Question

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

Answer 1

Answer:

metals : 1) good conductor of heat and electrcity

2) high density 3) mellable and ductile

non metals : 1) poor conductor of heat and electricity

2) low dencity

3) brittle

Answer 2

Answer:

1&2

Explanation:

There are following physical properties of metals

1:- They are good conductors of heat and electricity.

2:- They are sonorous means they produce a ringing sound when they beat

3:- They are ductile means they can convert into a wire.

4:- They are Lusture means they are shiny.

5:-They are malleable means they can convert into a sheet.

6:- Generally they have high melting points and low density.

There are following physical properties of non- metals and they have just opposite properties of metals

1:- They are bad conductors or Insulators of heat and electricity

2:- They are non-sonorous.

3:- They are non-ductile.

4:- They are non-Lustur or dull

5:- They are non malleable or brittle and can break on beating.

6:- Generally they have low melting point and low density.

Examples of useful microbes

1:- Licane:- It is a group of some fungi which is used to determine any liquid that is a acid or base.

2:- Penciline fungus:- It is used make antibiotics.

3:- Some fungus are major source of citric acid which is vitamin C.

4:- Some microbes helps in ecosystem.

5:- some microbes helps in digestion.

6:- Some microbes helps in nitrogen fixation in soil.

7:- Some microbes helps as cleaner because they decompose waste materials

Examples of harmfull microbes

1:- Some microbes cause disease like as virus, bacteria, fungus, protozoan,

2:-virus:- virus causes

measles.

rubella.

chickenpox/shingles.

roseola.

smallpox.

fifth disease.

chikungunya virus infection.

3:- fungus:-Some fungus causes skin ringworm(daad) etc

4:- Bacteria:- bacterias cause tuberculosis (TB), diarrhea etc.

5:-Protozoan:- some protozoan like as plasmodium proztozoa cause maleria etc.