4. Most of the liquid solutions we buy in the supermarket is expressed in %
concentration. Which of these best explains the use of % by volume of a
solution (v/v)?
A. When the given solute and solvent are both solids.
B. When the given solute and solvent are both liquids.
c. When the given solute is liquid, and solvent is solid.
D. All of these explains the use of % by volume as long as its homogeneous

5. This pandemic, the Department of Health advised us to use in what
concentration of commercial rubbing alcohol to kill bacteria and certain viruses on our hands ?
A. 5 %
B. 40 %
C. 60 %
D. 70 %


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