Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer?

1. ozone
2. MnO₂
3. Aluminium isopropoxide
4. Acetone

 

In the reaction 
 
the electrophile involved is

1. Dichloromethyl cation $\left(\stackrel{\oplus }{\mathrm{C}}{\mathrm{HCl}}_2\right)$

2. Formyl cation $\left(\stackrel{\oplus }{\mathrm{C}}\mathrm{HO}\right)$

3. Dichloromethyl anion $\left(\stackrel{\oplus }{\mathrm{C}}{\mathrm{HCl}}_2\right)$

4. Dichlorocarbene (:CCl₂)

The heating of phenyl-methyl ethers with HI produces

1. lodobenzene

2. Phenol

3. Benzene

4. Ethyl chlorides

A characteristic group test for phenolic group is:

1. Liebermann's nitroso reaction
2. Coupling with diazonium salt
3. Neutral FeCl3
4. All of the above

Dunstan’s test is used for identification of:

1. Acetone

2. Alcohol

3. Glycerol

4. Carbonyl compound

Which are not cleaved by HIO₄?
I : Glycerol
II : Glycol
III: 1, 3-propanediol
IV: Methoxy-2-propanol

1. I, II, III, IV

2. I, II

3. II, III

4. III, IV

Find missing reagents.
(a) x = LiAlH₄, y = NaBH₄

(b) x = LiAIH₄ / AlCl₃, y = LiAlH₄

(c) x = LiAIH₄, Y = LiAIH₄ / AlCl₃

(d) x = H₂ / Ni, y = H₂ / Pt

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^-