| 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? |
A) Mg
B) S
C) Na
D) Fe
Correct Answer: B
Solution :
As the solution turns blue litmus red so, it is an acidic solution. On burning metals and non-metals, their oxides are formed. 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).
You need to login to perform this action.
You will be redirected in
3 sec
