Question 12 An unripe mango placed in a concentrated salt solution to prepare pickle shrivels because .............. . (a) it gains water due to osmosis (b) it loses water due to reverse osmosis (c) it gains water due to reverse osmosis (d) it loses water due to osmosis
If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to ___ of copper.