1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which of the following are not state functions ?
(I) q + w     (II) q
(III) w        (IV) H $$-$$ TS
A
(I), (II) and (III)
B
(II) and (III)
C
(I) and (IV)
D
(II), (III) and (IV)
2
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
Given that bond energies of H $$-$$ H and Cl $$-$$ Cl are 430 kJ mol$$-$$1 and 240 kJ mol$$-$$1 respectively and $$\Delta $$Hf for HCl is $$-$$ 90 kJ mol$$-$$1, bond enthalpy of HCl is
A
380 kJ mol$$-$$1
B
425 kJ mol$$-$$1
C
245 kJ mol$$-$$1
D
290 kJ mol$$-$$1
3
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
Consider the following reactions :
(i) H+(aq) + OH$$-$$(aq) = H2O(l),  $$\Delta $$H = $$-$$ X1 kJ mol$$-$$1
(ii) H2(g) + 1/2O2(g) = H2O(l),   $$\Delta $$H = $$-$$ X2 kJ mol$$-$$1
(iii) CO2(g) + H2(g) = CO(g) + H2O(l),  $$\Delta $$H = $$-$$ X3 kJ mol$$-$$1
(iv) C2H2(g) + 5/2O2(g) = 2CO2(g) + H2O(l),    $$\Delta $$H = +X4 kJ mol$$-$$1

Enthalpy of formation of H2O(l) is
A
+X3 kJ mol$$-$$1
B
$$-$$X4 kJ mol$$-$$1
C
+X1 kJ mol$$-$$1
D
$$-$$X2 kJ mol$$-$$1
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Assume each reaction is carried out in an open container. For which reaction will $$\Delta $$H = $$\Delta $$E ?
A
2CO(g) + O2(g) $$ \to $$  2CO2(g)
B
H2(g) + Br2(g) $$ \to $$ 2HBr(g)
C
C(s) + 2H2O(g) $$ \to $$ 2H2(g) + CO2(g)
D
PCl5(g) $$ \to $$ PCl3(g) + Cl2(g)
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