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Subject :NSO    Class : Class 7

Rachit added a teaspoonful of vinegar and a pinch of baking soda in a test tube. He heard a hissing sound and saw bubbles of a gas coming out. He passed this gas through lime water. Which of the following is incorrect about his experiment?

A Lime water turns milky.
B The gas evolved was carbon dioxide.
C Sodium hydrogencarbonate is formed which makes lime water milky.
D Both b and c

Answer is c

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