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HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Important Questions

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The product of the following reaction is

\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{C2H5 - C - CH3 ->[H2/Ni][\Delta] \phantom{..}?}\end{array}\]

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Nucleophilic Addition Reactions

Write the chemical reaction involved in Cannizzaro reaction of methanal.

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Aldehydes and Ketones >> Chemical Reactions of Aldehydes and Ketones - Other Reactions

Write preparation of propanone by using ethanoyl chloride and dimethyl cadmium.

Appears in 1 question paper
Chapter: [12.01] Aldehydes and Ketones
Concept: Preparation of Aldehydes and Ketones

How is 1-nitropropane prepared from suitable oxime?

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Reactions Involving Cleavege of O-H Bond

How are  2 - nitropropane prepared from suitable oxime?

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Reactions Involving Cleavege of O-H Bond

Explain the mechanism of esterification

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Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Reactions Involving Cleavege of C-OH Bond

On acid hydrolysis, propane nitrile gives.

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

Identify the strongest acid amongst the followings:

  1. Chloroacetic acid          
  2. Acetic acid
  3. Trichloroacetic acid
  4. Dichloroaceticacid
Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Physical Properties of Carboxylic Acids

Explain, why are boiling points of carboxylic acids higher than corresponding alcohols

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Physical Properties of Carboxylic Acids

Write the structures and IUPAC names of the :Adipic acid compound

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Nomenclature of Carboxylic Acids

How is carbolic acid prepared from chlorobenzene?

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Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

Identify ‘A' and ‘B’ in the following reaction :

C6H5MgBr + C02 `(`> ‘A’   `(PCl_5)/()`> ‘B’

 

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

Show how the following compound can be converted to benzoic acid.

Phenylethene (Styrene)

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

How is nitromethane prepared from the following?

α-halogen carboxylic acid

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Chapter: [12.02] Carboxylic Acids
Concept: Chemical Properties and Reactions of Carboxylic Acid

How is methoxy benzene prepared from carbolic acid?

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Methods of Preparation of Carboxylic Acids

Complete and rewrite the balanced chemical equations

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Nomenclature of Carboxylic Acids

Complete and rewrite the balanced chemical equations

Butanone + 2, 4-dinitro-phenylhydrazine 

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Chemical Properties and Reactions of Carboxylic Acid

Write chemical equation for the following :
Hell - Vohlard - Zelinsky reaction

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Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Substitution Reactions in the Hydrocarbon Part

Write chemical equation for the following :
Fischer esterificatione

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Acids >> Chemical Reactions of Carboxylic Acids - Reactions Involving Cleavege of C-OH Bond

Write balanced equation for the following conversion: 
a. Cyclopropane carboxylic acid to cyclopropylmethanol.
b. Acetyl chloride to benzyl methyl ketone using dialkyl cadmium. 

Appears in 1 question paper
Chapter: [12.02] Carboxylic Acids
Concept: Chemical Properties and Reactions of Carboxylic Acid
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