Preparation of Alcohols from Carbonyl Compounds

Q.

How the following conversions can be carried out?

(i) Propene to propan-1-ol

(ii) Ethanol to but-1-yne

(iii) 1-Bromopropane to 2-bromopropane

(iv) Toluene to benzyl alcohol

(v) Benzene to 4-bromonitrobenzene

(vi) Benzyl alcohol to 2-phenylethanoic acid

(vii) Ethanol to propanenitrile

(viii) Aniline to chlorobenzene

(ix) 2-Chlorobutane to 3, 4-dimethylhexane

(x) 2-Methyl-1-propene to 2-chloro-2-methylpropane

(xi) Ethyl chloride to propanoic acid

(xii) But-1-ene to n-butyliodide

(xiii) 2-Chloropropane to 1-propanol

(xiv) Isopropyl alcohol to iodoform

(xv) Chlorobenzene to p-nitrophenol

(xvi) 2-Bromopropane to 1-bromopropane

(xvii) Chloroethane to butane

(xviii) Benzene to diphenyl

(xix) tert-Butyl bromide to isobutyl bromide

(xx) Aniline to phenylisocyanide

Q. Why Peroxide Effect or Kharasch effect is applicable only to addition of HBr???

Q. $LiAl{H}_4$ converts acetic acid into

1. Acetaldehyde
2. Methane
3. Ethyl alcohol
4. Methyl alcohol

Q.

What is the reagent used in Etard reaction?

1. Ethanoyl chloride

2. Chromyl chloride

3. Cadmium chloride

4. ${\mathrm{SnCl}}_2$ and $\mathrm{HCl}$

Q. The dehydrohalogenation of 2-bromobutane with alcoholic
$KOH$ gives:

1. Only 2- butene
2. Only 1- butene
3. 2- Butene as the major product
4. 1- Butene as the major product

Q. Propanal can be converted into 1–propanol by:

1. $KMn{O}_4/H^{+}/△$
2. $KMn{O}_4/\left[O{H}^{-}\right]/△$
3. $N{H}_2-N{H}_2/\left[O{H}^{-}\right]/△$
4. $NaB{H}_4$

Q.

Choose the correct answer among the alternatives given, One mole of Ethyl acetate on treatment with an excess of ${\mathrm{LiAlH}}_4$ in dry Ether and subsequent acidification produces:

1. $1\mathrm{mol}$ of Acetic acid + $1\mathrm{mol}$ of Ethyl alcohol

2. $1\mathrm{mol}$ of Ethyl alcohol + $1\mathrm{mol}$ of Methyl alcohol

3. $2\mathrm{mol}$ of Ethyl alcohol

4. $1\mathrm{mol}$ of 2-Butanol

Q. Which of the following can be oxidised to its corresponding carbonyl compound?

1. 2-Hydroxypropane
2. Ortho-nitrophenol
3. Phenol
4. 2-Methyl-propan-2-ol

Q. Methylene chloride on hydrolysis gives

1. $CHC{l}_3$
2. $C{H}_{3}CHO$
3. $HCHO$
4. $CC{l}_4$

Q.
Sum of the number of alcoholic groups in P, Q is:

1. 1
2. 2
3. 3
4. 5

Q. Phosphorous acid on heating gives:

1. Phosphoric acid
2. Phosphine
3. Phosphinic acid
4. Both (a) and (b)

Q.

Vicinal and geminal dihalides are not distinguished by:

1. Aq.KOH/Tollen's reagent

2. KCN/hydrolysis

3. Alcoholic KOH

4. Both A and B

Q.

The correct representation of Nernsts equation is

1. 
   

2. 
   

3. 
   

4. None of these

Q. 56 How 1- Methyl cyclopentane reacts with bromine? What product is formed and how?

Q.

For an equation: Ni(s) + 2Ag⁺(aq) → Ni²⁺(aq) + 2Ag(s) the Nernst equation is written as:

1. 

2. 

3. 

4. 

Q. When glycerol is heated with excess of $HI$. It forms:

1. Isopropyl iodide
2. Glycerol tri-iodide
3. Propylene
4. n-Propyl iodide

Q. How to prepare ethyl bromide from propanoic acid

Q. Phosgene is a common name for

1. Tetra chloromethane
2. Carbonyl chloride
3. Mixture of $P{H}_3$ and $C{O}_2$
4. Phosphonyl Chloride

Q. cyclopen†an one react with CF3COOH to give what as product?

Q. Does propionic acid give iodoform test?

Q. In the given reaction: $C{H}_2=CH-CHO\to C{H}_2=CH-C{H}_{2}OH$ in the presence of X, what will be X:

1. H₂/Ni/∆
2. Pt/H₂
3. Na(BH)₄
4. H₂Wilkinson Catalyst

Q. What happens when chlorobenzine is subjected to hydrolysis?

Q. the addition of HOCL to allyl alcohol gives a.2-chloropropane-1, 3-diol b.3 chloropropane-1, 2-diol c.2, 3dichloropropanol d.1, 2, 3trichloropropane

Q.

Lucas reagent (anhyd. ZnCl₂ and conc HCl) was added to a certain alcohol, turbidity appeared immediately. What type of alcohol it is?

1. Tertiary alcohols

2. Isobutyl alcohol

3. Primary alcohol

4. Secondary alcohol

Q. 19 Write the reaction and name of product formed when cyclohexanone reacts with semicarbazide

Q.

97. How are the following conversions affected?

(a) ethanol to methanoic acid

Q. 12 Explain the mechanism for oxidation of ketone.

Q. $LiAl{H}_4$ converts acetic acid into

1. Methyl alcohol
2. Ethyl alcohol
3. Acetaldehyde
4. Methane

Q. Iso-butylene when subjected to hydroboration oxidation reaction yields

Q. Which of the following gives idoform test?

1. $C{H}_{3}C{H}_{2}OH$
2. $C_2{H}_{5}CHO$
3. $(C{H}_{2}OH{)}_2$
4. None of these