Question

A brief information about a few substances is given as : P) Hard, insoluble in water, lower density than water, opaque Q) Shiny, opaque, higher density than water, smooth to touch R) Hard, transparent, insoluble in water, higher density than water S) Non-lustrous, lower density than water, bad conductor of heat and electricity P, Q, R and S could be respectively​

Answer 1

Answer:

sorry don't know the answer