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Science (English Medium) Class 12 - CBSE Important Questions

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Do the following conversions in not more than two steps:

\[\begin{array}{cc}
\ce{CH3CN to CH3 - C - CH3}\\
\phantom{...........}||\\
\phantom{...........}\ce{O}
\end{array}\]

Appears in 2 question papers
Chapter: [9] Amines
Concept: Nomenclature of Amines

Do the following conversions in not more than two steps:

Appears in 2 question papers
Chapter: [9] Amines
Concept: Nomenclature of Amines

What are monosaccharides?

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Classification of Carbohydrates >> Monosaccahrides

Define the following term as related to proteins:

Primary structure

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Classification of Amino Acids

What are the expected products of hydrolysis of lactose?

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Classification of Carbohydrates

Differentiable between the following: 
Amylose and Amylopectin 

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Structures of Glucose

Answer the following question.
What is the basic structural difference between glucose and fructose?

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Structures of Glucose

Write the reaction involved when D-glucose is treated with the following reagent:

Br2 water

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Structures of Glucose

Write the reaction involved when D-glucose is treated with the following reagent:

(CH3CO)2O

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Structures of Glucose

Hydrolysis of sucrose is called ______.

Appears in 2 question papers
Chapter: [10] Biomolecules
Concept: Classification of Carbohydrates >> Disaccharides

What is the role of sulphur in the vulcanisation of rubber?

Appears in 2 question papers
Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Rubber

Write the names and structures of the monomers of the following polymers: Buna-N

Appears in 2 question papers
Chapter: [15] Polymers
Concept: Classification of Polymers> Based on Mode of Polymerisation

Write the names and structures of the monomers of the following polymers: Polyvinyl chloride

Appears in 2 question papers
Chapter: [15] Polymers
Concept: Classification of Polymers> Based on Structure

Write names and chemical formulae of monomers used in preparing Buna-N.

Appears in 2 question papers
Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Rubber

Write the structures of monomers used the following polymers: 
Nylon - 6, 6

Appears in 2 question papers
Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Condensation Polymerisation Or Step Growth Polymerisation

Is   a homopolymer or copolymer? Give reason. 

Appears in 2 question papers
Chapter: [15] Polymers
Concept: Types of Polymerisation Reactions - Copolymerisation

Write the monomers of the following polymer : 

Appears in 2 question papers
Chapter: [15] Polymers
Concept: Some Important Polymers

What is meant by the term ‘broad spectrum antibiotics’? Explain.

Appears in 2 question papers
Chapter: [16] Chemistry in Everyday Life
Concept: Compounds with Medicinal Properties >> Antimicrobials

Explain any two chemical methods of food preservation.

Appears in 2 question papers
Chapter: [16] Chemistry in Everyday Life
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives

After mother Skunk and Roger Skunk return home, she hugs him before he sleeps. What does this show about mother Skunk?

Appears in 2 question papers
Chapter: [2.05] Should Wizard Hit Mommy
Concept: Should Wizard Hit Mommy?
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