Question

You are provided with four test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. Write down an activity to find the nature (acidic/basic/neutral) of each solution.

Answer 1

Add blue litmus solution and then red litmus solution and note down the change in colour.

Sugar solution - No change in colour of blue or red litmus solution.

Baking soda solution - Turns red litmus blue.

Tamarind solution -  Turns blue litmus red.

Salt solution - No change in colour of blue or red litmus solution.

Hence,

Sugar solution, salt solution - neutral

Baking soda solution - basic

Tamarind solution - acidic