JEE Main 2021 Chemistry question

Match List-I with List-II : List-I: (a) [Co(NH_3)_6][Cr(CN)_6] (b) (c) (d) cis- List-II: (i) Linkage isomerism (ii) Solvate isomerism (iii) Co-ordination isomerism (iv) Optical isomerism Choose the correct answer from the options given below :

• (A)(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)Correct
• (B)(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
• (C)(a)-(iii), (b)-(i), (c)-(iv), (d)-(iii)
• (D)(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)