A study to check whether the distance between bony condyle and ear tragus measured with the patient wearing surgical mask will be able to predict difficulty in giving breath via face mask under anaesthesia.

Intervention1: NIL: NIL
Control Intervention1: Condyle tragus distance measurement: The Condyle tragus distance( CTD)will be measured while patient is wearing surgical mask with the mouth open and then with jaw protruded using finger width
and vernier caliper measurement.CTD will be used tto predict difficult mask ventillation.
Control Intervention2: NIL: NIL
Primary outcome(s): Condyle tragus distance with mouth open (in finger breadth & mm) measured while wearing surgical mask for prediction of DMV (Warters scale â?¥ 2)
Timepoint: Warters scale will be measured 30 sec after loss of eyelash.