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^-

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

1. 

2. 

3. 

4. 

The major product of the following reaction sequence will be

$\underset{\left(1\right)}{\overset{\mathrm{PhCOCl}/\mathrm{Pyridine}}{\to }}\underset{\left(2\right)}{\overset{C{H}_{3}COCl/AlC{l}_3}{\to }}\underset{\left(3\right)}{\overset{Zn-Hg/HCl/∆}{\to }}\underset{\left(4\right)}{\overset{B{r}_2/Fe}{\to }}$

1.
2.
3.
4.

How many moles of HI are consumed in above reaction?

1. 1

2. 2

3. 3

4. 4

Power alcohol is a mixture of petrol and alcohol in the ratio:

1. 4:1                         

2. 1:4

3. 2:1                         

4. 1:2

Fenton's reagent is:

1. H₂O + FeSO4                     

2. H₂O₂ + FeSO₄

3. H₂O₂ + ZnSO₄                   

4. NaOH + FeSO₄

The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is:

1. Acidic KMnO₄

2. aAkaline K₂Cr₂O₇

3. Chromium anhydride in glacial acetic acid

4. Pyridinium chlorochromate

Ethers are not distilled to dryness for fear of explosion. This is due to formation of:

1. oxides                             

2. alcohol

3. ketones                           

4. peroxides

Rectified spirit contains:

1. 75.0 % alcohol                           2. 85.5% alcohol

3. 95.6 % alcohol                           4. 100.0% alcohol