Questions
Bed sheets are made up of:
- rayon and wool
- rayon and plastic
- rayon and nylon
- rayon and cotton
Which of the following is a disadvantage of nylon?
- They do not shrink
- They are less resistant to sun light
- They are resistant to insects and molds
- They can be easily dyed
The fibres of nylon is stronger than :
- steel wire of same thickness
- steel wire of different thickness
- plastic fibres
- rayon
The fibre which gives smell of plastic is:
- rayon
- silk
- wool
- nylon
Which of the following statement is true?
- A nylon thread is stronger than a steel wire
- Rayon is a natural fibre made from wood pulp
- Cotton is not a polymer
- Fabric made from polyester can get wrinkles easily
Nylon fibre is useful, because of following properties:
- soft, strong and light
- transparent, light and easy to wash
- strong, elastic and light
- hard, inexpensive and strong
A silk saree and a nylon saree, both of same length are put to dry under sun. Which one will dry faster?
- Silk saree
- Nylon saree
- Both will take same time
- Depends on weather condition
Ropes made of nylon and polyester are commonly used in cranes and elevators because :
- Nylon is inflammable
- It is a good conductor of heat and electricity
- It is very strong, fairly elastic and light weight
- It is heat resistant
Rayon is different from synthetic fibres because :
- it has a silk appearance
- it is obtained from wood pulp
- it can also be woven like those of natural fibres
- it is natural
Synthetic fibres having almost common property are:
- nylon and polyster
- nylon and plastics
- polyster and plastics
- all of the above
Which of the following statements is incorrect?
- Nylon clothings can with stand high temperature and are, therefore, good to wear in summers.
- Thermosetting plastics do not become soft on heating.
- Addition polymers are formed without the elimination of byproduct molecules.
- Natural rubber is obtained as latex from rubber trees.
Read the following statement and mark the correct answer.
I. Artificially prepared synthetic fibre which resembles silk is known as terylene.
II. Rayon is not considered as a synthetic fibre as it is regenerated from cellulose.
III. PET bottles and jars are made up of polyesters.
- Statement I is false, II and III are true
- Statement I is true, II and III are false
- Statement I and II are false, III is true
- Statement II is true, I and II are false
The fibre developed in Newyork & London simultaneously is known as:
- rayon
- silk
- PVC
- nylon
The fibre obtained from cellulose is:
- polyester
- nylon
- acrylic
- rayon
Nylon is an example of thermoplastic.
- True
- False
Rayon is:
- natural silk.
- artificial silk.
- regenerated fibre.
- synthetic fibre.
_________ is stronger than steel wire.
- Cotton fibre
- Silk thread
- Plastic thread
- Nylon fibre
The material similar to silk in appearance is :
- nylon
- rayon
- polyester
- terylene