JEE Main 2020 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 3 September 2020, Shift 1, Chemistry Q29

Question 29 of 75 in this shift, Chemistry question 4 of 25. NTA dropped this question from the final key; it is left out of every count on this site.

Let

\mathrm{C_{NaCl}}

and

\mathrm{C_{BaSO_4}}

be the conductances (in S) measured for saturated aqueous solutions of NaCl and

\mathrm{BaSO_4}

, respectively, at a temperature T. Which of the following is false ?

(1) $\mathrm{C_{NaCl}}>>\mathrm{C_{BaSO_4}}$ at a given T
(2) $\mathrm{C_{BaSO_4}}(\mathrm{T_2})>\mathrm{C_{BaSO_4}}(\mathrm{T_1})$ for $\mathrm{T_2}>\mathrm{T_1}$
(3) $\mathrm{C_{NaCl}}(\mathrm{T_2})>\mathrm{C_{NaCl}}(\mathrm{T_1})$ for $\mathrm{T_2}>\mathrm{T_1}$
(4)Ionic mobilities of ions from both salts increase with T.

Official answer

Dropped by NTA (marks given to all)

NTA final key (Sep 2020): NTA final key: Drop (question dropped).

Chapter: Equilibrium
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy