Question

18. Ishaan tested the nature of a few common . 1 A substances with different indicators and . 1 recorded his observations as follows: Substance P turned methyl orange yellow. Substance Q turned phenolphthalein colourless. Substance R did not have any effect on blue or red litmus paper. Substance S turned China rose indicator green. P, Q, R and S could be respectively (A) Lemon juice, fermented milk, salt solution and milk of magnesia (B) Sugar solution, vinegar, water and curd (C) Lime water, apple juice, sugar solution and baking soda (D) None of these. 10 ud the​

Answer 1

Answer:

Explanation:

Lime water, apple juice, sugar solution and saliva