1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Mechanism of a hypothetical reaction
X2 + Y2 $$ \to $$ 2XY, is given below :
(i)   X2 $$ \to $$ X + X (fast)
(ii)  X + Y2 $$\rightleftharpoons$$ XY + Y (slow)
(iii) X + Y $$ \to $$ XY (fast)
The overall order of the reaction will be
A
2
B
0
C
1.5
D
1
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
In the electrochemical cell :
$$Zn\left| {ZnS{O_4}\left( {0.01\,M} \right)} \right|$$$$\left| {CuS{O_4}\left( {1.0M} \right)} \right|Cu,$$
the emf of this Daniell cell is E1. When the concentration of ZnSO4 is changed to 1.0 M and that of CuSO4 changed to 0.01 M, the emf changes to E2. From the followings, which one is the relationship between E1 and E2? (Given, RT/F = 0.059)
A
E1 < E2
B
E1 > E2
C
E2 = 01E1
D
E1 = E2
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
In which pair of ions both the species contain S $$-$$ S bond?
A
S4O62$$-$$, S2O32$$-$$
B
S2O72$$-$$, S2O82$$-$$
C
S4O62$$-$$, S2O72$$-$$
D
S2O72$$-$$, S2O32$$-$$
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
It is because of inability of ns2 electrons of the valence shell to participate in bonding that
A
Sn2+ is oxidising while Pb4+ is reducing
B
Sn2+ and Pb2+ are both oxidising and reducing
C
Sn4+ is reducing while Pb4+ is oxidising
D
Sn2+ is reducing while Pb4+ is oxidising