Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETChemistrySolutions

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): A mixture of 68 % nitric acid and 32 % water by mass forms a maximum boiling azeotrope. Reason (R): The nitric acid-water mixture shows a large positive deviation from Raoult's law due to the breaking of hydrogen bonds. In the light of the above statements, choose the most appropriate answer from t

Options

  1. AAssertion (A) is true but Reason (R) is false.
  2. BAssertion (A) is false but Reason (R) is true.
  3. CBoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  4. DBoth Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).

Correct answer

A. Assertion (A) is true but Reason (R) is false.

Step-by-step solution

Assertion (A) is true because a mixture of nitric acid and water (specifically 68 % HNO ₃ and 32 % H ₂ O by mass) forms a maximum boiling azeotrope as per NCERT. Reason (R) is false because maximum boiling azeotropes are formed by solutions that show a large negative deviation from Raoult's law. In the nitric acid-water mixture, the interactions between the different molecules are stronger than those in the pure components, leading to a negative deviation, not a positive one. Answer: Assertion (A) is true but Reaso

Practice Solutions on Quantrex Academy →

More from Solutions

What is boiling point of solution containing 7.45 g of KCl in 500 g of water, assuming 80 % dissociation of KCl ? (molar mass of KCl = 74.5 g/mole , k_b for water = 0.52 K/molal ) 2026Identify from the following pair of solutions on mixing exhibits positive deviation from Raoult's law. 2026A solution containing 1.2 g nonvolatile solute in 100 g. of a solvent has a boiling point elevation 1.2 K. Calculate the molar mass of solute if molal elevation constant of solvent 2026The osmotic pressure of barium chloride and glucose solution of the same concentration at the same temperature are respectively 0.62 atm and 0.24 atm. Calculate the van't Hoff fact 2026Which of the following aqueous solutions exhibits maximum freezing point depression assuming complete dissociation? 2026A solution contains 50 g of common salt in 500 gm of water. Find the concentration of the solution in terms of percentage. 2026What should be the molarity of aqueous solution of K ₂ SO ₄ so that it is isotonic with aqueous 1 M glucose at same temperature, assuming complete dissociation? 2026Which of the following solutions has maximum vapour pressure? 2026 Full Solutions list All NEET PYQs