Leave Policy During Notice Period
Normally, as per the service rules, no leave can be availed during the notice period. However, it depends upon the contract of employment, especially in the case of private companies. In the case of all government and PSU jobs, no leave can be availed during the notice period. Still, if you take leave, the notice period gets extended by that much leave period. For example, if you have given one month's notice on 25th Nov. and if you take 4 days of leave (of any kind), then the last date of employment will be 29th Dec (and not 25th Dec).
Special Leaves During Notice Period
Further, there are special leaves which are preparatory to retirement (LPR - Leave Preparatory to Retirement). Such kinds of leave (combined with any other kinds of leave such as CL, PL, etc.) can be availed during the notice period.