James added a small amount of baking powder in a test tube containing vinegar. Which amongst the following indicators confirm that a chemical change has taken place between them?
A
Change in colour
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B
Change in smell
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C
Evolution of gas
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D
All of the above
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Solution
The correct option is C Evolution of gas Baking soda combines with vinegar to form carbon dioxide gas, along with other byproducts. Carbon dioxide gas releases with an effervescence, and produces a hissing sound. Baking soda + Vinegar → Carbon dioxide + Water + Other substances