iv. Explain the step scouring in processing of wool.
v. List the various stages of life cycle of silk moth
vi. Explain the term conduction.
vii. Give one application of crystallization.
viii. Define conductor of heat. Give two e.g. also.
ix. What is acid rain?
x. Explain the movement of chest cavity during inhalation.
Answers
Answer:
acid rain men's it's is formed by bad mixture
it's harms for the monuments
Answer:
4. The term scouring is generally used to describe a process that remove contaminate from raw wool and include all steps associated with the process___ blending, opening, washing, dying, packaging and the step cleaning up the effluents produced
.
5. The life cycle of a moth starts when a female silk moth lays eggs. The caterpillar or larva hatched from the egg of a silk moth. The silkwarms feed on mulberry leaves and give rise to pupa. In the pupa stage, a weave is netted around by the silkwarms to hold itself.
6. The transfer of heat between two parts of a stationary system caused by a temperature difference between the parts transmission through a conductor.
7. crystallization is used for clean water when the water is salty then it is purifying the water.
8. materials which allow to pass the heat that is called conductor of heat. and it is also known as good conductor of heat . example_ silver, copper, aluminium.
9. rain that has harmful chemicals it in from factories etc that causes damage to tress, building , crops etc.
10. during inhalation the contraction and relaxation of muscle act to change the volume of the thoracic cavity. as the thoracic cavity and and the lungs move together this change the volume of the lungs. in turn changing the pressure inside the lungs.