Dilution Techniques Quiz

What is the definition of 'Dilution'?

• A process of increasing the concentration of a solute in solution.

• A technique for mixing two solutes.

• A process of reducing the concentration of a solute in solution.

• A method of measuring the volume of a solution.

Which term refers to the substance dissolved in a solution?

• Solvent

• Dilution

• Solute

• Aliquot

What is the formula used to calculate dilution?

• C1 / V1 = C2 / V2

• C1 + V1 = C2 + V2

• C1 * V1 = C2 * V2

• C1 V1 = C2 V2

In a 1:10 dilution, what is the total dilution factor after 2 steps?

• 1:1000

• 1:10000

• 1:100

• 1:10

How much stock solution is needed to prepare 50 mL of 0.5 M NaCl from a 5 M stock?

• 5 mL

• 10 mL

• 20 mL

• 15 mL

What is the cumulative dilution after the first step of a 1:5 serial dilution starting from 100 mg/mL?

• 40 mg/mL

• 100 mg/mL

• 20 mg/mL

• 80 mg/mL

If you add 2 mL of dye to 18 mL of water, what is the dilution factor?

• 1:5

• 1:10

• 1:20

• 1:15

What is the dilution factor for Tube 3 in a 1:2 serial dilution after 3 steps?

• 1:4

• 1:8

• 1:16

• 1:32

Why is serial dilution preferred over a large one-step dilution?

• It is faster.

• It is easier to perform.

• It reduces pipetting error and provides more accuracy.

• It requires less equipment.

What happens if you forget to mix the solution before transferring during a serial dilution?

• The dilution factor will increase.

• The solution will not change.

• The resulting concentration in the next tube will be incorrect.

• The solution will become too concentrated.