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:

the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment.

Answer 2

Answer:

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