Assertion and Reasons of Solutions MCQ Basic Level

Assertion and Reasons of Solutions MCQ Basic Level

Dear Readers,

Compared to other sections, Chemistry is considered to be the most scoring section. If prepared thoroughly, chemistry can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1. Assertion : One molal aqueous solution of urea contains 60g of urea in 1kg water.
  Reason : Solution containing one mole of solute in 1000g solvent is called as one molal solution.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true and the reason is the correct explanation of the assertion.

Q2. Assertion : Azeotropic mixtures are formed only by non-ideal solutions and they may have boiling points either greater than both the components or less than both the components.
  Reason : The composition of the vapour phase is same as that of the liquid phase of an azeotropic mixutre.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true but reason is not the correct explanation of the assertion.

Q3. Assertion : Molecular mass of polymers cannot be calculated using boiling point or freezing point method.
  Reason : Polymers solutions do not possess a constant boiling point or freezing point.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If assertion is true but reason is false.

Q4. Assertion : The molecular weight of acetic acid determined by depression in freezing point method in benzene and water was found to be different.
  Reason : Water is polar and benzene is non-polar.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true and the reason is the correct explanation of the assertion.

Q5. Assertion : Reverse osmosis is used in the desalination of sea water.
  Reason : When pressure more than osmotic pressure is applied, pure water is squeezed out of the sea water through the membrane.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true and the reason is the correct explanation of the assertion.

Q6. Assertion : Camphor is used as solvent in the determination of molecular masses of naphthalene, anthracene etc.
  Reason : Camphor has high molal elevation constant.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If assertion is true but reason is false.

Q7. Assertion : Elevation in boiling point and depression in freezing point are colligative properties.
  Reason : All colligative properties are used for the calculaltion of molecular masses.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true but reason is not the correct explanation of the assertion.

Q8. Assertion : The boiling and melting points of amides are higher than corresponding acids.
  Reason : It is due to strong intermolecular hydrogen bonding in their molecules.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true and the reason is the correct explanation of the assertion.

Q9. Assertion : The freezing point is the temperature at which solid crystallizers from solution.
  Reason : The freezing point depression is the difference between that temperature and freezing point of pure solvent

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true but reason is not the correct explanation of the assertion.

Q10. Assertion : Molar heat of vaporisation of water is greater than benzene.
  Reason : Molar heat of vaporisation is the amount of heat required to vaporise one mole of liquid at constant temperature.

•  If both assertion and reason are true and the reason is the correct explanation of the assertion.
•  If both assertion and reason are true but reason is not the correct explanation of the assertion.
•  If assertion is true but reason is false.
•  If the assertion and reason both are false.

If both assertion and reason are true but reason is not the correct explanation of the assertion.