CBSC Session 2022-23.
Sample Papers of Class 10th, Science.
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A student is studying the properties of acetic acid. List two physical properties of acetic acid he observes. What happens when he adds a pinch of sodium hydrogen carbonate to this acid? Write any two observations.
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Acetic acid is a colourless liquid.
Its is miscribe/soluble in water(or any other physical property).
On adding a pinch of sodium hydrogen carbonate,
Brisk effervescence is observed.
Evolution of a colourless/odourless gas.