Under which condition,dissociation of oxygen from oxyhaemoglobin in tissues occurs?

Under a given concentration in blood,dissociation of oxyhaemoglobin will increase if

What is the amount of $O_{2}$ supplied to tissues through every $100 \ ml$ of oxygenated blood under normal physiological conditions (in $ml$)?

What is the shape of the oxygen-hemoglobin dissociation curve?

When does the oxygen dissociation curve shift to the right?

Select the incorrect statement regarding hemoglobin.