1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Which of the following pair of species have the same bond order?
A
CN- and NO+
B
CN- and CN+
C
$$O_2^-$$ and CN-
D
NO+ and CN+
2
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below:
$${1 \over 2}C{l_2}(g)$$ $$\buildrel {{1 \over 2}{\Delta _{diss}}{H^\Theta }} \over \longrightarrow $$ $$Cl(g)$$ $$\buildrel {{\Delta _{eg}}{H^\Theta }} \over \longrightarrow $$ $$C{l^ - }(g)$$ $$\buildrel {{\Delta _{Hyd}}{H^\Theta }} \over \longrightarrow $$ $$C{l^ - }(aq)$$
(Using the data, $${\Delta _{diss}}H_{C{l_2}}^\Theta $$ = 240 kJ/mol, $${\Delta _{eg}}H_{Cl}^\Theta $$ = -349 kJ/mol, $${\Delta _{hyd}}H_{C{l^ - }}^\Theta $$ = - 381 kJ/mol) will be :
A
+152 kJ mol−1
B
−610 kJ mol−1
C
−850 kJ mol−1
D
+120 kJ mol−1
3
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Standard entropy of X2, Y2 and XY3 are 60, 40 and 50 JK−1 mol−1 , respectively. For the reaction,
$${1 \over 2} X_2$$ + $${3 \over 2} Y_2 \to$$ XY3, $$\Delta H$$ = -30 kJ, to be at equilibrium, the temperature will be :
A
1250 K
B
500 K
C
750 K
D
1000 K
4
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
The equilibrium constants KP1 and KP2 for the reactions X $$\leftrightharpoons$$ 2Y and Z $$\leftrightharpoons$$ P + Q, respectively are in the ratio of 1 : 9. If the degree of dissociation of X and Z be equal then the ratio of total pressure at these equilibria is :
A
1 : 36
B
1 : 1
C
1 : 3
D
1 : 9
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