Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Write some physical properties of hydrogen gas.

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The physical properties of hydrogen gas are as follows:
1) It is colourless, odourless and taseless gas.
2) It is a supporter of combustion.