capital gains exemption u/s 54

You are not eligible to claim exemption under section 54 because under this section exemption can be claimed only when capital asset tharansferred is a residential house property.

As you have a short term capital gain, therefore, you are also not be able to claim exemption under section 54F. Section 54F provide exemption if the long term capital gain arising from transfer of long term capital other residential house is invested in a residential house .

whether there is any exemption if it is long term capital asset?

Yes you can claim exemption under section 54F.

is it require any proofs regarding exemption under section 54F while filling income tax return

Of course proof will be required.
Fyryer, you can claim exemption of LTCG under section 54EC by investing in long term specified bonds within 6 months from the date of transfer of asset.