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
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
[C] – Assertion is correct statement and reason is incorrect 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): 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): 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: 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: 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
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: 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 :- Interhalogen compounds are more reactive than halogen.
Reason :- They all undergo hydrolysis giving halide, cation derived from the smaller halogen & anion derived from larger halogen.
a) Assertion and reason both are correct statements and reason is correct explanation for assertion.
b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Assertion: The bond between adenine and thymine is stronger than the bond between Cytocine and guanine.
Reason: Cytosine and guanine have a triple hydrogen bond while adenine and thymine have a double hydrogen bond
A. Assertion and reason both are correct statements and reason is correct explanation for assertion.
B. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C. Assertion is correct statement but reason is wrong statement.
D. Assertion is wrong statement but reason is correct statement.
Assertion: IUPAC name of the compound is 2-Ethoxy-2-methylethane.
Reason: In IUPAC nomenclature, ether is regarded as hydrocarbon derivative in which a hydrogen atom is replaced by -OR or -OAr group [where R = alkyl group and Ar = aryl group]
(a) Both assertion and reason are true and the reason is the correct explanation of assertion.
(b) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
Assertion: Ethanol is a weaker acid than phenol.
Reason: Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Both assertion and reason are true and the reason is the correct explanation of assertion.
(b) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.
Assertion : Conductivity of all electrolytes decreases on dilution.
Reason : On dilution number of ions per unit volume decreases.
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true and the reason is not the correct explanation of assertion.
(C) Assertion is true but the reason is false.
(D) Assertion is false but the reason is true.
Assertion: \(E_o\) cell should have a positive value for the cell to function.
Reason: \(E_{cathode}\) < \(E_{anode}\).
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true and the reason is not the correct explanation of assertion.
(C) Assertion is true but the reason is false.
(D) Assertion is false but the reason is true.
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