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JEE · NEET Previous Year Question

In which of the following cases a chemical reaction is possible?

Topic: JEE PYQ

Answer: A. Full step-by-step solution below.

  1. A solution is stirred with a copper spoon.
  2. BConc. is stored in a platinum vessel.
  3. CGold ornaments are washed with dil. .
  4. D is placed in a copper vessel.

Correct answer: A

Solution

(a): When solution is stirred with a copper spoon, displacement reaction will takes place i.e., displace from solution

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