Question

Why is hot concentrated sulphuric acid not used in the preparation of hydrogen?​

Answer 1

$\huge{ \red{ \fbox{↪ answer :  }}}$

sulphuric acid is not used in the preparation of hydrogen as it will produce sulphur dioxide.

$\large{ \green{ \bold{ \underline{ \underline{ \overline{ \overline{ \pink{hope \: this \: helps \: you \: \: ✌}}}}}}}}$

Answer 2

Answer:

because it will produce sulphur dioxide

hope it helps you