Rohan took 10ml of freshly prepared Iron sulphate solution in four different test tubes and
added four different metal strips to each test tube as shown below:
Metal
Metalo
Metal
Metals
-reso,
Faso,
solution
In test tubes i and lit, black residue was obtained while in test tubes II and IV, no change was
observed. Metals P Q Rand S could be
respectively
a) ALCU, Pb, As b) Pb, CU, AR. AI c) Zn, AL, CU, AR d) n, OU, AL, AS
On mixing two colorless solutions X and Y. a yellow precipitate Z was formed. Which of the
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Answer:
Correct option (D) Zn, Cu, Al,
Explanation:
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