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प्रश्न
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.
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उत्तर
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
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