All Free Chemistry MCQs with Answers

• A. Beta-hydroxy carboxylic acids
• B. Acids, having one carbon more than the starting material
• C. Acids with one carbon less than the starting material
• D. Alpha-hydroxy acids

Explanation: The type of carboxylic acid produced from the hydrolysis of nitriles is acids, having one carbon more than the starting material.

• A. Conc. H2SO4
• B. Purnice stone
• C. Pt
• D. Ni

Explanation: Esterification process is a slow process when it is performed at room temperature also the process does not complete at all in the room…

• A. Butyric acid
• B. Barbaric acid
• C. lso-butyric acid
• D. Iso-Barbaric acid

Explanation: Butyric acid is the common name of butanoic acid. It is an oily, colorless liquid with an unpleasant odor.OPTION A:.

• A. Ester & Nitriles
• B. Nitriles & amines
• C. Alkenes & Alkynes
• D. Esters & Alcohols

Explanation: Esters hydrolyze to produce carboxylic acids by breaking the C-O ester linkage. Nitriles also hydrolyze to produce carboxylic acids.

• A. Alcohol
• B. Aldehyde
• C. Ketone
• D. Both A and B

Explanation: Option A: primary alcohol gets oxidised to carboxylic acid when oxidising agents are added, such as potassium permanganate (KMnO4), in an…

• A. Decreases with increase of volume
• B. Decreases with increase in molecular mass
• C. Increases with increase in molecular mass
• D. None of these options are correct

Explanation: Carboxylic acids become less soluble due to the larger hydrocarbon portion.

• A. Ester and Nitriles
• B. Nitriles and amines
• C. Alkenes and Alkynes
• D. Ester and Alcohols

Explanation: Carboxylic acids are formed by hydrolysis of ESTERS AND NITRILES.

• A. A
• B. B
• C. C
• D. D

Explanation: Z gives a fruity smell that means it is an ester. Esters are formed by reaction between carboxylic acid and alcohol.All three of are…

• A. A
• B. B
• C. C
• D. D

Explanation: All of them are derivatives of acetic acid.

• A. A
• B. B
• C. C
• D. D

Explanation: In terms of electrophilic character, carboxyl groups are not as reactive as carbonyl groups.

• A. Linsaturated dicorboxylic acid
• B. Long chain alkanoic acid
• C. Aromatic carboxylic acid
• D. Aromatic dicarboxylic acid

Explanation: Alkanoic acids are alkane-derived organic compounds that contain the carboxylate (-COOH) functional group and fatty acids are carboxylic…

• A. Structural isomers
• B. Stereo isomers
• C. Enantiomers
• D. Diasteromers

Explanation: Both Ethanol and Dimethyl ether have the same molecular formula but different structures. Hence they are structural isomers of each other.

• A. Electrophillic substitutions
• B. Nucleophllic substitution
• C. Electrophillic addition
• D. Nucleophillic addition

Explanation: The carboxyl (COOH) group is named after the carbonyl group (C=O) and a hydroxyl group.

• A. Two alcohols
• B. Carboxylic acid and alcohol
• C. Ketone and alcohol
• D. Aldehyde and alcohol

Explanation: Esters are made by the reaction of a carboxylic acid with an alcohol, a process that is called esterification.

• A. R - NH2
• B. R - COCl
• C. RCOOH
• D. RCH2 - OH

Explanation: This is the correct option. Acyl chlorides (R-COCl) react readily with NaOH due to their highly reactive nature.

• A. Acetic acid+HCl+H3PO4
• B. Acetic acid+PCl5
• C. Acetic acid+PCl3
• D. Acetic acid+C'2+H3PO4

Explanation: Acyl chloride and Phosphorous Acid are the products of the reaction of Acetic Acid and PCl3 .

• A. Chlorine releases electrons and destabilizes ClCH2CO2- anion
• B. Chlorine releases electrons and stabilizes the ClCH2CO2- anion
• C. Chlorine withdraws electrons destabilizes ClCH2CO2- anion
• D. Chlorine withdraws electreon and stabilizes the ClCH2CO2- anion

Explanation: The general equation is: HA--->H++A- When A- formed is more stbale, the equilibrium lies more to the right.

• A. By the oxidation of alcohol
• B. By acid hydrolysis of alkane nitrile
• C. By the reaction R-Mg-Br with CO2 followed by acid hydrolysis
• D. By the reduction of aldehydes

Explanation: In fact, by the reduction of aldehydes alcohols are obtained instead of carboxylic acids.While its oxidation gives Carboxylic Acids.

• A. Dehydration of carboxylic acid with P2O5
• B. Reaction of carboxylic acid with SOCl2
• C. Reaction of carboxylic acid with NH3
• D. Reaction of carboxylic acid with alcohol in the presence of conc. H2SO4

Explanation: Acid anhydride is prepared when carboxylic acids are dehydrated on heating strongly in the presence of phosphorus pentoxide P2O5 .

• A. Acid amide
• B. Acid halide
• C. Ester
• D. Acid anhydride

Explanation: Among the derivative of carboxylic acid, the acid halide is more reactive because the halogen group is good leaving.