4. Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
Options
A. Exact concentration of solution is not given
B. Character of semi permeable membrane is not given
C. The flow of solution is not possible through semi permeable membrane
9. One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?
Options
A. Having waited a day, it is too late to take an antibiotic
B. You need an antiseptic, not an antibiotic
C. You need to be vaccinated instead of taking an antibiotic