Question

Q-2
Explain the difference on the basis of properties
(1) Thermosetting plastics and thermoplastics.
(2) Physical properties of metals and non metal physical properties.
(3) Useful micro organisms and harmful micro organisms.​

Answer 1

Explanation:

1. The primary difference between the two is that Thermoset is a material that strengthens when heated, but cannot be remolded or heated after the initial forming, while thermoplastics can be reheated, remolded, and cooled as necessary without causing any chemical changes.
2. Metals Non-metals
3. Good conductors of electricity Poor conductors of electricity
4. Good conductors of heat Poor conductors of heat
5. High density Low density
6. Malleable and ductile Brittle
7. Type Useful microorganisms Harmful microorganisms
8. Algae Anabaena (biological nitrogen fixation) blue-green algae and red tides (produce toxins)
9. Protozoa Paramecium (kills harmful bacteria) Plasmodium (malaria fever)
10. Virus polio, chicken pox (to make vaccines) HIV (causes AIDS

Answer 2

Answer:

1) Thermosetting

Explanation:

thermosetting Polymers are rigid polymers. during their formation they have property of being shapped on heating but they get hard need while hot once had this become infusible while cannot be softned by heating and therefore cannot be remolded this characteristic is the result of extensive cross linkage by covalent bonds format in the mouth during hardening setting process while hot for example: bakelite ,urea ,formaldehyde resign

2) thermoplastincs

EXPLANATION: plasticity is the property of being easily shaped aur mounted thermoplastic Polymers are capable of repeated software running on heating and hardening on cooling these Polymers possess moderately strong intermolecular forces that are intermediate between store elastomers and fibres for example: polythene polystyrene polyvinyl etc