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

Soln:

Add blue litmus solution and then red litmus solution for the test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. One can observe the colour changes to find the nature of each of them. It is as follows.

Sugar and salt solution is neutral as there is no colour change

Baking soda turns red litmus to blue and it is a basic solution.

Tamarind solution turns blue litmus to red and it is acidic in nature