Question
Strong electrolytes have low molar conductivity at high concentration.
Reason (R): For a strong electrolyte, at high concentration, the number of constituent ions of the electrolyte is high and hence the attractive force between the oppositely charged ions is also high
(a) Both A and R are correct and R is the correct explanation of A
(b) A is correct but R is wrong
(c) A is wrong but R is correct
(d) Both A and R are wrong

Answer

(a) Both A and R are correct and R is the correct explanation of A

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Assertion (A) – Fullerene has aromatic character.
Reason (R) – Some of the fullerenes have e-bonds and delocalised n-bonds.
 (A): Decomposition of hydrogen peroxide catalysed by $1^{-}$is a bimolecular first order reaction.
Reason (R): The above reaction take place in two steps, step 1 involves both $H _2 O _2$ and I and so it is bimolecular but order is determined experimentally as 1
(a) Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$.
(b) Both A and R are correct but R is not the correct explanation of A
(c) $A$ is correct but $R$ is wrong
(d) A is wrong but R is correct
Assertion (A) – Xenon is used in high speed electronic flash bulbs used by photographers.
Reason (R) – Xenon emits an intense light in discharge tubes instantly.
Assertion (A) $- Mn ^{2+}$ is more stable than $Mn ^{4+}$
Reason $(R)- Mn ^{2+}\left(3 d^5\right)$ is more stable than $Mn ^{4+}\left(3 d^3\right)$ is due to extra stability of half-filled electronic configuration.
Assertion (A) : Adsorption is a spontaneous process.
Reason (R) : Adsorption is always accompanied by decrease in free energy. When molecules are adsorbed, there is always a decrease in randomness of the molecules.
(a) Both A and R are correct and R is the correct explanation of A.
(b) Both A and R are correct but R is not correct explanation of A.
(c) Both A and R are wrong.
(d) A is correct but R is wrong.
Assertion(A): In the process of dissolution of HCl in water, HCl act as acid and $H_2O$ act as base.
Reason (R): When HCl is dissolved in water, it donates a proton to water.
(a) Both A and R are correct and R explains A
(b) Both A and R are wrong
(c) A is correct but R is not the correct explanation of A.
(d) A is wrong but R is correct.
Assertion $( A ): BF _3$ is a Lewis acid.
Reason (R): Boron has a vacant 2p orbital to accept the lone pair of electrons donated by any substance to form a new coordinate covalent bond.
(a) Both A and R are correct and R is the correct explanation of A
(b) Both A and R are wrong .
(c) A is correct but R is not the correct explanation of A.
(d) A is wrong but R is correct.
(A): Alcohols cannot be used as solvent for Grignard reagent.
Reason (R): Alcohols are decomposed by Grignard reagents to give alkane.
(a) Both A and R are correct and R is the correct explanation of A.
(b) A is correct but R is wrong
(c) A is wrong but R is correct
(d) Both A and R are correct but R is not correct explanation of A.
Assertion (A) – Sulphuric acid is a high boiling point and viscous liquid.
Reason (R) – This is due to the association of molecules together through hydrogen bonding.
(A): Both alcohol and ether have higher boiling point.
Reason (R): Both are having intermolecular hydrogen bonding.
(a) Both A and R are correct and R is the correct explanation of A.
(b) Both A and R are wrong
(c) A is correct but R is wrong
(d) A is wrong but R is correct