The acid strength order is:

(1) I > IV > II > III

(2) III > I > II > IV

(3) II > III > I > IV

(4) I > III > II > IV

Acid strength of the conjugate acids of the following are-

(1) I > II > III > IV

(2) III > II > I > IV

(3) IV > III > II > I

(4) None of these

The acid dissociation constants of the following acids are given as under:

Compound K_a CICH₂COOH 136 × 10^–5 139 × 10^–5 8.9 × 10^–5 2.96 × 10^–5 CH₃CHCH₂COOH 1.52 × 10^–5 From this data, the following observations can be made. Mark the correct statements for above mentioned compounds.

(i) The above variation in acidities of the above acids are due to inductive effect only.

(ii) The above variation are both due to inductive and resonance effects.

(iii) Inductive effect varies sharply with distance.

(iv) –I effect of chlorine is not much.

(1) i and ii

(2) i and iii

(3) ii and iii

(4) iii and iv

If is mixed with NaOH solution. Acid base reaction occurs and HO- snatches H+ from organic molecule. Which carbon will loose H easily?

1. P

2. Q

3. R

4. S

The correct acidic strength order of acidic hydrogen x, y and z is respectively.

(1) x > z > y

(2) x > y > z

(3) z > y > x

(4) y > z > x

The correct basic strength order is:

(1) I > II > IV > III

(2) IV > III > II > I

(3) III > II > IV > I

(4) III > IV > II > I

The correct order of acid and basic strength for the following pair of compounds should be?

(1) I > II ; III > IV ; V > VI ; VII < VIII

(2) I < II ; III > IV ; V < VI ; VII > VIII

(3) I > II ; III > IV ; V > VI ; VII > VIII

(4) I < II ; III > IV ; V < VI ; VII < VIII

Observe the following reaction :

Which of the following is the correct order of acid strength :

(1)
(2)
(3)

(4)

Consider following compounds and decide as to which of the following statements are true ?

(1) (II) gives no reaction with Na metal, however, 1 mole of (IV) on reaction with Na metal will liberate 22.4 litres of H₂ gas at STP

(2) (I) will give brisk effervescence on addition of NaHCO₃ but will not bring any change in the colour of Br₂ water

(3) (III) Iiberates H2 gas with Na metal, gives white precipitate with Tollen's reagent but does not respond towards lucas reagent or 2, 4–DNP test.

(4) (IV) gives turbidity with anhydrous ZnCI₂

Which of the following carbocation will undergo rearrangement ?

1.  

2.

$3. {\mathrm{CH}}_3-\underset{ |}{\mathrm{C}}$
${\mathrm{CH}}_3\mathrm{H}-\stackrel{\oplus }{\mathrm{C}}=\mathrm{O}$

$4. {\mathrm{CH}}_3-\mathrm{NH}-\stackrel{\oplus }{\mathrm{C}}\mathrm{H}-\underset{|}{\mathrm{C}}$
${\mathrm{CH}}_2\mathrm{H}-{\mathrm{CH}}_3$