Question

49. Solution of known concentration
a) Standard solution
b) Concentration
c) Solution
d) Concentrated solution​

Answer 1

Explanation:

b) Concentration

Hope its help..

Answer 2

Answer:

The answer is letter B

Solutions of known concentration can be prepared either by dissolving a known mass of solute in a solvent and diluting to a desired final volume or by diluting the appropriate volume of a more concentrated solution (a stock solution) to the desired final volume.

(I'm from Philippines btw)