List - I (Metal) List - II (Correct statements) (A) Fe (P) Produces NO with 20% HNO 3 (B) Cu (Q) Produces NH 4 NO 3 with 6% HNO 3 (C) Pb (R) Produces NO 2 with 70% HNO 3 (D) Sn (S) Produce

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List - I (Metal) List - II (Correct statements) (A) Fe (P) Produces NO with 20% HNO 3 ​ (B) Cu (Q) Produces NH 4 ​ NO 3 ​ with 6% HNO 3 ​ (C) Pb (R) Produces NO 2 ​ with 70% HNO 3 ​ (D) Sn (S) Produces NH 4 ​ NO 3 ​ with 20% HNO 3 ​

TestHub · Accepted Answer

Fe (A): Reacts with dilute 6% HNO₃ to produce NH₄NO₃ (Q) and with 20% HNO₃ to produce NO (R).

Cu (B): Dilute 20% HNO₃ yields NO (P), while concentrated 70% HNO₃ yields NO₂ (R).

Pb (C): Similarly to copper, it produces NO (P) with 20% HNO₃ and NO₂ (R) with 70% HNO₃.

Sn (D): Reacts with very dilute 6% HNO₃ (Q) and dilute 20% HNO₃ (S) to form NH₄NO₃.

List - I (Metal)	List - II (Correct statements)
(A) Fe	(P) Produces NO with $20% HNO_{3}$
(B) Cu	(Q) Produces $NH_{4} NO_{3}$ with $6% HNO_{3}$
(C) Pb	(R) Produces $NO_{2}$ with $70% HNO_{3}$
(D) Sn	(S) Produces $NH_{4} NO_{3}$ with $20% HNO_{3}$

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