An aromatic compound A (C₈H₁₀O) gives the following tests with the given reagents.

The structure of  'A' 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. 

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^-

Which of the following products will contain the oxygen-18 (¹⁸O) isotope in the given reaction?


1. H₂O

2. Methyl benzoate

3. Both 1 and 2

4. Benzoic acid

Product (A) in the below mentioned reaction is:
 

1.

2.

3.

4.

Which of the following compounds is most prone to oxidation?
 

1.	\(\mathrm{CH}_3-\mathrm{CHOH}-\mathrm{CH}_3\)	2.
3.	\(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{O}-\mathrm{CH}_2-\mathrm{CH}_3\)	4.

Which of the following react with HBr at faster rate?