10th Biology Chapter 1 Gaseous Exchange

Sr #	Questions	A	B	C	D
1	Number of pairs of ribs in humans is:	12	24	26	None of these
2	Lungs are organ which are:	Spongy	Elastic	Spongy and elastic	Tough
3	A disease involving breakdown of air sacs of lungs is called:	Pneumonia	Bronchitis	Asthma	Emphysema
4	Most of the gaseous exchange in leaf occurs through:	Stomata	General surface	Cuticle	Lenticels
5	Total chemicals in Tobacco smoke are:	1000	2000	3000	4000
6	Air passageway starts from:	Nose	Pharynx	Trachea	Bronchi
7	Which one is form of allergy?	Asthma	Bronchitis	Pneumonia	Lung cancer
8	Asthma is caused by:	Perfumes	Vitamin B-12 deficiency	Vitamin C deficiency	Vitamin K deficiency
9	Powerful poison which damages brain is:	Tar	Nicotine	Carcinogen	Carbon monoxide
10	Rate of breathing depends on concentration of which gas in blood?	Oxygen	Carbon dioxide	Nitrogen	Hydrogen
11	Cluster of pouches found in respiratory system:	Bronchi	Alveoli	Bronchioles	Trachea
12	Main cause of lung cancer is:	Smoking	Viral infection	Bacterial infection	Both 2 & 3
13	How many bronchi are found in air passageway?	1	2	Many	None
14	Which of the following lessens the oxygen carrying capacity of hemoglobin?	Tar	Carbon dioxide	Nicotine	Carbon monoxide
15	Which of the following is called voice box?	Trachea	Larynx	Bronchi	Alveoli
16	Amount of Carbon dioxide in inspired air is:	16%	0.04%	4%	None of these
17	How many lobes are present in right lung?	2	3	4	5
18	In humans and other higher animals, exchange of gases occur through:	Skin	Respiratory surface	Air passageway	Lungs
19	Which remains unaffected in expired air?	O2	CO2	N2	Water vapors
20	Percentage of carbon dioxide in exhaled air is:	16%	4%	79%	0.04%