there is a large group of materials P which all the divided into three groups Q ,R and S on the basi
Channel: Doubtnut
Date: 2020-01-26

there is a large group of materials P which all the divided into three groups Q ,R and S on the basis of their properties ,THe substance belonging to group Q can be solids liquids or gases ,The solids belonging to group Q arae usually electrical insulators Most of the substance of groups R are solids which are good like R. the properties of s are intermediate between those of Q and R. (a) what could the group of materials Pbe ? (b) Name the substance Q GIve two example of such substance. (c ) Name the substance R write two example of such substance . ( D) Name the substance S . Give two example of such substance . ( e) out of Q ,R and S , which substance are malleable and ductile ?