Name two chemicals used to disinfect water.

Study the following statements about ozone: a) It is essential for breathing of living organisms. b ) It is used to disinfect water. c ) It absorbs ultraviolet rays. d ) Its proportion in air is about 3 % Which of these statements are correct?

Name one disinfectant.

Name the chemical used for grinding of animal tissue for chemical analysis organic compounds.

Name two carps used as food fishes.

Name two toxic chemicals present in tobacco smoke.

Name the chemical released during allergy.

Name the compound of calcium used for disinfecting drinking water. Give its chemical formula.