CBSE Class 9 Science Why Do We Fall Ill MCQs Set C

Question. Dislocation is a disease caused by
(a) Biological agent
(b) mechanical agent
(c) physical agent
(d) chemical agent

Answer: C

Question. Specific defence mechanism against disease comprises
(a) physical barrier
(b) lysozme
(c) phagocytes
(d) immune system

Answer: D

Question. Which of the following statements is correct ?
(a) Degenerative diseases are non communicable
(b) Allergy is caused by droplet infection
(c) Cholera is a viral disease
(d) AIDS can be prevented by vaccination.

Answer: A

Question. A carrier is a human being that
(a) functions as a reservoir of infection
(b) possesses pathogen but is not harmed
(c) contains antibodies sufficient enough to balance the antigen
(d) all of the options

Answer: D

Question. World Health Day Is On.
(a) 1ST May
(b) 7TH April
(c) 30th June
(d) 5th December

Answer: B

Question. The antigen present in pathogen is
(a) a specific protein involved in metabolism
(b) polysaccharide synthesized by it in the host
(c) a specific protein or polysaccharide present on its coat
(d) any of the two, A, or B.

Answer: C

Question. Droplet infection is a mode of.
(a) direct transmission
(b) indirect transmission
(c) pathogen spread through mosquitoes
(d) tomite transmission

Answer: A

Question. AIDS day.
(a) May 1
(b) December 20
(c) June 1
(d) December 1

Answer: D

Question. Health is.
(a) Complete physical well being
(b) mental well being
(c) social well being
(d) all of the options

Answer: D

Question. Antibodies are.
(a) lipids
(b) genes
(c) proteins
(d) carbohydrates

Answer: C

Question. Remain healthy means
(a) free of infection by pathogen
(b) tension free mental status
(c) Living in a pollution free environment
(d) All of the options

Answer: D

Question. Diseases occurring due to infected articles of a patient are called
(a) Air borne
(b) Water borne
(c) Fomite borne
(d) Food bome

Answer: C

Question. Which are intimately related.
(a) Diseases and health
(b) Body and health
(c) Body and mind
(d) Body and spiritual health

Answer: D

Question. A noninfectious unnatural and unusual reaction to a substance or condition is
(a) immunity
(b) allergy
(c) infection
(d) toxin

Answer: B

Question. Pulse polio programme is organised in our country for.
(a) curing polio
(b) eradicating polio
(c) spreading polio
(d) non of the options

Answer: B

Question. Pathogens are destroyed by
(a) kidneys
(b) liver
(c) tonsils
(d) lymphatic tissues

Answer: D