Verified Solution • 2025–26 Session
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QAIPMT-2007-Ch-2304: NEET 2007 Chemistry - Class 11 AIPMT-2007-Ch-2304 Solution: 0.5 molal aqueous solution of a weak acid (HX) is 20% ionised.…
0.5 molal aqueous solution of a weak acid (HX) is 20% ionised. If for water is 1.86 K kg the lowering in freezing point of the solution is 0.56 K 1.12 K -0.56 K -1.12 K
Multiple Choice Options
- A (ii) > (iv) > (i) > (iii)
- B (iv) > (iii) > (ii) > (i)
- C (iv) > (ii) > (i) > (iii)
- D (i) > (ii) > (iii) > (iv)
Step-by-Step Verified Solution
Benzene having any activating group, i.e.,
OH, R etc. undergoes electrophilic substitution
very easily as compared to benzene itself. Thus,
toluene (C 6 H 5 CH 3 ) and phenol (C 6 H 5 OH) undergo
electrophilic substitution very readily than benzene.
Chlorine with +E and +M effect deactivates the
ring due to strong �I effect. So, it is difficult to
carry out the substitution in chlorobenzene than in
benzene, so correct order is
(iv) > (ii) > (i) > (iii)