3 to give NO is
A
$${K_1} . {{{K_2}} \over {{K_3}}}$$
B
$${K_2}.{{K_3^3} \over {{K_1}}}$$
C
$${K_2}.{{K_3^2} \over {{K_1}}}$$
D
$$K_2^2.{{K_3^{}} \over {{K_1}}}$$
4
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
Which one of the following is a condensation polymer?
A
PVC
B
Teflon
C
Dacron
D
Polystyrene
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