Question

which of following statements is incorrect for a chemical reaction?

1, Heat may be given out but never absorbed.
2, sound may be produced.
3, A colour change may take place
4, A gas may be evolved.​

Answer 1

Answer:

4

Explanation:

mark as brilliant answer

Answer 2

Answer:

$\huge \bold{ \orange{ \underline{ \color{olive}{ \underline{\color{blue}{ \dag} \: \pink{a} \red{n} \color{yellow}{s} \color{pink}{w} \color{silver}{e} \color{aqua}{r} \color{navy}{ \dag}}}}}}$

A gas may be evolved.