Brokerage & charges

How much are delivery charges? How do I view the charges summary before placing an order? What are MCX transaction and other charges (as per Exchange and Government)? What are NSE transaction and other charges (as per Exchange and Government)? What are the AMC charges for Demat? What charges will I pay, and what does each charge mean? What's the brokerage for commodities ? What's the brokerage for Currencies ? What's the brokerage for intraday trades? What's the brokerage for Options trades? Why was a Demat maintenance charge deducted from my account? How are pledge and unpledge charges calculated? Why have I been charged a margin penalty?