Re: reliance IPO
you can apply.
generally IPOs get subscribed multiple number of times than it's total size.
at the time of allotment, some rules are applied and people get less number of shares than their actual applied number. this is done so as to ensure most number of people get shares from IPO.
e.g. for RPL, if you apply for full lot which is 210 shares in retail category. chances are that you will get upto 5-10% or 10-20 shares.
Rules for allotment are not fixed. But in most cases, applying for the full amount (1lakh for retail) has more chances of getting shares.