McqMate
| Q. |
When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Carbon dioxide |
| D. | All of them |
| Answer» C. Carbon dioxide | |
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Explanation: When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) reacting with a base (sodium bicarbonate, more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction. |
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