(a) Name three acids used in the laboratory.
(b) Name one indicator that turns red on adding a base.
(c) Name the reaction when an acid is mixed with a base.
(d) Write the name of two indicators that occur naturally.
(e) Name three types of salts. Give one example of each type of salt.
Name the diseases based on chronic cell changes occurring over time?
Name the different categories of microbes naturally occurring in sewage water. Explain their role in sewage water treatment.