Preparation of Carboxylic Acids from Hydrocarbons

Q. Which of the following amines, on reaction with benzenesulphonyl chloride, will give a sulphonamide that is insoluble in alkali?

1. Ethylamine
2. Ethylmethylamine
3. Trimethylamine
4. Aniline

Q.

What is Tollens reagent?

Q. Cumene is oxidised in the presence of air to give compound '$A$' which upon treated with dilute acid gives compound '$B$' along with acetone. What is the compound '$B$'?

1. Benzene
2. Phenol
3. Ethyl phenyl ether
4. Isopropyl phenyl ether

Q.

How are Compounds Formed?

Q. On vigorous oxidation by acidified permanganate solution, $(C{H}_3{)}_{2}C=CH–C{H}_2–C{H}_3$ gives:

1. 
2. 
3. 
4. 

Q.

Can Benzoic acid undergo Friedel-crafts reaction?

Q. Name the reagent used for Bromination of phenol to 2, 4, 6-tribromophenol :

1. $B{r}_2\text{in}C{S}_2/CHC{l}_3$
2. $NBS$
3. $B{r}_2\text{in}{H}_2{O}_2$
4. $B{r}_2\text{in}{H}_{2}O$

Q. Wolff-Kishner reduction is:

1. reduction of carbonyl compounds into hydrocarbon
2. reduction of carbonyl compounds into alcohols
3. reduction of nitrobenzene into aniline
4. reduction of carbohydrates into alcohols

Q.

Which of the following cannot give benzoic acid on oxidation with alkaline KMnO₄ followed by acidification

1. 
2. 
3. 
4. 

Q. An aromatic compound ‘A’ (Molecular formula $C_8{H}_{8}O)$gives positive $2,4-DNP$ test. It gives a yellow precipitate of compound ‘B’ on treatment with iodine and sodium hydroxide solution. Compound ‘A’ does not give Tollens’ or Fehling’s test. On drastic oxidation with potassium permanganate it forms a carboxylic acid ‘C’ (Molecular formula $C_7{H}_6{O}_2),$ which is also formed along with the yellow compound in the above reaction. Identify A, B and C and write all the reactions involved.

Q.

H₂O is a compound.

1. True
2. False

Q. Tollen's reagent is used for the detection of aldehydes. When a solution of $AgN{O}_3$ is added to glucose with $N{H}_{4}OH$, then gluconic acid is formed.
$A{g}^{+}+e^{-}\to Ag;E_{red}^o=0.80V$
$C_6{H}_{12}{O}_6+H_{2}O\to C_6{H}_{12}{O}_7+2H^{+}+2e^{-};E_{oxi}^o=-0.05V$
$Ag(N{H}_3{)}_2^{+}+e^{-}\to Ag(s)+2N{H}_3;E_{red}^o=0.337V$

Find $\log K$ of the reaction?
$2A{g}^{+}+C_6{H}_{12}{O}_6+H_{2}O\to 2Ag\left(s\right)+C_6{H}_{12}{O}_7+2H^{+}$
$(\text{Take}:2.303\times \frac{RT}{F}=0.06\text{at}298K)$

1. 57.58
2. 25.00
3. 28.5
4. 46.25

Q. What does tarry oxidation product mean in the nitration of aniline?

Q. On treating phenol with chloroform in the presence of sodium hydroxide, a $–CHO$ group is introduced at ortho position of benzene ring. This reaction is known as:

1. Hydroboration-oxidation
2. Friedel-Craft's acylation
3. Kolbe's reaction
4. Reimer-Tiemann reaction

Q. Reaction of propene with diborane followed by alkaline hydrolysis in the presence of H2O2 gives

Q.

why is sulphuric acid not used during reactions of alcohol wth KI?

Q. The reaction of $SOC{l}_2$ on alcohol to form alkyl chlorides gives good yields because-

1. Alkyl chlorides are immiscible with $SOC{l}_2$
   
2. The other products of the reaction are gaseous and escape out.
3. Alcohol and $SOC{l}_2$ are soluble in water
4. The reaction occurs via intermediate formation of an alkyl chloro sulphite

Q. why benzophenone doesnot undergo cannizaro reaction and why 2, 2dimethylbu†an al undergo cannizaro reaction despite having alpha hydroge

Q.

How will you convert ethanoic acid into methanamine?

Q. 19. 1-bromo 1-phenyl ethane+koH+C2H5OH------>p, p is -

Q. Which of the following conversions can be carried out by Clemmensen reduction?

1. Benzaldehyde into benzyl alcohol
2. Cyclohexanone into cyclohexane
3. Benzoyl chloride into benzaldehyde
4. Benzophenone into diphenyl methane

Q. The end product of the following in the following reaction is

1. 
2. 
3. 
4. 

Q.

why is H₂SO₄ not used during the reaction of alcohols with KI?

Q. In Wolf-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into

1. $>C{H}_2$ group
2. $-C{H}_3$ group
3. $-C{H}_{2}OH$ group
4. $>CHOH$ group

Q. Which one of the following reactions will not form acetaldehyde?

1. 
2. 
3. 
4. 

Q. The final product of the following reaction is

1. Oxalic acid
2. Malonic acid
3. Adipic acid
4. Succinic acid

Q.

An unknown compound A has a molecular formula C₄H₆. When A is treated with an excess of Br₂ a new substance B with formula C₄H₆Br₄ is formed. A forms a white precipitate with ammoniacal silver nitrate solution. A may be

1. Butyne-1

2. Butyne-2

3. Butane-1

4. Butane-2

Q.

Which of the following cannot give benzoic acid on oxidation with alkaline KMnO₄ followed by acidification

1. 
2. 
3. 
4. 

Q. Predict the product of the given rearrangement reaction.

1. 
2. 
3. 
4. 

Q. How do you convert the following?