Question

throwing sand on fire puts it out . why ?​

Answer 1

Explanation:

Actually fire needs to be combined with oxygen (combustion process). In the absence of oxygen gas dire can't be burned.

So, if fire is covered with sand , it doesn't combine with oxygen, so combustion process will not take place.

In absence of combustion process, fire can't be burnt. So Fire will be put off.

Answer 2

Sand would cut off the supply of oxygen which is important for combustion to take place