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NEET CHEMISTRYAldehydes, Ketones and Carboxylic AcidsMedium

Question

The product of the below-mentioned reaction is: (Reaction Scheme Missing)

A

Option 1 (Image Missing)

B

Option 2 (Image Missing)

C

Option 3 (Image Missing)

D

Option 4 (Image Missing)

Step-by-Step Solution

To predict the product of a reaction involving Carboxylic Acids, one must identify the specific reagents and conditions provided in the reaction scheme (which is missing here).

Common reactions covered in NCERT Class 12, Unit 8 include:

  1. Preparation: Oxidation of primary alcohols or aldehydes using common oxidizing agents (KMnO4KMnO_4, K2Cr2O7K_2Cr_2O_7). Hydrolysis of nitriles (R−CNR-CN) or amides.
  • Reaction of Grignard reagents with crushed dry ice (CO2CO_2).
  1. Chemical Properties:
  • Acidity: Reaction with active metals and alkalies.
  • Reduction: Reduction to primary alcohols using LiAlH4LiAlH_4 or B2H6B_2H_6 (diborane).
  • Decarboxylation: Heating sodium salts of carboxylic acids with soda lime (NaOH + CaO) to remove CO2CO_2 and form alkanes.
  • Substitution: Halogenation of α\alpha-hydrogen (Hell-Volhard-Zelinsky reaction) using X2X_2/Red P.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Aldehydes, Ketones and Carboxylic Acids. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYAldehydes, Ketones and Carboxylic Acidsproductbelowmentionedreactionreactionscheme

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The product formed from the following reaction sequence is:

A.Data Missing
B.Data Missing
C.Data Missing
D.Data Missing
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Which of the chemical reagents can be used to distinguish between cis-cyclopenta-1,2-diol and trans-cyclopenta-1,2-diol?

A.Ozone
B.MnO₂
C.Aluminium isopropoxide
D.Acetone
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The product(s) formed from the following reaction is/are:

A.RCOOH only
B.$RCH_2COOH$ only
C.Data Missing
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The intermediate compound 'X' in the following chemical reaction is: $$\text{Toluene} \xrightarrow{CrO_2Cl_2/CS_2} X \xrightarrow{H_3O^+} \text{Benzaldehyde}$$

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C.$$C_6H_5-CH(OH)_2$$
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The product that cannot be formed in the following reaction is:

A.Data Missing
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D.Data Missing
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The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon is:

A.A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as aldehyde-ketone equilibration.
B.A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as carbonylation.
C.A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as keto-enol tautomerism.
D.A carbonyl compound with a hydrogen atom on its alpha-carbon never equilibrates with its corresponding enol.
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$$RMgX + CO_2 \xrightarrow{\text{dry ether}} Y \xrightarrow{H_3O^+} RCOOH$$ What is Y in the above reaction?

A.$(RCOO)_2Mg$
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Match the reagents in List-I with the corresponding reactions in List-II: **List-I (Reagent)** A. $H_2, Pd-BaSO_4$ B. (i) $CrO_2Cl_2, CS_2$ (ii) $H_2O/H^+$ C. $CO, HCl, \text{Anhyd. } AlCl_3/CuCl$ D. $CHCl_3, NaOH$ **List-II (Name of the reaction)** I. Gattermann-Koch reaction II. Reimer-Tiemann reaction III. Etard reaction IV. Rosenmund reduction Choose the correct answer from the options given below:

A.A-II, B-III, C-I, D-IV
B.A-IV, B-III, C-I, D-II
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