Polymers and macromolecules - class-VII
Description: polymers and macromolecules | |
Number of Questions: 38 | |
Created by: Saurabh Mittal | |
Tags: synthetic fibres and plastics polymer chemistry materials of daily use animal fibre occurrence of carbon compounds in nature fibres and plastics chemistry fibre to fabric natural fibres carbon compounds fibre to fabric: animal fibre |
Synthetic fibres are obtained by :
Synthetic fibres are better than natural fibres because :
Explain why synthetic fibers are cheaper than natural fibers?
Which of the following synthetic fiber is used in aerospace?
State True or False.
Synthetic fibres do not melt on heating.
What cloth should you wear while cooking in the kitchen?
Polycot is a mixture of_____________.
Why is it not advisable to wear synthetic clothes while bursting fire crackers?
Which among the following does not belong to synthetic fibres?
_______ are manufactured from a mixture of two or more different type of fibers.
Synthetic fibers are made by :
Which of the following is a disadvantage of synthetic fibre?
Cellulose dissolved in a mixture of sodium hydroxide (NaOH) and carbon disulphide produces :
To which of the following does the $4$R principle apply the most?
Artificial fibres is the other name given to ____________.
The first synthetic thermosetting plastics is :
This is the synthetic fibre :
These are the synthetic materials which we come across in our daily life :
Commonly used synthetic fabrics are:
Synthetic fibres are made using __________ as raw materials.
__________ is a synthetic fibre used for making artificial woollen clothes.
Which of the following changes came regarding dressing styles after 18th century?
State True or False :
Match the column I with column II and mark the appropriate choice.
Column I | Column II | ||
---|---|---|---|
(A) | Natural polymer | (i) | Rayon |
(B) | Addition polymer | (ii) | Bakelite |
(C) | Copolymer | (iii) | Silk |
(D) | Semi-synthetic polymer | (iv) | Neoprene |
Which of the following is not a natural polymer?
The naturally occurring polymer among the following is:
Cellulose is a polymer of:
The S in Buna- S refers to:
Among the following, a natural polymer is____________.
The soft silk yarn is as strong as compared to:
Which of the following is not an example of natural polymer?
______ and ______ yields wool found in South America.
The acrylic polymer must contain :
State True or False.
Which of the following is not a synthetic polymer?
Acetate rayon is prepared from _____.
Which of the following is not a synthetic polymer?