Question

4. If three 10 ml syringes A, B and C are taken and their nozzles closed by

inserting a rubber cork. The space inside the syringes is filled with water, air and

common salt respectively and then pistons pushed back into the syringes after

applying a little of vaseline for smooth movement. On compressing, the piston A

moves easily in first syringe and B moves very slowly, almost negligibly.

a) Are the above mentioned observations correct?

b) Justify your answer of part a) according to property of respective substances

filled.​

Answer 1

Answer:

Human actions like excessive use of fertilisrs and other chemicals are the causing death if useful bacteria and fungi. if it continues we humans have to suffer a lot. ... bacterial helps in decaying organic waste of bacteria are less means it will not decay properly and it may causes diseases.