Assertion: p-nitrophenol is more acidic than phenol.
Reason: Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(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.
Reason: Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(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.
(a) Both assertion and reason are true and the reason is the correct explanation of assertion.
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: o-Nitrophenol is less soluble in water than the m- and p-isomers.
Reason: m- and p- Nitrophenols exist as associated molecules.
(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: Like bromination of benzene, bromination of phenol is also carried out in the presence of Lewis acid.
Reason: Lewis acid polarises the bromine molecule.
(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: Bond angle in ethers is slightly less than the tetrahedral angle.
Reason: There is a repulsion between the two bulky (-R) groups.
(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: Phenol forms 2,4,6–tribromophenol on treatment with \(Br_2\) in carbon disulphide at 273K.
Reason: Bromine and carbon disulphide both are nonpolar.
(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: Boiling points of alcohols are greater than ethers of same molar mass.
Reason: Ethers can form intermolecular hydrogen-bonding with each other.
(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: Phenols give o- and p-nitrophenol on nitration with conc. \(HNO_3\) and \(H_2\)\(SO_4\) mixture.
Reason: —OH group in phenol is o–, p– directing.
(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: Amino acids in protein remain intact even when it is denatured.
Reason: The primary structure of protein is broken to give individual aminoacids on denaturation.
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 :-Water has high melting point.
Reason :- Water molecules are associated with hydrogen bonding.
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 (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: 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.
Assertion: Bond angle in ethers is slightly less than the tetrahedral angle.
Reason: There is a repulsion between the two bulky (-R) groups.
(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 (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: \(E_o\) 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.