Worksheets8th CDF-02 CBSE
Total questions: 14
Worksheet time: 7mins
___________ are water resistant.
Natural fibres
Synthetic fibres
Both Natural and synthetic fibres
None of above
____________ has the highest water absorbing capacity.
Cotton
Jute
Rayon
Nylon
_____________ is a versatile synthetic material and it is a polymer.
Plastic
Cotton
Jute
Rayon
Plastic that can be easily bent with the effect of heat are called _____________
Thermoplastics
Thermosetting plastics
Rayon
None of above
Plastics that once moulded cannot be softened by heating are called __________
Thermoplastics
Thermosetting plastics
Nylon
None
_______ is non-reactive, light, strong, durable and poor conductor of heat and electricity
Jute
Cotton
Plastic
Rayon
____________ has the highest capacity of heat resistance.
PVC
Nylon
Bakelite
Melamine
__________ is used for making handles of utensils and most electrical fittings.
PVC
Melamine
Bakelite
Polythene
Most common polystyrene is __________
Terylene
Thermocol
Teflon
Bakelite
_________ is popular polyester.
Terylene
Thermocol
Teflon
Bakelite
_________ is used for non coating of utensils.
Terylene
Thermocol
Teflon
Bakelite
5R principles: - Reduce, Reuse, Recycle, Recover and ________
Restore
Refuse
Refund
None of above
PVC and polythene are example of ____________
Teflon
Thermosetting plastics
Thermoplastics
None
Bakelite and Melamine are examples of _______________
Thermoplastics
Thermosetting plastics
Polyester
None
