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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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An organic compound A with molecular formula C4H10O on treatment with phosphorus pentachloride gives alkyl chloride. Alkyl chloride on treatment with Mg in presence of dry ether gives a highly reactive compound B.
Compound B reacts with water to give hydrocarbon C. Alkyl chloride on treatment with Na in dry ether as a solvent gives alkane, 2,2,3,3-tetramethylbutane. Identify ‘A’, ‘B’, ‘C’

Appears in 3 question papers
Chapter: [10] Halogen Derivatives
Concept: Uses and Environmental Effects of Some Polyhalogen Compounds

How is phenol converted into the following?

Benzene

Appears in 3 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Write chemical equation of acetyl chloride with ethanol

Appears in 3 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Ethers

Write the preparation of ethanol from methyl magnesium iodide.

Appears in 3 question papers
Chapter: [11] Alcohols, Phenols and Ethers
Concept: Ethers

How is phenol converted into the following?

Benzene

Appears in 3 question papers
Chapter: [11.01] Alcohols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

How is phenol converted into the following?

Benzene

Appears in 3 question papers
Chapter: [11.02] Phenols
Concept: Alcohols, Phenols and Ethers >> Nomenclature

What happens when glucose is treated with Hydrogen cyanite (HCN).

Appears in 3 question papers
Chapter: [11.02] Phenols
Concept: Phenols >> Uses of Phenols

How is phenol converted into the following?

Benzene

Appears in 3 question papers
Chapter: [11.03] Ethers
Concept: Alcohols, Phenols and Ethers >> Nomenclature

Explain the acidic nature of carboxylic acids.

Appears in 3 question papers
Chapter: [12] Aldehydes, Ketones and Carboxylic Acids
Concept: Chemical Properties of Carboxylic Acids

Write a short note on Hoffmann bromamide degradation.

Appears in 3 question papers
Chapter: [13] Amines
Concept: Amines >> Preparation of Amines

Write a short note on Hoffmann bromamide degradation.

Appears in 3 question papers
Chapter: [13.01] Amines
Concept: Amines >> Preparation of Amines

What is the action of benzene diazonium chloride on phenol in alkaline medium?

Appears in 3 question papers
Chapter: [13.03] Diazonium Salts
Concept: Diazonium Salts >> Importance of Diazonium Salts in Synthesis of Aromatic Compounds

Define complex lipids

Appears in 3 question papers
Chapter: [14.02] Proteins
Concept: Biomolecules in the Cell > Proteins >> Structure, Classification and Functions

Write the reaction for the preparation of Nylon-6.

Appears in 3 question papers
Chapter: [15] Polymers
Concept: Introduction to Polymers >> Nylon 6

Write the reactions involved in the preparation of Teflon.

Appears in 3 question papers
Chapter: [15] Polymers
Concept: Introduction to Polymers >> Preparation of Polytetrafluoroethene (Teflon)

Write the reactions involved in the preparation of Teflon.

Appears in 3 question papers
Chapter: [15] Introduction to Polymer Chemistry
Concept: Introduction to Polymers >> Preparation of Polytetrafluoroethene (Teflon)

Define Green chemistry.

Appears in 3 question papers
Chapter: [16] Green Chemistry and Nanochemistry
Concept: Green Chemistry and Nanochemistry

Bottom ash of thermal power stations can be used as raw material for cement and brick industry. This example illustrates which of the following principle of green chemistry?

Appears in 3 question papers
Chapter: [16] Green Chemistry and Nanochemistry
Concept: Principles of Green Chemistry

Explain any three characteristic features of nanoparticles.

Appears in 3 question papers
Chapter: [16] Green Chemistry and Nanochemistry
Concept: Nanoparticles and Nanotechnology

Define Broad-spectrum antibiotics with a suitable example?

Appears in 3 question papers
Chapter: [16.01] Chemicals in Medicines
Concept: Classification of Drugs
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