12th Class Fsc Chemistry Online Preparation for chapter 14 (Macromolecules) Short Questions

Question # 1

Define Enzymes ,name their two properties?

Ans 1: The reaction catalyst of biological systems produced by living cells and are capable of catalyzing chemical reaction are called enzymes.
Properties of enzymes:
1.Enzymes are protein or contain proteins as essential components and in addition require non protein components which are also essential for their activity.
2.Many enzymes contain vitamins as their co factors for example ,nicotinamide adenine dinucleotide contain nicotinamide vitamin.

Question # 2

Define condensation polymerization.

Ans 1: The polymerization results from the mutual reaction of two functional groups .The reaction usually involves the removal of a water molecule or methanol molecule,It take place at both end of the growing chain.

Question # 3

Explain denaturation of protein?

Ans 1: The structure of protein can be disrupted easily by heat,change in pH and under strongly oxidizing or reducing condition,Under such conditions the proteins undergo denaturation,The most familiar example of denaturation is the change that take place in albumin,the principle component of egg,white when it is cooked in,In this particular case the change is irreversible.

Question # 4

What are thermoplastics and thermosetting polymers?

Ans 1: Thermoplastics polymer: A thermoplastic polymer is one which can softened repeatedly when heated and hardened when cooled with a little change in properties. For example PVC pipes,plastics toys etc.
Thermosetting polymers:The polymer which becomes hard on heating and can not be softened again are called thermosetting polymers,A thermosetting polymers on heating decompose instead of melting For example synthetic ,varnish ,epoxy resins etc.

Question # 5

Give the classification of carbohydrates along with an example?

Ans 1: 1.Monosaccharides:
For example : glucose ,fructose ,glactose
2.Disaccharides or Oligosaccharises:
For example: Sucrose,lactose ,maltose

Question # 6

What are nucleosides and nucleotides?

Ans 1: Nucleosides : A nucleosidesus a combination of nitrogenous base with a sugar ,Depending upon the presence of ribo or deoxyribo ,nucleoside can either be a ribonucleoside or deoxyribonucleoside.

Nucleotides:Nucleotides are the organic molecule that serve as the monomer units for forming the nuclei acid polymer DNA or RNA,DNA carries the genetic information and RNA is involve inputting this information to work in the cell.

Question # 7

Write a note on Cholesterol?

Ans 1: It is the most abundant animal sterol occur in all animals tissues but it is only in a few higher plants,Cholesterol is present both in the free as well as esterified from in the blood,animals tissues ,egg an yolk,various and fatd and nerve tissue.

Question # 8

What is the difference glucose and fructose?

Ans 1: Glucose : Consists of aldehyde group and also called dextrose ,grape sugar or blood sugar ,occur naturally in both combines and free state ,Ib the free state it is present in most sweet fruits and in honey,Small quantity of glucose and also present in human blood and urine.
Fructose: consists of ketone group and is also found in combined and free states,It is used as a sweetening agent in confectionery and as substitute of cane sugar,

Question # 9

What are derived proteins?

Ans 1: They are the hydrolytic products of the above mentioned compounds,Sterols vitamin D and terpenes belong to this class of lipids.

Question # 10

What are epoxy resins?

Ans 1: The epoxy resin are fundamentally polymers but retain their name on the basic of the starting material and the presence of epoxide group in the poly,er.The epoxy resin is made by condensing epichlorohydrin with diphenylol propane.

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12th Class Fsc Chemistry Online Preparation for chapter 14 (Macromolecules)

Online Short Questions For Chapter 14 "12th Class Chemistry Chapter 14 Short Questions Preparation "

Chemistry - 12th Class Chemistry Chapter 14 Short Questions Preparation

Define Enzymes ,name their two properties?

Define condensation polymerization.

Explain denaturation of protein?

What are thermoplastics and thermosetting polymers?

Give the classification of carbohydrates along with an example?

What are nucleosides and nucleotides?

Write a note on Cholesterol?

What is the difference glucose and fructose?

What are derived proteins?

What are epoxy resins?

Prepare Complete Set Wise Questions For Chapter 14 "12th Class Chemistry Chapter 14 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

12th Class Chemistry Chapter 14 Short Questions Preparation - Set 1

Define Enzymes ,name their two properties?

Define condensation polymerization.

Explain denaturation of protein?

What are thermoplastics and thermosetting polymers?

Give the classification of carbohydrates along with an example?

What are nucleosides and nucleotides?

Write a note on Cholesterol?

What is the difference glucose and fructose?

What are derived proteins?

What are epoxy resins?

12th Class Chemistry Chapter 14 Short Questions Preparation - Set 2

What is the difference glucose and fructose?

Write the factor which affect the enzyme activity?

What is the degree of polymerization?

Briefly describe the simple protein?

What are polymers?Give two example.

Write down important use of lipids?

List 2 important use of proteins.

What is Rancidity of fats or oils?

What is copolymer?

What is PVC ?

12th Class Chemistry Chapter 14 Short Questions Preparation - Set 3

What are macromolecules?

What are polymers?Give two example.

List 2 important use of proteins.

What is copolymer?

What is chemical nature of enzyme?Classify them.

Write any difference between DNA and RNA?

Write importance of epoxy resin?

Write down the physical properties of Lipids.

Name different types of proteins on the basis of physcio-chemical properties.

What happens when the hydrolysis of triglyceride is carried out?

12th Class Chemistry Chapter 14 Short Questions Preparation - Set 4

Explain denaturation of protein?

What is PVC ?

Give two differences between Oil and fats?

How the degree of polymerization helps to determine the molar mass of the polymer?

What is chemical nature of enzyme?Classify them.

List 2 important use of proteins.

What is the difference glucose and fructose?

Define condensation polymerization.

Write importance of epoxy resin?

What are macromolecules?

12th Class Chemistry Chapter 14 Preparation

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