Which one of the following dissolves more rapidly in blood haemoglobin than oxygen ?

Which one among the following gases readily combines with the haemoglobin of the blood?

Which one of the following in blood absorbs oxygen

Which of the following combines with haemoglobin in blood?

In which of the following disorders, blood has a defective haemoglobin ?

Which one of the following air pollutants combines with the haemoglobin of human blood and reduces its oxygen carrying capacity, leading to suffocation and may cause even death?

Which of the following combines with blood to form oxy-haemoglobin

Which one has dissolving capacity in blood greater than oxygen?