1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
For which one of the following equations is $$\Delta $$Horeact equal to $$\Delta $$Hof for the product ?
A
Xe(g) + 2F2(g) $$ \to $$ XeF4(g)
B
2CO(g) + O2(g) $$ \to $$ 2CO2(g)
C
N2(g) + O3(g) $$ \to $$ N2O3(g)
D
CH4(g) + 2Cl2(g) $$ \to $$ CH2Cl2(l) + 2HCl(g)
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
The molar heat capacity of water at constant pressure, C, is 75 J K$$-$$1 mol$$-$$1. When 1.0 kJ of heat is supplied to 100 g of water which is free to expand, the increase in temperature of water is
A
1.2 K
B
2.4 K
C
4.8 K
D
6.6 K
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
The equilibrium constants of the following are

N2 + 3H2 $$\rightleftharpoons$$ 2NH3;     K1

N2 + O2 $$\rightleftharpoons$$ 2NO;     K2

H2 + $${1 \over 2}$$O2 $$\rightleftharpoons$$ H2O;     K3

The equilibrium constant (K) of the reaction :

2NH3 + $${5 \over 2}$$ O2 $$\rightleftharpoons$$ 2NO + 3H2O will be
A
K2K33/K1
B
K2K3/K1
C
K23K3/K1
D
K1K33/K2
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following statements is not true?
A
Among halide ions, iodide is the most powerful reducing agent.
B
Fluorine is the only halogen that does not show a variable oxidation state.
C
HOCl is a stronger acid than HOBr.
D
HF is a stronger acid than HCl.
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