Question

One student examines the properties of substance in laboratory. Aqueous solution of this substance converts blue litmus paper in to red. Identify the substance.
$P$: Lemon juice $Q$: Tomato juice $R$: Washing soda

• A. $P$ and $R$
• B. $Q$ and $R$
• C. $P$ and $Q$
• D. $P,Q$ and $R$ all

Answer 1

Answer: (C)

$P$ and $Q$

Lemon juice and tomato juice are acidic in nature and hence convert blue litmus paper to red.