Question

Kanika takes a burning substance and collects the evolved vapours in a test tube, making sure that they do not escape. A small amount of water is added to the test tube. To the solution obtained, a few drops of blue litmus solution are added. The litmus solution turns red. Which of the following could be the burning substance ​

Answer 1

Answer:

Non-metals form acidic oxides. Therefore, the substance which Kanika burned must be a non- metal (here Mg, Na and Fe are metals while S is a non-metal)

Explanation:

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Answer 2

Answer:

NOTE: Non metals form metallic oxides

So, the substance which Kanika has burnt must be a non - metal

(here Mg, Na and Fe are metals while S is a non-metal)