Salary and remuneration of partner

How could the remuneration from firm became exempt??? 

Anyways, assuming the proprietory firm is of other proprietor and remuneration not exempt, you can file ITR 3 or 4.. 

Income Tax Return is prepared on ITR-3 when:

• an individual or an HUF is a partner in a firm AND
• where income chargeable to income-tax under the head "Profits or gains of business or profession" does not include any income except the income by way of any interest, salary, bonus, commission or remuneration, due to, or received by him from such firm.

ITR 4 is universal. If you are not confirm about which form to file, go with ITR 4.