1. Name the metals that are good conductors of electricity.
2. Why is copper used to make wires for electrical fitting?
3.
State at least two uses of nitrogen gas.

1 iron

2because copper is good conducter of electricity

3.1 for making fertilizer

2for making ammoina gas

1. a) Silver

b) Copper

c) Gold

d) Aluminium

e) Brass

f) Zinc

g) Nickel

h) Iron

i) Tin

j) Phosphor Bronze

k) Steel

l) Lead

m) Nickel Aluminium Bronze

2. Reason why copper wires used for electrical fittings:-

● Excellent Conductor of Electricity

● Very Ductile Metal

● Favorable Chemical Properties

● High Temperature Tolerance

● Global Standard

● Abundant Quantity

● High Conductivity

● Inexpensive

● High Ductility

3. Nitrogen is important to the chemical industry. It is used to make fertilisers, nitric acid, nylon, dyes and explosives.

d is the correct answer

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia