1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The correct order regarding the electronegativity of hybrid orbitals of carbon is
A
sp < sp2 < sp3
B
sp > sp2 < sp3
C
sp > sp2 > sp3
D
sp < sp2 > sp3
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Copper sulphate dissolves in excess of KCN to give
A
Cu(CN)2
B
CuCN
C
[Cu(CN)4]3$$-$$
D
[Cu(CN)4]2$$-$$
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
For the reaction :
CH4(g) + 2O2(g) $$\rightleftharpoons$$ CO2(g) + 2H2O(l),
$$\Delta $$Hr = $$-$$ 170.8 kJ mol$$-$$1.
Which of the following statements is not true?
A
The reaction is exothermic.
B
At equilibrium, the concentrations of CO2(g) and H2O(l) are not equal.
C
The equilibrium constant for the reaction is given by Kp = $${{\left[ {C{O_2}} \right]} \over {\left[ {C{H_4}} \right]\left[ {{O_2}} \right]}}$$
D
Addition of CH4(g) or O2(g) at equilibrium will cause a shift to the right.
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Given : The mass of electron is 9.11 $$ \times $$ 10$$-$$31 kg, Planck constant is 6.626 $$ \times $$ 10$$-$$34 J s, the uncertainty involved in the measurement of velocity within a distance of 0.1 $$\mathop A\limits^ \circ $$ is
A
5.79 $$ \times $$ 105 m s$$-$$1
B
5.79 $$ \times $$ 106 m s$$-$$1
C
5.79 $$ \times $$ 107 m s$$-$$1
D
5.79 $$ \times $$ 108 m s$$-$$1