Question

. A student added vinegar to test tubes I, II , III , IV containing sodium carbonate ,sodium hydroxide , sodium metal and sodium bicarbonate respectively and then he introduced a burning matchstick near the mouth of the test tubes . The matchstick will be extinguished in test tubes III. and IV I and II I and IV II. and III 5. how will ​

Answer 1

Answer:

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Explanation:

gsggsvsvzbz zbbsbwjqii1o2or9f99fxx