Science (English Medium) इयत्ता १२ - CBSE Important Questions

Which one of the following is a polysaccharide:

Starch, Maltose, Fructose, Glucose

Define the following term as related to proteins:

Denaturation

What do you understand by the term glycosidic linkage?

What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?

Differentiate between  the following:

Fibrous proteins and Globular proteins

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

Which one of the following is a monosaccharide: 

 starch, maltose, fructose, cellulose

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

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

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

Deficiency of which vitamin causes scurvy?

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

Write the product formed when glucose is treated with HI ?

 Write one example of a Natural polymer.

 Write one example of a thermosetting polymer.

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

Differentiate between the following :

Peptide linkage and Glycosidic linkage 

Define the following term:
Denaturation of protein

Define the following term:
Vitamins

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