turnover includes in COMP. SCHEME

No... .. .. ..

aggregate turnover" means the aggregate value of all taxable supplies [excluding the value of inward supplies on which tax is payable by a person on reverse charge basis], exempt supplies, exports of goods or services or both and inter-State supplies of persons having the same Permanent Account Number, to be computed on all India basis but excludes central tax, State tax, Union territory tax, integrated tax and cess;

so exempt supplies are need to be include for the conclusion of actual turnover for availing comp. sheme

In the new version of GSTR4, your sales turnover can be shown seperately 0% & 1%

for computation of turnover exempt supplies to included.

But for payment of gst @ 1% only on taxable supplies (assuming your trader)