Compound Y,  C₇H₈O is insoluble in water, dil HCI and aqueous NaHCO₃. It dissolves in dilute NaOH. When Y is treated with bromine water it is converted rapidly into a compound of formula C₇H₅OBr₃.  The structure of Y is:

1.		2.
3.		4.

Compounds I and II can be distinguished by using reagent:
(I) 4–Amino–2–methylbut–3–en–2–ol 
(II) 4–Amino–2,2–dimethylbut–3–yn–1–ol

1. NaNO₂/HCl

2. Br₂/H₂O

3. HCl/ZnCl₂ (anhydrous)

4. Cu₂Cl₂ + NH₄OH

$\underset{{\mathrm{CH}}_2{\mathrm{Cl}}_2}{\overset{{\mathrm{Br}}_2}{\to }}$ W. Product W is:

1. 

2. 

3. 

4. 

What is the correct order of dehydration rate for the compounds (i), (ii), and (iii) when treated with concentrated \(\text{H}_2\text{SO}_4\)?

(i)
(ii)
(iii)

1. (i) > (iii) > (ii)                                             

2. (i) > (ii) > (iii)

3. (ii) > (i) > (iii)                                             

4. (ii) > (iii) > (i)

Product (x) will be:

(a) 

(b) 

(c) 

(d) 

In each of the following groups, which is the strongest (best) nucleophile ?

(I)(1)H₃C-O^-            (2)                   (3)H₃C-S^- in CH₃OH

(II)(1)OH^-                (2) H₂O                        (3) ${\mathrm{NH}}_2^{-}$ in DMF

(III) (1)   (2)                  (3) CH₃O^- in DMSO

(a) I,3; II,3; III,2                                  (b) I,2; II,1; III,3

(c)  I,1; II,2; III,1                                 (d) I,3; II,1; III,3

(A) on heating isomerizes to (B). What is the structure of (B) ?

Which of the following statements is true?

1. CH₃CH₂S^- is both a stronger base and more nucleophilic than CH₃CH₂O^-

2. CH₃CH₂S^- is a stronger base but is less nucleophilic than CH₃CH₂O^-

3. CH₃CH₂S^- is a weaker base but is more nucleophilic than CH₃CH₂O^-

4. CH₃CH₂S^- is both a weaker base and less nucleophilic than CH₃CH₂O^-

What sequence of reagents is required to accomplish the following transformation?

1. (1) NBS, ROOR (2) CH₃CH₂O^- (3)2HBr (4) NH^-₂ (5) disiamylborane (6) H₂O₂,OH^-

2. (1) Cl₂hv (2) OH^-, heat; (3) 2HCl (4) OH-,heat (5) HgSO₄,H₂SO₄

3. (1) NBs,ROOR; OH-,DMSO

4. (1) Br₂,hv (2) t-butoxide (3) BH₃,THF (4) H₂O₂,OH^-

Ether cannot be produced as a major product by the reaction of: 

1.	CH3CH2Cl + Ag2O(dry)  →
2.	(CH3)3CCl + CH3CH2O-Na+  →
3.
4.