Preparation of Solutions
Chemistry ⇒ Solutions and Colloids
Preparation of Solutions starts at 9 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Preparation of Solutions.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A student accidentally uses 100 mL of water instead of 250 mL to dissolve a solute for a 0.1 M solution. What will be the effect on the concentration?
Describe the difference between a stock solution and a working solution.
Describe the importance of using a clean and dry volumetric flask in solution preparation.
Describe the precautions to be taken while preparing a solution from a hygroscopic solute.
A chemist needs to prepare 1 L of 0.05 M HCl from a 1 M stock solution. What volume of stock solution is required?
A chemist needs to prepare 250 mL of 0.1 M AgNO3 solution. Calculate the mass of AgNO3 required. (Molar mass = 170 g/mol)
A laboratory technician needs to prepare 250 mL of 0.2 M NaOH solution. Calculate the mass of NaOH required. (Molar mass of NaOH = 40 g/mol)
A solution is prepared by dissolving 5 g of glucose (C6H12O6, molar mass = 180 g/mol) in enough water to make 100 mL of solution. Calculate its molarity.
Which glassware is most suitable for preparing a solution of known volume accurately? (1) Beaker (2) Measuring cylinder (3) Volumetric flask (4) Conical flask
Which of the following is a characteristic of a secondary standard solution? (1) It is less pure than a primary standard (2) It is used to standardize other solutions (3) It is always prepared from a gas (4) It is not affected by air or moisture
Which of the following is a reason for using a volumetric flask in solution preparation? (1) It allows for heating (2) It provides precise volume measurement (3) It is used for titration (4) It is used for filtration
Which of the following is NOT a precaution when preparing a solution? (1) Use clean apparatus (2) Use tap water (3) Avoid parallax error (4) Use analytical balance for weighing
Fill in the blank: The _______ is the lowest point of the curved surface of a liquid in a measuring cylinder or volumetric flask.
Fill in the blank: The _______ is used to transfer a fixed volume of liquid accurately during solution preparation.
Fill in the blank: The _______ of a solution is defined as the number of moles of solute per kilogram of solvent.
Fill in the blank: The equation used to calculate the volume of stock solution needed for dilution is _______.
True or False: A primary standard substance must be highly pure, stable, and have a known formula.
True or False: The accuracy of a solution's concentration depends on the purity of the solute and the precision of measurements.
True or False: The concentration of a solution can be expressed in molarity, molality, or normality.
True or False: The final volume of a solution should be measured after the solute has completely dissolved.
