AP and TS EAMCET Medical Model Paper 8

Identify the conditions given below at the time when oxy-haemoglobin dissociation curve turns to the left.
a) Blood supplying O2 to tissues
b) A fall in pCO2 and rise in PH
c) Haemoglobin bound with O2 on the lung surface
d) A rise in pCO2 and fall in PH