STCG adjustment with basic exemption limit

Hi,

     My source of incomes for only from a) Bank Savings account interest and b) Short term Capital gains(STCG) from the sale of NSE listed equity shares, Please help me on the below questions. This query is for my FY27 tax planning (AY 2027 - 2028) under New tax regime. 

1. Can I adjust the STCG within basic exemption limit to save tax? For ex., if my Bank Savings account interest is Rs.50,000 and STCG is Rs. 3,40,000, Is my tax liability NIL (total income is Rs,3,90,000 within Rs. 4,00,000 basic exemption limit) ?
2. If STCG is higher (let us say Rs.10,00,000) , Can I avail sec 87A rebate to still make tax liability to zero as STCG+Interest is < Rs.12,00,000 ?

Thanks

Mani