Class 12 Chemistry Important Questions | Chapter 12 Aldehydes, Ketones And Carboxylic Acids

Here we have a given Class 12 Chemistry Important Questions for Maharashtra Board HSC Examination 2024. Every students want to score good marks in Class 12 Board Exam,but number of students don't know how to score good marks. Dear students, following given questions had been asked in earlier HSC Board Examinations. From this post, you will know which type of questions had been asked in earlier Board Exams and same questions or same type of questions will be asked in your upcoming examination. If you study all these questions, you will get very good marks in your board examinations, Because so many questions from the following given questions will be asked in your upcoming examination.Therefore go through our Class 12 Chemistry Important Questions which are given in chapter-wise manner and simply try to solve these questions to score very good marks in Chemistry and obviously, you will! Best wishes to all dear students for your upcoming Maharashtra State Board Exam 2024.


यहां हमारे पास महाराष्ट्र बोर्ड HSC परीक्षा 2024 के लिए कक्षा 12वीं के Chemistry के महत्वपूर्ण प्रश्न दिए गए हैं। प्रत्येक छात्र कक्षा 12वीं की बोर्ड परीक्षा में अच्छे अंक प्राप्त करना चाहते हैं, लेकिन कई छात्र यह नहीं जानते कि अच्छे अंक कैसे प्राप्त करें। प्रिय छात्रों, नीचे दिए गए प्रश्न पिछले एचएससी बोर्ड परीक्षाओं में पूछे गए थे। इस पोस्ट से आप जानेंगे कि पिछली बोर्ड परीक्षाओं में किस प्रकार के प्रश्न पूछे गए थे और आपकी आगामी परीक्षा में भी इसी प्रकार के प्रश्न पूछे जाएंगे। यदि आप इन सभी प्रश्नों का अध्ययन करते हैं, तो आप अपनी बोर्ड परीक्षाओं में बहुत अच्छे अंक प्राप्त करेंगे, क्योंकि निम्नलिखित दिए गए प्रश्नों में से बहुत सारे प्रश्न आपकी आगामी परीक्षा में पूछे जाएंगे। इसलिए हमारे कक्षा 12 के Chemistry के महत्वपूर्ण प्रश्नों को देखें जो अध्याय में दिए गए हैं | Chemistry में बहुत अच्छे अंक प्राप्त करने के लिए इन प्रश्नों को बुद्धिमान तरीके से हल करने का प्रयास करें और जाहिर है, आप करेंगे! सभी प्रिय छात्रों को आपकी आगामी महाराष्ट्र राज्य बोर्ड परीक्षा 2024 के लिए शुभकामनाएं।

 


Class 12 Chemistry Important Questions | Chapter 12 Aldehydes, Ketones And Carboxylic Acids

• How will you obtain propan-2-one using
(a) CH3CN
(b) Ca-salt of fatty acid?   (March 2008) 

• How is ethyl ethanoate prepared from
(a) Carboxylic acid
(b) Acid chloride.   (March 2008)

• Write a note on alkaline hydrolysis of an ester. (March 2008)

• What is the action of the following reagents on propan-2-one?
(a) Hydrogen cyanide
(b) Hydrazine.       (March 2008)

• How will you prepare ethanal from 1, 1-dichloroethane?
What is the reaction of acetaldehyde with
(a) Ammonical silver nitrate
(b) Fehling's solution? (Oct. 2008)

• What is the action of ammonia on:
(a) Acetaldehyde
(b) Formaldehyde? (Oct. 2008) 

• Write a note on Cannizarro's reaction. (Oct. 2008, 2010, March 2011)

• Starting from Ca-salts of fatty acids, write the preparation of:
(a) Acetaldehyde
(b) Acetone            (March 2009)

• What is the action of following reagents on acetaldehyde?
(a) Na-Hg/H2O
(b) Ammonia 
(c) Sodium bisulphate   (March 2009)

• Convert the following :
a) Dry ice into acetic acid
b) Ethyl acetate into acetone (March 2009)

• Write a note on aldol condensation. (March 2009, March 2010)

• What is the action of following reagents on ethanal?
(a) Fehling solution
(b) Tollen's reagent   (March 2010)

• Explain:
(a) Cannizzaro's reaction
(b) Clemensen's reduction. (Oct. 2010) 

• How will you obtain-
a) Diacetonamine from acetone?
b) Urotropine from formaldehyde?
c) Acetaldoxime from acetaldehyde? (March 2011)

• What are aldehydes and ketones? Write a note on Cannizzaro's reaction. (March 2011)

• How is acetic acid prepared from
(a) Dry ice
(b) Methyl cyanide? (March 2010)

• What is the action of ethyl magnesium iodide on ethyl methanoate in equimolar quantities? (March 2010)

• What happens when -
a) Acetic acid is heated with P2O5?
b) Silver acetate is heated with methyl iodide?
c) Acetic acid is treated with sodium bicarbonate? (Oct. 2010)

• Define 'Ester'. (Oct. 2010)

• What is the action of excess of methyl magnesium iodide on ethyl ethanoate? (March 2011) 

• How is 4-methylpent-3-en-2-one obtained from propan-2-one? (March 2013)

• How are the following compounds prepared?
a) Benzaldehyde from benzene.
b) Acetophenone from benzene.
c) Benzaldehyde from benzoyl chloride. (March 2013)

• Mention 'two' uses of propan-2-one. (March 2013)

• Explain the mechanism of aldol condensation. (Oct. 2013)

• How is benzophenone prepared from benzonitrile ? (Oct. 2013)

• Explain the structure of carbonyl functional group. (Oct. 2013)

• Write a note on aldol condensation. (March 2014, March 2017)

• Write a note on self oxidation-reduction reaction of aldehyde with suitable example. (March 2014) [Cannizzaro reaction]

• Write the structure and IUPAC names of all the metamers represented by formula C4H10O. (Oct. 2014)

• Write balanced chemical equations for action of ammonia on
(a) formaldehyde 
(b) acetaldehyde
(c) acetone           (Oct. 2014)


• Write a note on Friedel Craft's acylation. (March 2015)

• Explain, why are boiling points of carboxylic acids higher than corresponding alcohols. (March 2015)

• Write the structures and IUPAC names of the following compounds: 
(a) Adipic acid
(b) a-methyl butyraldehyde.  (March 2015)

• Write mechanism of Aldol addition reaction. (March 2015)

• What is metamerism? Explain metamerism with suitable examples of ethers. (March 2016)

• What are ketones? How are ketones classified? (March 2016)

• Explain the mechanism of esterification. (March 2016)

• How is ethanoic acid prepared from dry ice? (March 2017)

• Write a note on aldol condensation. (March 2017)

• Write only reactions for the preparation of benzophenone from benzonitrile. (March 2018)

• What is the action of the following reagents on ethanoic acid? 
i. LiAlH4/H3O+
ii. PCl3, heat         (March 2018)

• Write the IUPAC name of CH2=CH-COOH.   (March 2019)

• How will you convert acetone to acetone cyanohydrin? (March 2019)

• Explain in detail aldol condensation of aldehyde. (March 2019)

• How is benzoic acid prepared from dry ice? (March 2019)

• Explain the mechanism of aldol addition reaction. Mention two uses of carboxylic acids. (March 2020)

• Write balanced chemical reaction for preparation of acetic anhydride using acetic acid. (March 2020)

• Write structural formula of the alcohol that results when acetaldehyde is reacted with CH3MgBr in the presence of dry ether and the product is hydrolysed. (March 2020)

👉 Students are suggested to go through our Class 12 Chemistry Important Questions to score more in your upcoming 2024 Board Examination. 👇👇

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