6.Write one difference between the following:
a. Plant fibres and animal fibres
b. Merino wool and angora wool
c. Sorting and scouring
d. Moulting and reeling
7. Do you think it is safe to wear nylon clothes while bursting crackers on Diwali?
8. What are occupational hazards? How can be they prevented?
Answers
Answer:
a . Animal fibre is a fibre that we get from animals. the difference between plant fibre and animal fibre are plant fibres is obtained from the plants while the animal fibres are obtained from animal. Plants fibres examples are cotton and jute while the animal fibre examples are wool and silk .
b.The angora wool is silky and cold and is more yielding to the human body, whereas the merino type of wool is very warm and silky. Angora's wool comes from downy coat of angora rabbit is a combination of angora sheep's wool and rabbit hair, while the merino type of wool is made up of only Merino sheep.
c . Scouring is washing of fleece to remove dirt, grease etc. Sorting is separating different types of wool. Sorting is the method of removal of inferior wool. whereas Scouring is the removal of dirt,grease,lanolin,etc by washing the wool in hot water with detergent such as soda ash and then drying.
d Answer: Moulting- the process of shedding the skin , to grow a New one by insects, like a caterpillar. Reeling- it is a method of obtaining silk fibers from the cocoon's.
7. It is not safe to wear nylon clothes while bursting crackers while diwali because nylon is a cloth whichtends to catch fire easily. So it is safer to wear a cloth except polyester and nylon as they both catch fire easily and stick to our body.
8. Workers employed in the industries often suffer from various kinds of ailments. This are called occupational hazards. They can be prevented: Reduce Noise at Your Workplace. ...
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Answer:
(i)Plant fibres are the fibre which are obtained from plants whereas, Animal fibres are fibres which are obtained from animals.
EXAMPLES: Plant fibres - Silk, Jute
Animal fibres - Nylon, Rayon
(ii)Angora wool comes from downy coat of angora rabbit is a combination of angora sheep's wool and rabbit hair, while the merino type of wool is made up of only Merino sheep.
(iii)Sorting is the method of removal of inferior wool. whereas Scouring is the removal of dirt,grease,lanolin,etc by washing the wool in hot water with detergent such as soda ash and then drying.
(iv)Moulting is the process of shedding the skin , to grow a New one by insects, like a caterpillar. Whereas, Reeling is a method of obtaining silk fibers from the cocoon's.
7. The activity described above isn't safe because nylon is a synthetic fibre that catches fire easily and sticks to the body of the person wearing it. o it is safer to wear a cloth except polyester and nylon as they both catch fire easily and stick to our body.
8. An occupational hazard is a hazard experienced in the workplace. Occupational hazards can encompass many types of hazards, including chemical hazards, biological hazards (biohazards), psychosocial hazards, and physical hazards.
Prevention Methods:
(i)Try to Reduce Environmental Stress
(ii)Reduce Noise at the Workplace
(iii)Conduct Regular Checks and Mock Drills
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