MP BOARD CLASS-10th-12th Model Question Paper-2025-26

 

Class-12^th                             Subject- Chemistry

Unit-08    -                 Aldehyde, Ketone & Carboxylic acid

10 Year Question for class 12 MP Board Students

2013

1. Following product are obtained

(i) Formic Acid from Acidic Acid

(ii) Acidaldehyde from Acetylene

OR

Explain preparation of Acidic Acid by quick vinegar process with diagrams 

2014

Explain following chemical reaction

(i) Clennsen Condensation (ii) Benzoin Condensation

OR

Explain preparation of Acetone by laboratory method with diagrams & Chemical reaction  

2015

1. Explain following chemical reaction

(i) Canizzaro reaction (ii) Perkin reaction

OR

Following product are obtained

(i) methanal from ethanal    

(ii) Acidaldehyde from Acetyl chloride

2016

1 Explain preparation of Acidic Acid by quick vinegar process with

(i) Diagrams (ii) Method (iii) Chemical reaction (iv) Precaution

OR

What happed that

(i) Acetyl chloride reduction with hydrogen in presence of Pd/ BaSO4  

(ii) Benzaldehyde boil with 45% NaOH

(iii) Ammonia reacts with formaldehyde 

(iv) Acetic Acid reacts with PCl₅

2017

1. Write short note on following

(i) Perkin Reaction (ii) Urotropine

OR

What happen when (give only equations)  

(i) Acetone reacts with conc. H₂SO₄

(ii) Benzoic acid reacts with SOCl₂

(iii) Acetic acid reacts with ammonia

(iv) Acetic acid reacts with caustic soda

2018

1. How will you obtained from Acetic acid

(i) Acetic anhydride (ii) Ethyl Acetate

(iii) Trichloroacetic acid (iv) Acetyl Chloride

OR

 How will you obtained following compound from benzaldehyde 

(i) Cinnamaldehyde (ii) Benzoin

(iii) Cinnamic Acid (iv) Benzoyl Chloride

2019

What happen when?

Reduction of ethanal takes place

(i) Clemmensen (ii) Wulf-Kishner

(iii) By LiAlH₄ (iv) By Na-Hg/H₂O

OR

Write the chemical equation for the following reaction

(i) Sandmeyer reaction (ii) Stephen reaction

(iii) Hoffmann Bromide reaction (iv) Haloform reaction

2020

1. Explain following reaction

(i) Etard reaction

(ii) Gattermann reaction 

(iii) Aldol condensation       

Or

(i) Explain Caizzaro reaction

(ii) Write silver mirror test for identification of aldehyde

2021

1. Write difference between aldehyde and ketone

S N	Test	Aldehyde	Ketone
1	Tollen's Reagent	Silver mirror is obtained	No reaction
2	Fehling's Solution	Formation of a reddish-brown colour precipitate	No reaction (Except alpha hydroxy ketone)
3	Reduced by LiAlH4	Form primary alcohols	Form secondary alcohols with difficulty
4	Reaction with alcohol in the presence of dry HCl	Form acetal	Form ketal with difficulty
5	Schiff's reagent	The pink colour is obtained	No reaction
6	Chromic Acid	Gives a green to blue precipitate.	No reaction
7	Sodium Nitroprusside Test	No reaction	The red colouration

 

OR

1. Explain following reaction

(i) Rosenmund Reaction (ii) Perkin Reaction

2022

1.Write the IUPAC name of following compound

CH₃CH(CH₃)CH₂CH₂CHO

CH₃CH=CHCHO

(CH₃)₃CCH₂COOH

OR

 2.Write chemical equation of the following reaction

Perkin rection

Cannizaro reaction

Rosenmund reaction

2023

1.Write the Etard reaction with chemical equation OR

 Write to uses of carboxylic acid

Uses of Carboxylic Acid

Carboxylic acids are used in a variety of industries. In the food industry, carboxylic acids are used as food additives and flavorings. In the pharmaceutical industry, carboxylic acids are used as active ingredients in medications. In the personal care industry, carboxylic acids are used in skin care products.

 

OR

 Write the structure of following compound

(i) 4-chloro-2,3 dimethyl pentane-1-ol

(ii) 2-ethoxy propane

(iii) 2,6 dimethyl phenol