An organic compound X on treatment with acidified K₂Cr₂O₇, gives compound Y which reacts with I₂, and NaOH to form CHI₃. The compound X can be-

1. CH₃OH

2. CH₃CHO 

3. CH₃COCH₃

4. CH₃CH(OH)CH₃

Which of the following gives the fastest Lucas test?

1.	CH2 = CH-CH2OH	2.	C6H5 - CH2OH
3.		4.

 $\underset{hv}{\overset{{\mathrm{SO}}_2{\mathrm{Cl}}_2}{\to }}\left(\mathrm{A}\right)\stackrel{\mathrm{NBS}}{\to }\left(\mathrm{B}\right)\stackrel{\mathrm{KSH}}{\to }\left(\mathrm{C}\right)$, Product (C) is:

Which of the reagents shown below would accomplish the following transformations?

      A                                     B
1. H3O⁺                   BH₃-THF; H₂O₂/NaOH
2. NaOH                  BH₃-THF; H₂O₂/NaOH
3. HBr in ether         Hg(OAc)₂/H₂O; NaBH₄
4. NaNH₂                 Hg(OAc)₂/H₂O; NaBH₄

, the missing reagent is:-

(1) CF₃CO₃H

(2) H₂SO₄ 

(3) LAH

(4) NaBH₄

Compound  and $\underset{\left(\mathrm{Q}\right)}{{\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{O}-{\mathrm{CH}}_2-{\mathrm{CH}}_3}$ can be differentiated by

(1) H₃O^⊕, Na

(2) H₃O^⊕, Tollens' test

(3) H₃O^⊕, Fehling test

(4) All of these

can be differentiated by:

1. Hinsberg test                 

2. Iso-cyanide test

3. NaNO₂, HCl, then β-Naphthol     

4. NaOH

(p-ethyl phenol) (p-methyl anisole) (p-ethyl benzyl alcohol)

Above compounds can be differentiated by using the reagent:-

(a) NaOH, Tollen's reagent, FeCl3

(b) CrO3, Tollen's reagent, FeCl3,

(c) Tollen's reagent, CrO3, FeCl3

(d) Na, Tollen's reagent, FeCl3

Give test to differentiate (Bromobenzene) Ph-Br and benzyl bromide (PhCH₂Br).
(1) (i) aq. KOH (ii) Na

(2) AgNO₃

(3) KMnO₄

(4) All these

Give test to differentiate 1,1-dichloroethane and 1, 2-dichloroethane:
1. 2,4-DNP then aq. KOH

2. Aq. KOH then 2, 4-DNP

3. NaHSO₃

4. Lucas reagent