Access the latest CBSE Class 9 Science Why Do We Fall ill Worksheet Set B. We have provided free printable Class 9 Science worksheets in PDF format, specifically designed for Chapter 13 Why Do We Fall Ill. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.
Chapter 13 Why Do We Fall Ill Science Practice Worksheet for Class 9
Students should use these Class 9 Science chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Chapter 13 Why Do We Fall Ill, to help you prepare for school tests and final examination. Regular practice of these Class 9 Science questions will help improve your problem-solving speed and exam accuracy for the 2026 session.
Download Class 9 Science Chapter 13 Why Do We Fall Ill Worksheet PDF
Question. Health is.
(A) Complete physical well being
(B) mental well being
(C) social well being
(D) all of the above
Answer : D
Question. Dislocation is a disease caused by
(A) Biological agent
(B) mechanical agent
(C) physical agent
(D) chemical agent
Answer : C
Question. Pathogens are destroyed by
(A) kidneys
(B) liver
(C) tonsils
(D) lymphatic tissues
Answer : D
Question. Antibodies are.
(A) lipids
(B) genes
(C) proteins
(D) carbohydrates
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. 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 above
Answer : D
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. Specific defence mechanism against disease comprises
(A) physical barrier
(B) lysozme
(C) phagocytes
(D) immune system
Answer : D
Question. World Health Day Is On.
(A) 1ST May
(B) 7TH April
(C) 30th June
(D) 5th December
Answer : B
Question. A noninfectious unnatural and unusual reaction to a substance or condition is
(A) immunity
(B) allergy
(C) infection
(D) toxin
Answer : B
Question. AIDS day.
(A) May 1
(B) December 20
(C) June 1
(D) December 1
Answer : D
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. 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. 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 above
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. Pulse polio programme is organised in our country for.
(A) curing polio
(B) eradicating polio
(C) spreading polio
(D) non of the above
Answer : B
Click below to download practice worksheet for CBSE Class 9 Science Why Do We Fall ill Worksheet Set B
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Important Practice Resources for Class 9 Science
Chapter 13 Why Do We Fall Ill CBSE Class 9 Science Worksheet
Students can use the Chapter 13 Why Do We Fall Ill practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 9 Science. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.
NCERT Based Questions and Solutions for Chapter 13 Why Do We Fall Ill
Our expert team has used the official NCERT book for Class 9 Science to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions which will help you to understand the best way to solve problems in Science. You can get all this study material for free on studiestoday.com.
Extra Practice for Science
To get the best results in Class 9, students should try the Science MCQ Test for this chapter. We have also provided printable assignments for Class 9 Science on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.
You can download the teacher-verified PDF for CBSE Class 9 Science Why Do We Fall ill Worksheet Set B from StudiesToday.com. These practice sheets for Class 9 Science are designed as per the latest CBSE academic session.
Yes, our CBSE Class 9 Science Why Do We Fall ill Worksheet Set B includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 9.
Yes, we have provided detailed solutions for CBSE Class 9 Science Why Do We Fall ill Worksheet Set B to help Class 9 and follow the official CBSE marking scheme.
Daily practice with these Science worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 9 students get more marks in CBSE exams.
All our Class 9 Science practice test papers and worksheets are available for free download in mobile-friendly PDF format. You can access CBSE Class 9 Science Why Do We Fall ill Worksheet Set B without any registration.