Practice MCQs for Class 9 Science Chapter 13 Why Do We Fall Ill
Review structured MCQ sets for Class 9 Science Chapter 13 Why Do We Fall Ill. Built according to official CBSE guidelines, these downloadable questions support daily revision and core concept reinforcement.
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Access the complete set of multiple-choice questions for Chapter 13 Why Do We Fall Ill below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official CBSE textbooks.
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
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Download Chapter MCQs: Class 9 Science Chapter 13 Why Do We Fall Ill
About Chapter 13 Why Do We Fall Ill MCQs for Class 9 Science
Review structured objective questions for Class 9 Science Chapter 13 Why Do We Fall Ill. Built according to official CBSE guidelines, these MCQ sets support daily revision and core concept reinforcement.
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FAQs
You can get most exhaustive CBSE Class 9 Science Why Do We Fall Ill MCQs Set 03 for free on StudiesToday.com. These MCQs for Class 9 Science are updated for the 2026-27 academic session as per CBSE examination standards.
Yes, our CBSE Class 9 Science Why Do We Fall Ill MCQs Set 03 include the latest type of questions, such as Assertion-Reasoning and Case-based MCQs. 50% of the CBSE paper is now competency-based.
By solving our CBSE Class 9 Science Why Do We Fall Ill MCQs Set 03, Class 9 students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the Science.
Yes, Science MCQs for Class 9 have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused CBSE exams.
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