Question 7 — Grape juice was mixed with red - Questions at the end of the chapter - Chapter 2 Class 7 - Exploring Substances: Acidic, Basic, and Neutral

Last updated at August 16, 2026 by

Q7 (Medium): Grape juice was mixed with red rose extract; the mixture got a tint of red colour. What will happen if baking soda is added to this mixture? Justify your answer.

Answer:
We have studied that grape juice is acidic and baking soda is basic , causing neutralisation reactions . This is why the colour will change.

  • Red colour shows acidic grape juice
  • Baking soda is basic substance
  • Neutralisation occurs when acid meets base
  • Red colour changes to green colour
Colour Change in Mixture Initial Grape juice + red rose = red Add base Baking soda added Neutralisation Acid + base reaction Colour changes to green!
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