Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reaso — JEE Mains Chemistry Past Papers Chemistry Question

Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Barium carbonate is insoluble in water and is highly stable. Reason (R) : The thermal stability of the carbonates increases with cationic size. Choose the most appropriate answer from the options given below: (A) Both (A) and (R) are true but (R) is the true explanation of (A). (B) Both (A) and (R) are true and (R) is not the true explanation of (A). (C) (A) is false but (R) is true. (D) (A) is true but (R) is false. uhps nks dFku fn, gSaA ,d dk uke vfHkdFku (A) rFkk nwljs dk dkj.k (R) gSA. vfHkdFku (A) : csfj;e dkcksZusV ty esa vfoys; gS rFkk vR;f/kd LFkk;h gSA dkj.k (R) : dkcksZusVksa dk rkih; LFkkf;Ro /kuk;u ds dkj.k vkdkj c<+us ij c<+rk gSA uhps fn, fodYiksa esa ls lokZf/kd mi;qDr mÙkj pqusa % (1) nksuksa (A) rFkk (R) lgh gSa rFkk (A) dh lgh O;k[;k (R) gSA (2) nksuksa (A) rFkk (R) lgh gSa rFkk (A) dh lgh O;k[;k (R) ugha gSA (3) (A) lgh ugha gS ijUrq (R) lgh gSA (4) (A) lgh gS ijUrq (R) lgh ugha gSA