0.4B Answer the following (any 3) (9 M)
1. Distinguish between : Metals and Non-
metals
II. Explain with the help of a diagram how
the intensity and direction of the magnetic
field of a bar magnet can be determined
ill. A person is suffering from acidity. What
Answers
1.
Metals:
Metals are solids at room temperature.Except for mercury which is a liquid metal.
Metals are strong and tough.
Metals are malleable and ductile.
Metals are good conductors of heat and electricity.
Metals are lustrous and can be polished.
Non Metals
Non- metals are brittle (break easily). They are neither malleable nor ductile.
Non-metals are bad conductors of heat and electricity. Except for graphite which is a good conduction of electricity.
Non-metals are non-lustrous (dull) and cannot be polished. Except for iodine
Non-metals may be solid, liquid or gases at the room temperature.
Non-metals are not strong or tough.
II. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. ... A magnetic north pole will attract the south pole of another magnet, and repel.
