Aldehydes Ketones and Carboxylic Acids

Assertion A : Enol form of acetone [CH₃COCH₃] exists in < 0.1% quantity. However, the enol form of acetyl acetone [CH₃COCH₂OCCH₃] exists in approximately 15% quantity. Reason R : Enol form of acetyl acetone is stabilized by intramolecular hydrogen bonding, which is not possible in enol form of acetone. Choose the correct statement :

Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion. Statement II : The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product. In the light of the above statements, choose the most appropriate answer from the options given below :

Which one of the following reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?

Trichloroacetaldehyde was subjected to Cannizzaro’s reaction by using NaOH. The mixture of the products contains sodium trichloroacetate and another compound. The other compound is :

Which of the following compounds will most readily be dehydrated to give alkene under acidic condition ?

In the following reaction : Aldehyde + Alcohol   $\buildrel {HCl} \over \longrightarrow$  Acetal .tg {border-collapse:collapse;border-spacing:0;border:none;} .tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;} .tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;} .tg .tg-pjk9{font-size:22px;text-align:left} .tg .tg-cyim{font-size:22px;text-align:left;vertical-align:top} Aldehyde                    Alcohol HCHO t_BuOH CH₃CHO MeOH The best combination is

The increasing order of the reactivity of the following compound in nucleophilic addition reaction is : Propanal, Benzaldehyde, Propanone, Butanone

Given below are two statements : Statements I : Acidity of $\alpha$-hydrogens of aldehydes and ketones is responsible for Aldol reaction. Statement II : Reaction between benzaldehyde and ethanal will NOT give Cross - Aldol product. In the light of the above statements, choose the most appropriate answer from the options given below :

One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The alkene is

The predominant intermolecular forces present in ethyl acetate, a liquid, are:

Which of the following reagent is used for the following reaction ? $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_3 \stackrel{?}{\longrightarrow} \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CHO}$

The compound formed as a result of oxidation of ethyl benzene by KMnO_4 is :

A liquid was mixed with ethanol and a drop of concentrated H₂SO₄ was added. A compound with a fruity smell was formed. The liquid was :

Given below are two statements : Statement I : Ethyl pent-4-yn-oate on reaction with CH₃MgBr gives a 3$^\circ$-alcohol. Statement II : In this reaction one mole of ethyl pent-4-yn-oate utilizes two moles of CH₃MgBr. In the light of the above statements, choose the most appropriate answer from the options given below :

Which one of the following reactions will not yield propionic acid?

Given below are two statements : Statement I : The esterification of carboxylic acid with an alcohol is a nucleophilic acyl substitution. Statement II : Electron withdrawing groups in the carboxylic acid will increase the rate of esterification reaction. Choose the most appropriate option :

Two statements are given below : Statement I : The melting point of monocarboxylic acid with even number of carbon atoms is higher than that of with odd number of carbon atoms acid immediately below and above it in the series. Statement II : The solubility of monocarboxylic acids in water decreases with increase in molar mass. Choose the most appropriate option :

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : A solution of the product obtained by heating a mole of glycine with a mole of chlorine in presence of red phosphorous generates chiral carbon atom. Reason R : A molecule with 2 chiral carbons is always optically active. In the light of the above statements, choose the correct answer from the options given below:

Which among the followng has highest boiling point?