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1
______________ are called biodegradable substances.
Cloth
Thermosetting plastic
Thermoplastic
PVC pipes
2
Teflon is a special plastic because it is used :
For making handles of screw drivers
For packing of tablets
For non - stick coating on cookware's
For making doctor's gloves
3
Material that can be moulded or formed into different shapes is called _______________
Polymer
Plastic
Synthetic fibre
None of these
4
Burning of plastic causes :
Water pollution
Air pollution
Sound pollution
All of the above
5
Parth one day thought to clean his messy room while cleaning , he found items like old T-shirts, Cable wire, cycle tyres, bottle of shaving foam, table cloth, broken toys, pain killer strips, stop cork of glass bottle and tube of face wash.
Which of the following comes under the category of plastic?
Pain killer strips
Cycle tyre
Broken toys
Old T-Shirts
6
_________ plastics cannot be remoulded again on heating.
Thermosetting
PET
PVC
7
Cloth or paper bages are encouraged for use by us. Which of the following is a reason for imposing ban on plastic bags ?
They are degradable
They are of non - recyling nature.
They are the cause for pollution when burnt.
They are non biodegradable.
8
Which plastic material is used to make non-stick pans?
Teflon
Nylon
Rayon
All of these
9
The first man-made plastic was created by ______________ .
Alexander Park
Thomson
Rutherford
None of these.
10
A brief information about three different plastics is give below:
X: Thermoplastic which can be rolled into sheets
Y: Thermoplastic which is used as covering for electric wires.
Z: Thermosettings which used for making plugs and switches.
Identify which is Z?
Polythene
Polyvinyl chloride
Bakelite
11
The most suitable material for the preparation of handles of cooking utensils is __________
12
Which of the following is used in automobile battery casings ?
HDPE
PP
Polyester
13
Which of the following applications of plastics shows that plastics are bad conductors of electricity ?
i. Refregerators have an insulting wool of plastics.
ii. Electric wires have a plastic coating.
iii. Chemicals are stored in plastic containers.
iv. Parachutes are made of plastic.
ii only
i only
i and iii only
iii and ii only
14
Which of the following are correct ?
(a) Most plastics are inflammable, they catch fire easily.
(b) Plastics do not corrode.
(c) Plastics are much lighter in weight as compared to wood, metals etc.
Only (a) and (b) is correct.
Only (b) and (c) is correct.
All of these.
15
(a) The first man - made plastic was created by Alexander parks .
(b) Plastics have much less toughness as compared to metals & Alloys like steel .
(c) Plastics are much lighter in weight as compared to wood, metals etc .
Only (a) and (b) is correct .
Only (b) and (c) is correct .