Q.

When baking soda is mixed with lemon, bubbles are formed with the evolution of a gas. What type of change is it?


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a

Chemical change

b

Physical change

c

Both of these

d

None of these 

answer is A.

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Detailed Solution

When baking soda is mixed with lemon juice, Carbon dioxide(CO2) gas is released in the form of bubbles. As the chemical composition of the substance changes, a new product is formed after mixing. Thus it is a chemical change.
 
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