1
JEE Advanced 2013 Paper 1 Offline
MCQ (More than One Correct Answer)
+3
-0.75
The initial rate of hydrolysis of methyl acetate (1M) by a weak acid (HA, 1M) is 1/100th of that of a strong acid (HX, 1M), at 25oC. The Ka of HA is
A
1 $$\times$$ 10-4
B
1 $$\times$$ 10-5
C
1 $$\times$$ 10-6
D
1 $$\times$$ 10-3
2
JEE Advanced 2013 Paper 1 Offline
MCQ (More than One Correct Answer)
+2
-0.5
The hyperconjugative stabilities of tert-butyl cation and 2-butene, respectively, are due to
A
$$\sigma \to \pi$$ (empty) and $$\sigma \to \pi^*$$ electron delocalisations
B
$$\sigma \to \sigma^*$$ and $$\sigma \to \pi$$ electron delocalisations
C
$$\sigma \to p$$ (filled) and $$\sigma \to \pi$$ electron delocalisations
D
p (filled) $$\to \sigma^*$$ and $$\sigma \to \pi^*$$ electron delocalisations
3
JEE Advanced 2013 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-0.75
Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25oC. For this process, the correct statement is
A
The adsorption requires activation at 25oC.
B
The adsorption is accompanied by a decrease in enthalpy
C
The adsorption increases with increase of temperature
D
The adsorption is irreversible
4
JEE Advanced 2013 Paper 1 Offline
MCQ (More than One Correct Answer)
+3
-0.75
Benzene and naphthalene form an ideal solution at room temperature. For this process, the true statement(s) is(are)
A
$$\Delta G$$ is positive
B
$$\Delta S_{system}$$ is positive
C
$$\Delta S_{surroundings}$$ = 0
D
$$\Delta H$$ = 0
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