_______ is extensively used to kill harmful bacteria.
Disinfectants:
(1) These are extensively used to kill harmful bacteria.
(2) Chlorine, iodine and phenol are a few examples.
Therefore, chlorine is extensively used to kill harmful bacteria.
Write notes on :
(a) mitochondria (b) antibiotics
(c) harmful bacteria (d) useful bacteria
Quartz is extensively used as a piezoelectric material, it contains