Other Reductions

Q.

How are the following conversions carried out?

(i) Propene → Propan-2-ol

(ii) Benzyl chloride → Benzyl alcohol

(iii) Ethyl magnesium chloride → Propan-1-ol.

(iv) Methyl magnesium bromide → 2-Methylpropan-2-ol.

Q. $\mathrm{Pd}/{\mathrm{BaSO}}_4\mathrm{is}\mathrm{called}\mathrm{as}:$.

1. $\mathrm{Adams}\mathrm{catalyst}$
2. $\mathrm{Ziegler}-\mathrm{Natta}\mathrm{catalyst}$
3. $\mathrm{Rosenmund}\mathrm{catalyst}$
4. $\mathrm{Wilkinson}\text{'}s\mathrm{catalyst}$

Q. Do electron withdrawing group increases reactivity towards nucleophilic addition reaction than electron donating group ? Is comparsion between benzaldehyde and propanal a exception to this?

Q. Which of the following is used for the conversion of 2- hexyne into trans-2- hexene?

1. $H_2,Pd/C/CaC{O}_3$
2. $H_2,Pt$
3. $NaB{H}_4$
4. $Na/liqN{H}_3$

Q. The most and least reactive substrates respectively in $S_{N}1$ reaction are

1. Both I and II
2. Both II and III
3. both I and III
4. Both III and IV

Q. The major product of the following reaction is:
$C{H}_{3}CH=CHC{O}_{2}C{H}_3\stackrel{LiAl{H}_4}{\to }$

1. $C{H}_{3}CH=CHC{H}_{2}OH$
2. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}OH$
3. $C{H}_{3}C{H}_{2}C{H}_{2}C{O}_{2}C{H}_3$
4. $C{H}_{3}C{H}_{2}C{H}_{2}CHO$

Q. In the reaction,
$C{H}_{3}COOH\stackrel{LiAl{H}_4}{\to }A\stackrel{PC{l}_5}{\to }B\stackrel{Alc.KOH}{\to }C,$ the product C is:

1. Ethylene
2. Acetyl chloride
3. Acetaldehyde
4. Acetylene

Q. Hydroformylation of olefins yields :

1. Aldehydes, which further undergo reduction to give alcohols.
2. Ketones, which further undergo reduction to give alcohols.
3. Ketones, which do not undergo reduction.
4. None of the above

Q. Identify the catalyst in the hydration of alkenes to produce alcohols.

1. $H_{2}S{O}_4$
2. $FeC{l}_3$
3. $Pt$
4. $Ni$

Q. Maximum decarboxylation occurs in:

1. $C{H}_{3}COOH$
2. $C_6{H}_{5}COOH$
3. $C_6{H}_{5}C{H}_{2}COOH$
4. $C{H}_{3}COC{H}_{2}COOH$

Q. Which of the following will have the highest reactivity towards $S_{n}Ar$ i.e. Nucleophilic Aromatic Substitution reaciton?

1. 
2. 
3. 
4. 

Q.

What is aqueous solution of aluminium chloride?

Q. HVZ reaction is specific for:

1. Replacement of $\beta$ - hydrogen
2. Replacement of $\alpha$ - hydrogen
3. Replacement of $\beta$ - carbons
4. Replacement of $\alpha$ - carbons

Q.

In the following sequence, product I, J, and L are formed. K represents a reagent.


The structure of the product L is:

1. 

2. 

3. 

4. 

Q. Which of the following amides will be most reactive toward Hoffmann- bromamide rearrangement?

1. 
2. 
3. 
4. Can't say

Q. What happens in Finkelstein reactions?

1. Dehydrohalogenation
2. Hydrogenation
3. Halogen exchange
4. Oxidation

Q.

