Breathing and Exchange of Gases NEET PYQs

Vital capacity of lung is ________.

Under normal physiological conditions in human being every 100 ml of oxygenated blood can deliver ___________ ml of O₂ to the tissues.

Which of the following is not the function of conducting part of respiratory system ?

The partial pressures (in mm Hg) of oxygen (O₂) and carbon dioxide (CO₂) at alveoli (the site of diffusion) are :

Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.

Select the correct events that occur during inspiration.
A. Contraction of diaphragm
B. Contraction of external inter-costal muscles
C. Pulmonary volume decreases
D. Intra pulmonary pressure increases

Identify the wrong statement with reference to transport of oxygen.

The Total Lung Capacity (TLC) is the total volume of air accomodated in the lungs at the end of a forced inspiration. This includes:

Match the following columns and select the correct option :

Column-I	Column-II
(A)Pneumotaxic Centre	(I)Alveoli
(B)O2 Dissociation curve	(II) Pons region of brain
(C)Carbonic Anhydrase	(III)Haemoglobin
(D)Primary site of exchange of gases	(IV)R.B.C.

According to Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm to human health ?