Question

When hot water is poured into some plastic bottles they get deformed easily .On
the other hand,there are some plastics which moulded once cannot be softened
again.
a)Draw a diagram to show the arrangement of units in each case.
b)A material X is a thermosetting plastic .It is a poor conductor of electricity and
used for making electrical switches. Identify X and give it’s one more use.
c)’Plastic is a necessary evil’. Justify the statement by giving one example. 5 marks

Answer 1

Answer:

Aerobic respiration and fermentation are two processes which are used to provide energy to cells. In aerobic respiration, carbon dioxide, water, and energy in the form of adenosine triphosphate (ATP) is produced in the presence of oxygen. Fermentation is the process of energy production in the absence of oxygen