EASY
12th ICSE
IMPORTANT
Earn 100

What type of polymerisation takes place in the formation of the polyester?    

Important Questions on Polymers

EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 48
Give any one example of a cross-linked synthetic polymer.
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 49
How does the presence of double bonds in rubber molecules influence their structure and reactivity?
EASY
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 51
Shyam went to a grocery shop to purchase some food items. The shopkeeper packed all the items in polythene bags and gave them to Shyam. But, Shyam refused to accept the polythene bags and asked the shopkeeper to pack the items in paper bags. He informed the shopkeeper about the heavy penalty imposed by the government for using polythene bags. The shopkeeper promised that he would use paper bags in future in place of polythene bags.
Answer the following question : Why did Shyam refuse to accept the items in polythene bags?
 
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 52
A monomer of a polymer upon ozonolysis gives one mole of methylglyoxal and two moles of formaldehyde. Identify the monomer of the polymer.
 
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 52
A monomer of a polymer upon ozonolysis gives one mole of methylglyoxal and two moles of formaldehyde. Give its free radical mechanism of addition polymerisation.
 
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 53
Phenol and formaldehyde undergo condensation to give a polymer (A) which on heating with formaldehyde gives a thermosetting polymer (B). Name the polymers. Write the reactions involved in the formation of (A). What is the structural difference between two polymers?
 
MEDIUM
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 2
Among the following polymers the strongest molecular forces are present in
HARD
12th ICSE
IMPORTANT
All In One ISC Chemistry Class 12>Chapter 15 - Polymers>Chapter Practice>Q 4
Arrange the following polymers in the decreasing order of their intermolecular forces : Nylon, Buna-S, polythene.