Exemption limit of special allowance under section 10 for salaried employees

Special allowance - there are two types. fully exempted and partial. 

Full exempted - Daily allowances, Travel, research&dev., conveyance, helper and uniform. 

Partial- there are certain limits.check Section 10(14)II. and Business purpose means what kind of?? is it for development or travel or anyother??

mention properly. 

 

There r uniform allowancwes and news paper and periodicals that are given in the breakup of salary, the amount spend in special allowances is of travelling to specific locations or sites during work, having food with clients etc.. are these deductions available during this year of the standard deduction of 40000 covers it all up