Question

is
$H_2$+ $O_2$ -------------> H2O
a redox reaction if yes then plzz tell the oxidising agent and reduction agent....

Answer 1

Yes this is obviously an amazing redox reaction.
Here, H2 is the reducing agent because it itself is being oxidised.
And, likewise O2 is the oxidising agent because it itself is being reduced.

Answer 2

the oxidising agent is :- O2

and reducing agent is H2