Sodium, calcium, magnesium, and zinc were taken in 4 test tubes having dilute hydrochloric acid. In which test tube the rate of reaction will be faster?

Test tube having zinc

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Test tube having sodium

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Test tube having magnesium

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Test tube having calcium

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Solution

The correct option is B Test tube having sodium

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When dilute hydrochloric acid is added to zinc pieces taken in a test tube:

What would you observe on adding dilute hydrochloric acid to
(i) sodium bicarbonate placed in a test tube?
(ii) zinc metal in a test tube?

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