Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
53 views
in Chemistry by (78.6k points)
closed by
When a metal rod M is dipped into an aqueous colourless concentrated solution of compound N, the solution turns light blue. Addition of aqueous `NaCl` to the blue solution gives a white precipitate O. Addition of aqueous `NH_(3)` dissolves O and gives an intense blue solution.
The metal rod M is
A. Fe
B. Cu
C. Ni
D. CO

1 Answer

0 votes
by (83.1k points)
selected by
 
Best answer
Correct Answer - B
`underset((M))(Cu)+underset((N))(2AgNO_(3))rarrunderset(("Blue"))(Cu(NO_(3))_(2))+2Ag`
`NaCl+underset(("remaining"))(AgNO_(3))rarrunderset((O))(AgCldarr)+NaNO_(3)`
`2AgCl+2NH_(3)(aq)rarrunderset(("Soluble"))([Ag(NH_(3))_(2)]^(+))`
`underset(("remaining"))(Cu(NO_(3))_(2))+4NH_(3)(aq)rarrunderset(("Deep blue colour"))([Cu(NH_(3))_(4)](NO_(3))_(2))`

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...