1
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
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 2006
MCQ (Single Correct Answer)
+4
-1
Identify the correct statement for change of Gibb's energy for a system ($$\Delta $$Gsystem) at constant temperature and pressure.
A
If $$\Delta $$Gsystem < 0, the process is not spontaneous.
B
If $$\Delta $$Gsystem > 0, the process is spontaneous.
C
If $$\Delta $$Gsystem = 0, the system has attained equilibrium.
D
If $$\Delta $$Gsystem = 0, the system is till moving in a particular direction.
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The enthalpy and entropy change for the reaction:
Br2(l) + Cl2(g) $$ \to $$ 2BrCl(g)
are 30 kJ mol$$-$$1 and 105 J K$$-$$1 mol$$-$$1 respectively.
The temperature at which the reaction will be in equilibrium is
A
300 K
B
285.7 K
C
273 K
D
450 K
NEET Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12