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Science (English Medium) कक्षा १२ - CBSE Important Questions for Chemistry

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Chemistry
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Differentiate between  the following:

Fibrous proteins and Globular proteins

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Structure of Proteins

The two strands in DNA are not identical but are complementary. Explain.

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Nucleic Acids >> Structure of Nucleic Acids

Which one of the following is a monosaccharide: 

 starch, maltose, fructose, cellulose

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Monosaccahrides

What is the difference between acidic amino acids and basic amino acids?

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Amino Acids

 Write the name of the vitamin whose deficiency causes bleeding of gums.

 

 
Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Introduction of Vitamins

Name the base that is found in nucleotide of RNA only.

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Introduction of Nucleic Acids

Glucose on reaction with HI gives n-hexane. What does it suggest about the structure of glucose?

 

 
Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Structures of Glucose

Which component of starch is a branched polymer of α-glucose and insoluble in water?

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Preparation of Glucose

Deficiency of which vitamin causes scurvy?

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Vitamins >> Classification of Vitamins

What type of linkage is responsible for the formation of proteins?

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Nucleic Acids >> Chemical Composition of Nucleic Acids

Write the product formed when glucose is treated with HI ?

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Nucleic Acids >> Chemical Composition of Nucleic Acids

 Write one example of a Natural polymer.

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Denaturation of Proteins

 Write one example of a thermosetting polymer.

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Denaturation of Proteins

Differentiable between the following: 
Essential amino acids Non-essential amino acids 

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Amino Acids

Differentiate between the following :

Peptide linkage and Glycosidic linkage 

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Structure of Proteins

Define the following term:
Denaturation of protein

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Denaturation of Proteins

Define the following term:
Vitamins

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Vitamins >> Classification of Vitamins

Write the reactions involved when D-glucose is treated with the following reagent:
H2N-OH

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Structures of Glucose

Given below are two statements labelled as Assertion (A) and Reason (R).

Assertion (A): Proteins are found to have two different types of secondary structures viz alpha-helix and beta-pleated sheet structure.

Reason (R): The secondary structure of proteins is stabilized by hydrogen bonding.

Select the most appropriate answer from the options given below:

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Proteins >> Structure of Proteins

Account for the following:

There are 5 OH groups in glucose

Appears in 1 question paper
Chapter: [10] Biomolecules
Concept: Biomolecules in the Cell > Carbohydrates >> Structures of Glucose
< prev  1441 to 1460 of 1512  next > 
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CBSE Science (English Medium) कक्षा १२ Important Questions
Important Questions for CBSE Science (English Medium) कक्षा १२ Biology
Important Questions for CBSE Science (English Medium) कक्षा १२ Chemistry
Important Questions for CBSE Science (English Medium) कक्षा १२ Computer Science (C++)
Important Questions for CBSE Science (English Medium) कक्षा १२ Computer Science (Python)
Important Questions for CBSE Science (English Medium) कक्षा १२ English Core
Important Questions for CBSE Science (English Medium) कक्षा १२ English Elective - NCERT
Important Questions for CBSE Science (English Medium) कक्षा १२ Entrepreneurship
Important Questions for CBSE Science (English Medium) कक्षा १२ Geography
Important Questions for CBSE Science (English Medium) कक्षा १२ Hindi (Core)
Important Questions for CBSE Science (English Medium) कक्षा १२ Hindi (Elective)
Important Questions for CBSE Science (English Medium) कक्षा १२ History
Important Questions for CBSE Science (English Medium) कक्षा १२ Informatics Practices
Important Questions for CBSE Science (English Medium) कक्षा १२ Mathematics
Important Questions for CBSE Science (English Medium) कक्षा १२ Physical Education
Important Questions for CBSE Science (English Medium) कक्षा १२ Physics
Important Questions for CBSE Science (English Medium) कक्षा १२ Political Science
Important Questions for CBSE Science (English Medium) कक्षा १२ Psychology
Important Questions for CBSE Science (English Medium) कक्षा १२ Sociology
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