Question

Choose the odd one out:
Oxyhaemoglobin, Carbaminohaemoglobin, Hypoxia, Carboxyhaemoglobin

Answer 1

In the absence of oxygen or its low concentration the level of oxyhaemoglobin lowers and the level of carboxyhaemoglobin increases. It causes hypoxia

The carbaminohaemoglobin is formed when the $C{O}_2$ combines with the haemoglobin. It does not cause hypoxia. So, the odd one out is 'carbaminohaemoglobin'.