Why do we Fall Ill MCQ Questions for Class 9 Science Chapter 13 with Answers

We have completed the NCERT/CBSE chapter-wise Multiple Choice Questions for Class 9 Science book Chapter 13 Why do we Fall Ill with Answers by expert subject teacher for latest syllabus and examination. You can Prepare effectively for the exam taking the help of the Class 9 Science Objective Questions PDF free of cost from here. Students can take a free test of the Multiple Choice Questions of Why do we Fall Ill. Each Questions has four options followed by the right answer. Download the Science Quiz Questions with Answers for Class 9 free Pdf and prepare to exam and help students understand the concept very well.

MCQ Questions for Class 9 Science with Answers Biology

Q1. Which one of the following is not a bacterial disease?

(i) Cholera
(ii) Tuberculosis
(iii) Anthrax
(iv) Influenza

(iv) Influenza

Q2. Which of the following could be a cause for developing a disease?

(i) Exercising properly
(ii) Having a balanced diet
(iii) Poor personal hygiene
(iv) Getting enough sleep

(iii) Poor personal hygiene

Q4. You are aware of Polio Eradication Programme in your city. Children are vaccinated because

(i) Vaccination kills the polio causing microorganisms
(ii) Prevents the entry of polio causing organisms in the body
(iii)It creates immunity in the body
(iv) All of above

(iii) It creates immunity in the body

Q5. Which one of the following causes Kala-azar?

(i) Ascaris
(ii) Trypanosoma
(iii) Leishmania
(iv) Bacteria

(iii) Leishmania

Q6. Which is not a contributory cause of a person acquiring a water borne disease?

(i) Lack of sufficient food
(ii) Attack by bacteria
(iii) Genetic susceptibility to the disease
(iv) Lack of clean drinking water

(iii) Genetic susceptibility to the disease

Q7. Which one of the following disease is not transmitted by mosquito?

(i) Brain fever
(ii) Malaria
(iii) Typhoid
(iv) Dengue

(iii) Typhoid

Q8. TAB-vaccine is used to provide immunity against Typhoid for a period of three years.What is the correct abbreviation of TAB?

(i) Typhoid-Paratyphoid A and B Vaccine
(ii) Typhoid-Partialtyphoid A and B Vaccine
(iii)Typhoid-Peroxytyphoid A and B Vaccine
(iv) Typhoid-Pertyphoid A and B Vaccine

(i) Typhoid-Paratyphoid A and B Vaccine

Q9. Which one of the following diseases is not caused by bacteria?

(i) Typhoid
(ii) Anthrax
(iii) Tuberculosis
(iv) Malaria

(iv) Malaria

Q10. The process in which the active immune system employs many cells to the affected tissue, is called

(i) infection
(ii) infestation
(iii) invasion
(iv) inflammation

(iv) inflammation

Q11. Which one of the following diseases is caused by protozoans?

(i) Malaria
(ii) Influenza
(iii) AIDS
(iv) Cholera

(i) Malaria

Q12. Mosquitoes are often seen breeding on the stagnant water. We should not allow mosquitoes to breed in our surroundings because they

(i) multiply very fast and cause pollution
(ii) are vectors for many diseases
(iii) bite and cause skin diseases
(iv) are not important insects

(ii) are vectors for many diseases

Q13. The name of bacterial disease is

(i) Ringworm
(ii) Measles
(iii) Typhoid
(iv) Malaria

(iii) Typhoid

Q14. The vector for Yellow fever is:

(i) Mosquito
(ii) Flea
(iii) Housefly
(iv) Rat

(i) Mosquito

Q15. Which of the following can make you ill if you come in contact with an infected person?

(i) High blood pressure
(ii) Genetic abnormalities
(iii) Sneezing
(iv) Blood cancer

(iii) Sneezing

Q16. T.B. (Tuberculosis) is caused by:

(i) Vibrio Cholerae
(ii) Mycobacterium tuberculosis
(iii) HIV virus
(iv) Salmonella typhi (bacteria)

(ii) Mycobacterium tuberculosis

Q17. Antibiotics used in treatment of bacterial and fungal diseases are

(i) the names of useful bacteria
(ii) toxins produced by bacteria
(iii) drugs manufactured to kill viruses
(iv) products of metabolism in some bacteria

(iv) products of metabolism in some bacteria

Q18. Which one of the following causes kala-azar?

(i) Ascaris
(ii) Trypanosoma
(iii) Leishmania
(iv) Bacteria

(iii) Leishmania

Q19. AIDS cannot be transmitted by:

(i) sexual contact
(ii) hugs
(iii) breastfeeding
(iv) blood transfusion

(ii) hugs

Q20. The organisms which carry the infectious agents from a sick person to another potential host are known as

(i) Fomites
(ii) Causative agents
(iii) Vectors
(iv) Vehicles

(iii) Vectors

Q21. Which disease is not transmitted by mosquitoes?

(i) Dengue
(ii) Malaria
(iii) Brain fever or encephalitis
(iv) Pneumonia

(iv) Pneumonia

Q22. Viruses, which cause hepatitis, are transmitted through

(i) air
(ii) personal contact
(iii) food
(iv) water

(ii) personal contact

Q23. We should not allow mosquitoes to breed in our surroundings because they

(i) multiply very fast and cause pollution
(ii) are vectors for many diseases
(iii) bite and cause skin diseases
(iv) are not important insects

(ii) are vectors for many diseases

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