Urgent queries

Hey Friends,

I had the following tax queries. Will be grateful if could get some help here.

1. When is STCG taxed at 30% -  Examples ?

2. What are the tax implications of Sec. 192 (1A) - (Payment on Non monetary perks to employees) ?

3. How is PF taxed - in hands of Employer and Employee ?

4. What is the implication of Rule 37BA ?

5. When can payment to a Non resident made without TDS ?

6. Difference between section 43 (1) and 43 (6) ?

Thanks in Advance :)