Assertion: Cooking time is reduced in pressure cooker. Reason: Boiling point of water inside the pressure cooker is lowered. A. If both Assertion and Reason are correct and reason is the correct explanation of Assertion . B. If both Assertion and Reason are correct and reason is not correct explanation of Assertion C. If Assertion is correct but Reason is incorrect. D. If Assertion is incorrect and Reason is correct.

Assertion: Isotonic solutions do not show any osmosis when placed side by side. Reason: Isotonic solutions have same solute concentration. A. If both Assertion and Reason are correct and reason is the correct explanation of Assertion . B. If both Assertion and Reason are correct and reason is not correct explanation of Assertion C. If Assertion is correct but Reason is incorrect. D. If Assertion is incorrect and Reason is correct.

Assertion: Molarity of the solution changes with temperature. Reason: Molarity is a colligative property. A. If both Assertion and Reason are correct and reason is the correct explanation of Assertion . B. If both Assertion and Reason are correct and reason is not correct explanation of Assertion C. If Assertion is correct but Reason is incorrect. D. If Assertion is incorrect and Reason is correct.

Study the diagram given below and answer the following questions: [Assertion-Reason Type Questions] [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement 1) Assertion (A): The diagram shows Schottky defect. Reason (R): Schottky defect occurs in ionic solids. 2) Assertion (A): LiCl Crystal is pink. Reason (R): Pink colour of LiCl crystal is due to excess Lithium. 3) Assertion (A): The crystal lattice density increases due to the defect shown in the diagram. Reason (R): Tetrahedral voids are surrounded by 4 constituent particles. 4) Assertion (A): AgCl shows Frenkel defect while NaCl does not. Reason (R): Frenkel defect is shown when anionic vacancies are occupied by unpaired electrons.

Assertion (A): Amorphous solids possess a long range order in the arrangement of their particles. Reason (R): The formation of amorphous solids involves very rapid cooling. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion (A): Crystalline solids are anisotropic in nature. Reason (R): Some of their physical properties show same electrical and optical properties in different directions in the same crystal. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion (A): Most of the solids possess high melting point. Reason (R): They have strong intermolecular forces of attraction. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion (A): Schottky defect arises when a non-ionic solid is heated. Reason (R): It happens because some of the lattice sites are vacant in the crystal. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion (A): The packing efficiency of simple cubic lattice is 52.4%. Reason (R): The number of atoms per unit cell is 2. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion: Diamond and graphite do not have the same crystal structure. Reason: Diamond is crystalline while graphite is amorphous. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion: In caesium chloride crystal, Cs⁺ is present on the centre of cube of the unit cell. Reason: For N⁻ atoms adopting fcc arrangement, there are 2N tetrahedral voids. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion: Na⁺ and Al³⁺ are isoelectronic but the magnitude of ionic radius of Al³⁺ is less than that of Na⁺ Reason: The magnitude of an effective nuclear charge on the outer shell electrons in Al³⁺ is greater than that of Na⁺. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion: The packing efficiency is maximum for the fcc structure. Reason: The coordination number is 12 in fcc structures. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement

Assertion: White ZnO becomes yellow upon heating. Reason: On heating ZnO loses oxygen and free electrons go into exited stated and upon returning imparts yellow radiation. [A] – Assertion & reason both statements are correct and reason is the correct explanation of assertion. [B] – Assertion & reason both are the correct statements but reason is not the correct explanation of the assertion. [C] – Assertion is correct statement and reason is incorrect statement. [D] – Assertion is incorrect statement and reason is correct statement