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:

if it turns blue litmus to red it must be an acid