One student examines the properties of the substance in the laboratory. Aqueous solution of this substance converts blue litmus paper into the red. Identify the substance.
(P) Lemon Juice (Q) Tomato Juice (R) Washing Soda

P and R

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Q and R

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P and Q

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P, Q, and R all

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Solution

The correct option is D P and Q
An aqueous solution of a substance converts blue litmus paper into the red.
The substance can be either Lemon Juice or Tomato Juice
Lemon Juice and Tomato Juice are acidic in nature. Washing Soda is alkaline in nature. Litmus paper changes its colour from blue to red in acidic solution. Litmus paper changes its colour from red to blue in alkaline solution.

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One student examines the properties of the substance in the laboratory. Aqueous solution of this substance converts blue litmus paper into the red. Identify the substance.(P) Lemon Juice (Q) Tomato Juice (R) Washing Soda

One student examines the properties of the substance in the laboratory. Aqueous solution of this substance converts blue litmus paper into the red. Identify the substance.
(P) Lemon Juice (Q) Tomato Juice (R) Washing Soda