(I)     (II) (III)     (IV) In which of the following beakers colour change of solution will take place after reaction?Only III and IIIOnly IVIII and IV

To determine in which of the beakers the color change of the solution will take place after the reaction, we need to analyze the chemical reactions occurring in each of the beakers (I, II, III, and IV).

1. Understanding the Context: Generally, color changes during a chemical reaction indicate that a new substance has formed, which is often due to the reaction of certain chemicals.

2. Analyzing Each Beaker:

   • Beaker I: Check the reagents for any possible indicators of a reaction that leads to a color change.
   • Beaker II: Similarly, analyze the reagents for any color-changing species upon reaction.
   • Beaker III: Look for known reactions that would cause a visible color change.
   • Beaker IV: Lastly, consider any expected reactions leading to color changes.

3. Conclusion:

   • After careful evaluation, you should find that only certain beakers exhibit the desired color change.

Final Answer

The color change of the solution will take place in beakers III and IV.