Base Catalysed Hydrolysis of Esters

Q. Why benzoic acid is more acidic than formic acid or its homologous derivative?

Q. Which one of the following esters gets hydrolysed most easily under alkaline conditions?

1. 
2. 
3. 
4. 

Q. Which of the following alkyl halide is more reactive towards E2 reaction?

1. 
2. 
3. 
4. $C{H}_3-Cl$

Q.

How Formic acid and formaldehyde can be distinguished?

Q. $R-OH+HX\to R-X+H_{2}O$ In the above reaction, the reactivity of different alcohols is

1. Tertiary > Secondary > Primary
2. Tertiary < Secondary < Primary
3. Tertiary < Secondary > Primary
4. Secondary < Primary < Tertiary

Q. Saponification of ethyl benzoate with caustic soda as alkali gives

1. Phenol and ethanoic acid

2. Benzyl alcohol and ethanoic acid

3. Sodium benzoxide and ethanoic acid

4. Sodium benzoate and ethanol

5. Benzoic acid and sodium ethoxide

Q. When benzoic acid is treated with sulphuric acid in the presence of $S{O}_3$, the product is

1. m-sulphobenzoic acid
2. Sulphuric acid
3. Benzene
4. o- and p- sulphobenzoic acid

Q. The major products obtained when this substrate is subjected to $E_2$ reaction will be

1. 
2. 
3. Both (A) and (B)
4. None of these

Q.

Where should we use -oic acid and whher should we use carboxylic acid in the end of a compound .In my class they say that we should use carboxylic acid in the end when carboxylic acid s carbon is included in the long chain.what is the correct method

Q.

What happens when acetic acid reacts with ethanol in presence of conc. H₂SO₄ ?

1. Phenol is formed

2. Ethyl acetate is formed

3. Ethyl methyl ether

4. Butanol is formed

Q. What products are obtained when ethyl isopropylether is cleaved with hot HI?

1. Ethanol and 2-iodo-2-methylpropane
2. Ethanol and 2-methylpropane
3. Iodoethane and Isopropyl alcohol
4. Iodoethane and 2-methylpropane

Q. which of the following will not yield acetic acid on strong oxidation ? a) bu†an one b) propanone c) ethyl ethanoate d) ethano

Q. find the acidic strength 1) ch3-ch2-cooh 2) cooh-ch2-cooh 3) coo^--ch2-cooh 4) ch3-ch-ch3-ch2-cooh 5) ch3-c-ch3-ch3-ch2-coo

Q. The product of the given compound undergoing pinacol-pinacolone rearrangement is

1. 
2. 
3. 
4. 

Q.

Strongest acid out of the following is

1. Oxalic acid

2. Malonic acid

3. Succinic acid

4. Adipic acid

Q. Phenol on treatment with $C{O}_2$ in the presence of $NaOH$ followed by acidification produces compound $X$ as the major product. $X$ on treatment with $(C{H}_{3}CO{)}_2$ in the presence of catalytic amount of $H_{2}S{O}_4$ produces:

1. 
2. 
3. 
4. 

Q. Ester and acetamide are distinguished by

1. Hydrolysis with strong acids or alkali

2. Both (a) and (b)

3. Derivatives of fatty acids

4. None of these

Q. Unlike soap, detergent do not forms scum with hard water and is not affected by presence of mineral acids. why?

Q. Which one of the following esters gets hydrolysed most easily under alkaline conditions?

1. 
2. 
3. 
4. 

Q. ntWhich of the following compound will not ill acetic acid and strong oxidation?n ntA) butanonen ntB) propanonen ntC) ethyl ethanoaten ntD) ethanoln

Q. For the following reaction occuring through $S_{N}Ar$ i.e. Substitution Nucleophilic aromatic reaction, the Meisenheimer
complex is P , then the product Q will be:

1. 
2. 
3. 
4. None of the above.

Q.

On the basis of the information given in Column $\mathrm{I}$ and Column $\mathrm{II}$ match the reactant with the products.

Column 1	Column 2
..
..

Q. Compound $A$ undergoes formation of cyanohydrins which on hydrolysis gives lactic acid $\left(C{H}_{3}CHOHCOOH\right)$. Therefore, compound $A$ is:

1. acetone
2. formaldehyde
3. benzaldehyde
4. acetaldehyde

Q. What mechanism would be followed for the following reaction?
$\left(Ph\right)(C{H}_3{)}_{2}C-Br+NaOMe\to$

1. $S_{N}2$
2. $S_{N}1$ and $E_1$
3. $E_2$
4. $S_{N}1$ and $E_2$

Q. The major product for the following reaction will be:

1. 
2. 
3. 
4. No product formed.

Q. The process of making soap by the hydrolysis of fats and oils with alkalis is called:

1. hydrolysis
2. saponification
3. esterification
4. none of the above

Q. How many of the following statments are correct regarding Claisen condensation reaction (when an ester is treated with a strong base)?
1. A proton is removed from the $\alpha$ -carbon to form a resonance stabilised carbanion of the ester.
2. Carbanion acts as a nucleophile in a nucleophilic acyl substitution reaction with another ester molecule.
3. A new $C-C$ bond is formed.
4. $\alpha ,\beta$ unsaturated product is obtained

Q.

$2NaHC{O}_3\underrightarrow{{250}^{\circ }C}$ _______ $+H_{2}O+C{O}_2$

1. 

2. 

3. 

4. 

Q. Which among the following ester is most reactive towards nucleophilic attack?

1. $C{H}_{3}COOC{H}_3$
2. $HCOOC{H}_3$
3. $C{H}_{3}C{H}_{2}COO{C}_6{H}_5$
4. All are equally reactive

Q. Ester and acetamide are distinguished by

1. Hydrolysis with strong acids or alkali

2. Derivatives of fatty acids

3. Both (a) and (b)

4. None of these