Question

answer the following question in one word or one sentence :
1.name the chemical which kill or stop the growth of pathogens .
2.is spoiling of food a chemical reaction?
3.what is food preservative?
4.name the first antibiotic and who discovered it .
5.state an important function performed by blue- Green algae.
6.name two leguminous plant that can fix nitrogen .​

Answer 1

Answer:

1.Bleach or phenol is the chemical that stops the growth of pathogens

Answer 2

1.anticeptic, disinfectant

2. yes

3. the chemical subtances which prevent food from oxidation

4. penicillin "Alexander Fleming"

5. add oxygen in primitive earth

6. beans, pea

according to me