Plastics - class-XI
Description: plastics | |
Number of Questions: 89 | |
Created by: Avani Handa | |
Tags: manmade materials synthetic fibres and plastics man made materials polymer chemistry zoology derivatives of hydrocarbons environmental issues dealing with garbage chemistry fibres and plastics garbage in, garbage out materials biology |
Which of the following is not a characteristic of thermosetting polymers?
Which among the following is a cross-linked polymer?
Which of the following polymers does not involve cross-linkages?
Match the column I with column II and mark the appropriate choice.
Column I | Column II | ||
---|---|---|---|
(A) | Buna-S | (i) | Thermosetting |
(B) | Polyamides | (ii) | Fibres |
(C) | Polyvinyls | (iii) | Elastomers |
(D) | Urea-formaldehyde | (iv) | Thermoplastics |
Teflon is a special plastic on which oil and water do not stick.
Cooking pans have plastic handles.
Plastics are generally good conductors of electricity.
Plastics are mainly used by everyone because :
Plastic containers can resist decomposition for:
Which of the following takes so many years to degrade?
We come to a conclusion, that plastics are bad conductors of electricity from the followings:
Which of the following substance is bio-degradable?
These processes can be used to prevent health hazards of plastics :
Burning of plastic causes:
Like synthetic fibres, plastic is also a:
What are the two types of arrangement in plastics ?
Which of the following statement is true about PVC (polyvinyl chloride) and polythene?
A material which is not easily decomposed by natural processes is termed as :
Which of the following are uses of plastics in health care industry?
Why plastic containers are favoured for storing food?
Like synthetic fibres, plastic is also a :
Most of the thermoplastic :
Containers which are light weight, lower price, good strength and easy to handle is made up of :
Which plastic is commonly used as carry bags?
Plastic is a polymer consisting of:
Which plastic is called a fire proof plastic?
Which of the following statement is true about thermosetting plastic?
Why is plastic used in covering of electrical appliances?
Plastic can be used as :
Handles of most pans are made up of:
The world's first fully synthetic plastic was:
Which of the following are the advantages of plastic over metals?
1. Plastics are lighter.
2. Plastics are usually cheaper.
3. Plastics are inert to both acids and alkalis.
Nylon is obtained by:
Bakelite is an example of ___.
Polystyrene and PVC are thermoplastics.
Which of the following will be suitable for coating dress materials of fire - men ?
Consider the following statements-
I. weakest intermolecular forces are present in elastomers.
II. Fibers possess a crystalline nature.
III. Ionic bonds are present in thermoplastic polymers.
Select the correct option from the following:
Thermosetting plastics cannot be softened by heating because:
Which of the following properties of plastic make it most convenient to use?
Which one among the following is a thermosetting plastic?
Which of the following is not correct regarding terylene ?
Which of the following is NOT true?
Which of the following is a property of plastic?
Coating of melamine plastic is used as :
Plastics which when moulded once, cannot be softened by heating are called :
Which material is used for making:
(i) Saucepan handles
(ii) Electric plugs/switches/plugboards
What characteristic property of plastic makes it useful in making containers for storing food items?
An example of thermosetting plastic, which is also a poor conductor of electricity, is:
Statement: The articles made of thermoplastics can be recycled whereas the articles made of thermosetting plastics cannot be recycled.
A person has to make electric switches and plugs. Which material is recommended ?
Match the column A and B
Column A | Column B |
---|---|
(i) Thermoplastics | (a) Handles of utensils, floor tiles |
(ii) Thermosetting plastics | (b) Melamine |
(iii) Biodegradable | (c) Teflon |
(iv) Fire proof plastic | (d) Wood |
(v) Oil and water do not stick | (e) Combs, containers |
Thermoplastics are:
Which of the following is a thermosetting plastic?
Which of the following is used to make disposable cups?
Thermosetting plastics can be remoulded on gentle heating.
Synthetic fibers are obtained from which of the following?
State true or false.
Which of the following is considered the first thermoplastic?
Which of the following is a thermosetting process?
State true or false.
Which of the following example is not a thermoset plastic?
Which among the following is a poor conductor of heat and electricity?
_______ provides good heat and sound insulation.
Define plasticity :
Plastics are ____________ in water.
When plastics are burnt toxic substances are released into air causing ___________ pollution.
We come to a conclusion, that plastics are bad conductors of electricity from the following.
Which of the following is/are reasons of using plastics?
1.They are transparent.
2. They are cheap.
3. They can be moulded into diffrent shapes.
Fibre obtained by chemical treatment of wood pulp is called:
Which is NOT the general characteristics of plastics?
The IUPAC name for Teflon is:
Teflon constitutes:
Which of the following is thermosetting polymer?
Three-dimensional molecules with cross-links are formed in the case of a:
Garden chairs made of plastic strips and plastic articles get faded, worn out and cracked in sunlight, mainly because of:
Which of the following are not thermosetting polymers ?
Statement: Plastics which get deformed easily on heating and can be bent easily are known as thermoplastics.
Plastics are capable of molding and casting into various shapes and size plastic.
When plastics are burnt toxic substances are released into the air causing water pollution.
Substances which cannot be decomposed by micro-organisms are called non-biodegradable substances.
Plastics are eco-friendly.
Which of the following is non-biodegradable?