1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The absolute enthalpy of neutralisation of the reaction :

Mg(O)(s) + 2HCl(aq) $$ \to $$ MgCl2(aq) + H2O(l) will be
A
$$-$$57.33 kJ mol$$-$$1
B
greater than $$-$$ 57.33 kJ mol$$-$$1
C
less than $$-$$ 57.33 kJ mol$$-$$1
D
57.33 kJ mol$$-$$1
2
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The work done during the expansion of a gas from a volume of 4 dm3 to 6 dm3 against a constant external pressure of 3 atm is (1 L atm = 101.32 J)
A
$$-$$ 6 J
B
$$-$$ 608 J
C
+ 304 J
D
$$-$$ 304 J
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are $$-$$ 382.64 kJ mol$$-$$1 and $$-$$ 145.6 kJ mol$$-$$1, respectively. Standard Gibb's energy change for the same reaction at 298 K is
A
$$-$$ 221.1 kJ mol$$-$$1
B
$$-$$339.3 kJ mol$$-$$1
C
$$-$$ 439.3 kJ mol$$-$$1
D
$$-$$ 523.2 kJ mol$$-$$1
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
If the bond energies of H $$-$$ H, Br $$-$$ Br, and H $$-$$ Br are 433, 192 and 364 kJ mol$$-$$1 respectively, the $$\Delta $$Ho for the reaction

H2(g) + Br2(g) $$ \to $$ 2HBr(g) is
A
$$-$$ 261 kJ
B
+103 kJ
C
+261 kJ
D
$$-$$103 kJ
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