CBSE Class 9 Science Chapter 13 Why do we fall ill MCQ Question Answers


NCERT Class 9 Science Chapter 13 “Why do we fall ill”  MCQs Multiple Choice Questions with Answers


Why do we fall ill MCQs – Here is a compilation of Free MCQs of Class 9 Science Book Chapter 13 Why do we fall ill with Answers.  Students can practice free MCQs as have been added by CBSE in the new Exam pattern. At the end of Multiple- Choice Questions, the answer key also has been provided for your reference. Also, Take Free Online MCQ Test for Class 9.



Q.1. Which of the following diseases is caused by a protozoan?

(a) Typhoid

(b) Common Cold

(c) AIDS

(d) Malaria 


Q.2. Diseases caused by fungi: 

(a) Skin infection

(b) Cold and cough

(c) AIDS

(d) Malaria


Q.3. Headache is an example of ______disease.

(a) air-borne

(b) acute 

(c) infectious

(d) chronic 


Q.4. Diseases where microbes are the immediate cause are called ____________ Disease.

(a) non-infectious

(b) acute

(c) chronic

(d) infectious


Q.5. Identify the disease which is caused by bacteria. 

(a) Influenza

(b) Common cold

(c) Anthrax

(d) AIDS



Q.6. Which among the following diseases is not infectious?

(a) Cancer

(b) Typhoid

(c) Malaria

(d) Cholera


Q.7. Antibiotics work against ______.

(a) elephantiasis

(b) virus

(c) bacteria

(d) parasites


Q.8. The disease that an infected mother can transmit to her baby through breast feeding is 

(a) AIDS 

(b) Malaria

(c) Kala-azar

(d) Elephantiasis


Q.9. The method of immunisation was first tried by ________.

(a) Edward Jenner

(b) Robert Hooke

(c) Louis Hook

(d) Louis Pasteur 



Q.10. The protozoa that causes kala-azar is _________.

(a) Leishmania

(b) Ascaris

(c) Trypanosoma

(d) Plasmodium


Q.11. Identify the odd one from the following.

(a) Diphtheria

(b) Cancer 

(c) Tetanus

(d) Whooping cough


Q.12. Listed below are a few diseases.

(i) Tuberculosis

(ii) Cancer

(iii) Common cold

(iv) Viral fever


From the above-mentioned diseases, which are classified as acute diseases?

(a) (i) and (ii)

(b) (ii) and (iii)

(c) (iii) and (iv)

(d) (i) and (iv)  


Q.13. The disease which is transmitted by sexual contact is _____.

(a) malaria

(b) syphilis 

(c) kala-azar

(d) elephantiasis


Q.14. The AIDS virus cannot be transmitted by

(a) sexual contact

(b) blood transfusion 

(c) breast feeding

(d) hugs and hand shake


Q.15. The disease that affects the human brain is 

(a) Malaria

(b) Dengue fever

(c) Jaundice

(d) Japanese encephalitis


Answer Key for Class 9 Science Chapter 13 Why do we fall ill MCQs



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