1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
In which of the following bond angle is maximum ?
A
NH3
B
NH4+
C
PCl3
D
SCl2
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Nitrogen forms N2, but phosphorus does not form P2, however, it converts P4, reason is
A
triple bond present between phosphorus atom
B
p$$\pi $$ $$-$$ p$$\pi $$ bonding is weak
C
p$$\pi $$ $$-$$ p$$\pi $$ bonding is strong
D
multiple bonds form easily.
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Change in enthalpy for reaction,

2H2O2(l) $$ \to $$ 2H2O(l) + O2(g)

if heat of formation of H2O2(l) and H2O(l) are $$-$$188 and - 286 kJ/mol respectively, is
A
$$-$$ 196 kJ/mol
B
+ 196 kJ/mol
C
+948 kJ/mol
D
$$-$$ 948 kJ/mol
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
When 1 mol of gas is heated at constant volume temperature is raised from 298 to 308 K. Heat supplied to the gas is 500 J. Then which statement is correct ?
A
q = w = 500 J, $$\Delta $$E = 0
B
q = $$\Delta $$E = 500 J, w = 0
C
q = w = 500 J, $$\Delta $$E = 0
D
$$\Delta $$E = 0, q = w = $$-$$ 500 J
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