Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs. Choose the correct answer from the following:

(1). The statement is false for both the environment
(2). The statement is true for water but false for land
(3). The statement is true for both the environment
(4). The statement is false for water but true for land

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli?

(1). Low pCO₂, and High H⁺ concentration
(2). Low pCO₂, and High temperature
(3). High pO₂, and High pCO₂
(4). High pO₂, and Lesser H⁺ concentration

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Match List I with List II:

Choose the correct answer from the options given below:

(1). A-II, B-I, C-IV, D-III
(2). A-I, B-III, C-II, D-IV
(3). A-II, B-IV, C-I, D-III
(4). A-III, B-II, C-IV, D-I

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Vital capacity of lung is

(1). IRV + ERV + TV + RV
(2). IRV + ERV + TV- RV
(3). IRV + ERV + TV
(4). IRV + ERV

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). It clears inhaled air from foreign particles
(2). Inhaled air is humidified
(3). Temperature of inhaled air is brought to bodytemperature
(4). Provides surface for diffusion of O₂ and CO₂

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Under normal physical conditions in human beings every 100 ml oxygenated blood can deliver ______ ml of O₂ to the tissues.

(1). 2 ml
(2). 5 ml
(3). 4 ml
(4). 10 ml

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). pO₂ =104 and pCO₂ = 40
(2). pO₂= 40 and pCO₂=45
(3). pO₂ = 95 and pCO₂ = 40
(4). pO₂ = 159 and pCO₂= 0.3

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Assertion (A): A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations.
Reason (R): Due to low atmospheric pressure at high altitude, the body does not get sufficient Oxygen.
In the light of the above statements, choose the correct answer from the options given below.

(1). Both (A) and (R) are true and (R) is the correct explanation of (A)
(2). Both (A) and (R) are true but (R) is not the correct explanation of (A)
(3). (A) is true but (R) is false
(4). (A) is false but (R) is true

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). High pO₂ , low pCO₂, less H⁺, lower temperature
(2). Low pO₂, high pCO₂, more H⁺, higher temperature
(3). High pO₂, high pCO₂, less H⁺, higher temperature
(4). Low pO₂, low pCO₂, more H⁺, higher temperature

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

ldentify the wrong statement with reference to transport of oxygen.

(1). Partial pressure of CO₂ can interfere with O₂ binding with haemoglobin
(2). Higher H⁺ conc. in alveoli favours the formation of oxyhaemoglobin
(3). Low pCO₂ in alveoli favours the formation of Oxyhaemoglobin
(4). Binding of oxygen with haemoglobin is mainly related to partial pressure of O₂

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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


(1). (c) and (d)
(2). (a), (b) and (d)
(3). only (d)
(4). (a) and (b)

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL ?

(1). 1700 mL
(2). 2200 mL
(3). 2700 mL
(4). 1500 mL

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to

(1). inflammation of bronchi and bronchioles.
(2). proliferation of fibrous tissues and damage of the alveolar walls.
(3). reduction in the secretion of surfactants by pneumocytes.
(4). benign growth on mucous lining of nasal cavity.

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Which of the following is an occupational respiratory disorder?

(1). Emphysema
(2). Botulism
(3). Silicosis
(4). Anthracis

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively ?

(1). Decreased respiratory surface; Inflammation of bronchioles
(2). Increased respiratory surface; Inflammation of bronchioles
(3). Increased number of bronchioles; Increased respiratory surface
(4). Inflammation of bronchioles; Decreased respiratory surface

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Match the items given in Column I with those in Column II and select the correct option given below :


(1). (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
(2). (a) - (i), (b) - (iv), (c) - (ii), (d) - (iii)
(3). (a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)
(4). (a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of

(1). Expiratory Reserve Volume.
(2). Residual Volume.
(3). Inspiratory Reserve Volume.
(4). Tidal Volume.

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Reduction in pH of blood will

(1). reduce the blood supply to the brain
(2). decrease the affinity of hemoglobin with oxygen
(3). release bicarbonate ions by the liver
(4). reduce the rate of heart beat.

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Asthma may be attributed to

(1). allergic reaction of most of the cells in the lungs
(2). inflammation of the trachea
(3). accumulation of fluid in the lungs
(4). bacterial infection of the lungs

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Name the chronic respiratory disorder caused mainly by cigarette smoking

(1). asthma
(2). respiratory acidosis
(3). respiratory alkalosis
(4). emphysema

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02