Question

Q-2 Explain the difference on the basis of properties (9)

(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

1] thermosets are plastics which don't remould or melt on heating whereas thermoplastics are recyclable or moldable and can melt easily. eg.s of thermosetting plastic is bakelite and melamine and eg. for thermoplastic is pvc, polythene

2] metals are ductile malleable,sonorous, are good conductor of electricity&heat and has a high melting& boiling point however non-metals lack those physical prop. mentioned above. eg.s for metals are iron,copper,gold, for non-metals- oxygen,hydrogen ,co2

3] useful microbes are those which help us in day-to day life. for eg.lactobacillus,rhizobium bacteriaand saccharaomyces crevisae whereas harmful microbes are the ones which can cause disease and eg.s are salmonella typhi..

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Answer 2

Explanation:

I hope it will be help full for you