With excess of HI or PI₃ , 1, 2 - ethanediol gives

1. Ethylene

2. Ethyl iodide

3. Ethylidene diiodide

4. Ethylene diiodide

Q. ${\mathrm{CH}}_3{\mathrm{COOCH}}_3+\left(\mathrm{excess}\right)C_6{H}_5\mathrm{MgBr}\stackrel{H+}{\to x}$

1. 1, 1-diphenyl ethanol
2. 1, 1-diphenyl methanol
3. methylphenyl ethanol
4. methylphenyl ketone

Q.

Here 'Z' is

1. CH₃ - CH₂OH

2. CH₃ - CHO

3. CH₃ - CH₂ - CH₃

4. CH₃ - CH₂ - COOH

Q. $C{H}_2=C{H}_2+H_2+CO\stackrel{\text{Catalyst}}{\to }X$

$X+H_2\stackrel{\text{Catalyst}}{\to }Y$

X and Y is/are :

1. $\text{X and Y both are}C{H}_3-C{H}_3$
2. $X:C{H}_{2}C{H}_{2}CHOandY:C{H}_{2}C{H}_{2}C{H}_{2}OH$
3. $X:C{H}_{2}C{H}_{2}C{H}_{2}OHandY:C{H}_{2}C{H}_{2}CHO$
4. $X:C{H}_{2}C{H}_{2}OHandY:C{H}_{2}CHO$

Q. Which reaction is used for the preparation of alpha - Bromoacetic acid?

1. Kolbe’s Reaction

2. Reimer-Tiemann Reaction

3. Hell volhard Zelinsky Reaction

4. Perkin’s Reation

Q. $\mathrm{Pd}/{\mathrm{BaSO}}_4\mathrm{is}\mathrm{called}\mathrm{as}:$.

1. $\mathrm{Adams}\mathrm{catalyst}$
2. $\mathrm{Ziegler}-\mathrm{Natta}\mathrm{catalyst}$
3. $\mathrm{Rosenmund}\mathrm{catalyst}$
4. $\mathrm{Wilkinson}\text{'}s\mathrm{catalyst}$

Q. Which is expected to react most readily with bromine in presence of sunlight?

1. $C{H}_{3}C{H}_{2}C{H}_3$
2. $C{H}_2=C{H}_2$
3. $CH\equiv CH$
4. $C{H}_3-CH=C{H}_2$

Q. During preparation of arene diazonium salts, the excess of nitrous acid, if any, is destroyed by adding?

1. $aq.N{a}_{2}C{O}_3$
2. $aq.NaOH$
3. $aq.N{H}_{2}CON{H}_2$
4. $aq.KI$

Q.
The number of compounds that give Cannizzaro reaction is:

Q. Which of the compounds is soluble in conc. $H_{2}S{O}_4$, decolourises Bromine $CC{l}_4$ and give a white precipitate with $AgN{O}_3$ in $N{H}_{4}OH$ but does not give a precipitate with $AgN{O}_3$ in alcohol?

1. $C{H}_{3}CH\left(Cl\right)C{H}_{2}CH=C{H}_2$
2. $C{H}_{3}C{H}_{2}C{H}_{2}CH=C{H}_2$
3. $C{H}_{3}C{H}_{2}C\equiv CH$
4. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}C{H}_3$

Q.
The number of compounds that give Cannizzaro reaction is:

Q. Read the following statement and explanation andanswer as per the options given below:
Assertion: Acetic acid does not undergo haloform reaction.
Reason: Acetic acid has no alpha hydrogens.

1. If both assertion and reason are correct, and reason is the correct explanation of the Asseration.
2. If both assertion and reason are correct, but reason is not the correct explanation of the assertion.
3. Asseration is correct but reason is in correct
4. Assertion is incorrect but reason is correct.

Q. The product formed by the treatment of ethanol and ethane nitrile in the presence of sulphuric acid is:

1. Ethyl acetate
2. Ethyl methyl ketone
3. Butanal
4. DiethyI ether

Q. A gas decolourises alkaline $KMn{O}_4$ solution, but does not give precipitate with ammoniacal $AgN{O}_3$ solution. The gas is:

1. ethane
2. ethylene
3. methane
4. acetylene