Dear Ravina and TVM,
You have asked for very lengthy details. Salary depends upon the package or the CTC (cost to company). It comprises Basic Pay, DA, HRA, CCA, and other allowances (like conveyance, uniform, tiffin, etc.). Deductions consist of "Statutory Deductions" like EPF at 12%, ESI at 4.75%, PT as prescribed, TDS for individuals, etc., as well as "On Account" deductions (like advance/loan installments, LIC, savings, fines, penalties, etc.). The difference between the two is the "Take-Home Salary." Bonus and Gratuity are annual and terminal benefits, respectively.
Dear Paranti Devi,
You do not have to have a bank account for PF. PF is deducted from your salary and is deposited with RPFC, who maintain your account. You need to have a bank account for the credit of your salary to your account. You can also mention this bank account to RPFC authorities at the time of withdrawing the deposits from your PF account.