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HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Important Questions for Chemistry

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Chemistry
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What is Grignard reagent? How is it prepared? Why are they prepared under anhydrous condition?

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Methods of Preparation of Alkyl Halides

What is the action of following on ethyl bromide?

\[\ce{Mg}\] in dry ether

Appears in 2 question papers
Chapter: [10] Halogen Derivatives
Concept: Reaction with Active Metals

What is the action of the following on ethyl bromide?

silver acetate

Appears in 2 question papers
Chapter: [10.01] Haloalkanes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloalkanes - Nucleophilic Substitution Reactions

What is Grignard reagent?

Appears in 2 question papers
Chapter: [10.02] Haloarenes
Concept: Hydrocarbons: Alkanes >> Reactions of Haloarenes - Nucleophilic Substitution

What is metamerism? 

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

How is phenol converted into the following?

benzoquinone

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Arrange the following in decreasing order of acid strength.

CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols and Phenols

Write the reaction involved in the preparation of phenol from benzene sulphonic acid.

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols and Phenols

Compound ‘A’ with molecular formula C6H5Cl is fused with NaOH at high temperature under pressure to give compound ‘B’. Compound ‘B’ on treatment with dil.HCl gives compound C having characteristic carbolic odour. Write the chemical equations in support of this. Name the process and give uses of compound C.

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Uses of Alcohols, Phenols and Ethers

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

Appears in 2 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

What is metamerism? 

Appears in 2 question papers
Chapter: [11.01] Alcohols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

How is phenol converted into the following?

benzoquinone

Appears in 2 question papers
Chapter: [11.01] Alcohols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

Appears in 2 question papers
Chapter: [11.01] Alcohols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

What is metamerism? 

Appears in 2 question papers
Chapter: [11.02] Phenols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

What is the action of bromine water on carbolic acid?

Appears in 2 question papers
Chapter: [11.02] Phenols
Concept: Phenols >> Methods of Preparation

How carbolic acid is prepared from benzene sulphonic acid ?

Appears in 2 question papers
Chapter: [11.02] Phenols
Concept: Phenols >> Phenols

How is phenol prepared from cumene?

Appears in 2 question papers
Chapter: [11.02] Phenols
Concept: Phenols >> Methods of Preparation

How is phenol converted into the following?

benzoquinone

Appears in 2 question papers
Chapter: [11.02] Phenols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Write a chemical reaction for the following conversion:

Acetic acid into ethyl alcohol.

Appears in 2 question papers
Chapter: [11.02] Phenols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

What is metamerism? 

Appears in 2 question papers
Chapter: [11.03] Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature
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