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Provide me latest MCQ Questions for Class 9 Science Chapter 13 Why Do We Fall Ill? Free PDF Download so I can prepare for exams. Kindly give Chapter 13 Why Do We Fall Ill? Class 9 Science MCQs Questions with Answers quickly as it is very essential.

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Below you will find MCQ Questions of Chapter 13 Why Do We Fall Ill? Class 9 Science Free PDF Download that will help you in gaining good marks in the examinations and also cracking competitive exams. These Class 9 MCQ Questions with answers will widen your skills and understand concepts in a better manner.

Chapter 13 Why Do We Fall Ill? Class 9 Science MCQs Questions with Answers

MCQ Questions for Class 9 Science Chapter 13 Why Do We Fall Ill? with answers

1. Elephantiasis is a disease that result in:

(a) Long-term effects on health

(b) Short-term effects on health

(c) No effect on health

(d) Occasional bad effects on health

► (a) Long-term effects on health

2. What would happen if no agency is ensuring that garbage is collected and disposed off?

(a) The garbage will begin decomposing faster

(b) People will stop producing garbage

(c) Surroundings will be unhygienic and create many health-related problems for the people

(d) No change will be seen in the surroundings

► (c) Surroundings will be unhygienic and create many health-related problems for the people

3. Breathing polluted air causes diseases of the

(a) Nervous system

(b) Circulatory system

(c) Respiratory system

(d) Digestive system

► (c) Respiratory system

4. Ascara lumbricoides causes damage to our

(a) brain

(b) intestine

(c) liver

(d) lower limbs

► (b) intestine

5. Infection by HIV affects the body's ability to fight infection by damaging the ________.

(a) digestive system

(b) immune system

(c) circulatory system

(d) reproductive system

► (b) immune system

6. Choose the wrong statement:

(a) High blood pressure is caused by excessive weight and lack of exercise.

(b) Cancers can be caused by genetic abnormalities.

(c) Peptic ulcers are caused by eating acidic food.

(d) Acne is caused by Staphylococci.

► (c) Peptic ulcers are caused by eating acidic food.

7. Immunisation/Vaccination started with

(a) L. Pasteur

(b) A. Fleming

(c) E. Jenner

(d) J.E. Salk

► (c) E. Jenner

8. Elephantiasis disease can have

(a) short-term affect on our health

(b) no effect on our health

(c) long term affect on our health

(d) sometimes bad effect on our health

► (c) long term affect on our health

8. Mosquitoes spread

(a) Influenza

(b) Rabies

(c) Malaria

(d) AIDS

► (c) Malaria

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

(a) Ascaris

(b) Trypanosoma

(c) Leishmama

(d) Bacteria

► (c) Leishmama

10. The disease that can be transmitted through body fluids are :-

(a) TB and cholera

(b) Typhoid and cholera

(c) Cholera and rabies

(d) AIDS and hepatitis B

► (d) AIDS and hepatitis B

11. Main sugar present in the honey is

(a) maltose

(b) Levulose

(c) Dextrose

(d) Ribose

► (b) Levulose

12. Sleeping sickness is caused by (i) ________ , which is a (ii) ___________.

(a) (i) Leishmania, (ii) protozoan

(b) (i) Trypanosoma, (ii) protozoan

(c) (i) Staphylococcus, (ii) bacterium

(d) (i) Trypanosoma, (ii) bacterium

► (b) (i) Trypanosoma, (ii) protozoan

13. Diseases affect the organs depending on the point of entry into the body. Identify the disease from the following, which enters our body through a mosquito bite and reaches the brain:

(a) Polio

(b) Malaria

(c) Dengue

(d) Encephalitis

► (d) Encephalitis

14. AIDS cannot be transmitted by:

(a) sexual contact

(b) hugs

(c) breastfeeding

(d) blood transfusion

► (b) hugs

15. Which of the following is not a symptom of any disease?

(a) Meningitis

(b) Headache

(c) Cough

(d) Swelling

► (a) Meningitis

16. Typhoid is an infectious disease caused by:

(a) Virus

(b) Bacteria

(c) Protozoan

(d) Worm

► (b) Bacteria

17. A healthy person is one who is free from

(a) Disease

(b) Mental tension

(c) Disease and mental tension

(d) Bacteria

► (c) Disease and mental tension

18. Which of the following is due to external causes ?

(a) Jaundice

(b) Diabetes

(c) Arthritis

(d) Cataract

► (a) Jaundice

19. Identify the group among the following, which contains all bacterial diseases:

(a) Typhoid, tuberculosis, anthrax

(b) Malaria, anthrax, typhoid

(c) Kala-azar, influenza, tuberculosis

(d) Tuberculosis, anthrax, dengue

► (a) Typhoid, tuberculosis, anthrax

20. Tuberculosis is caused by

(a) A bacterium

(b) A virus

(c) A protozoan

(d) Air pollution

► (a) A bacterium

21. For the prevention of the dehydration, the patient is advised to take Oral Rehydration Solution (ORS). The main components of ORS solution are:

(a) Sodium carbonate, sodium bicarbonate, potassium chloride, glucose, sucrose and water

(b) Sodium chloride, sodium carbonate, potassium chloride, glucose, sucrose and water

(c) Sodium chloride, sodium bicarbonate, potassium chloride, glucose, sucrose and water

(d) Sodium chloride, sodium bicarbonate, potassium chloride, glucose, sucrose and water

► (c) Sodium chloride, sodium bicarbonate, potassium chloride, glucose, sucrose and water

22. The infectious agents responsible for which disease can be spread when the patient coughs ?

(a) AIDS, TB and hepatitis

(b) TB, influenza and cholera

(c) TB and influenza

(d) TB and hepatitis

► (c) TB and influenza

23. Which one of the following is milch breed of cow ?

(a) Nageri

(b) Malvi

(c) Gir

(d) Mallikar

► (c) Gir

24. A condition of failure of function of kidney to form urine is

(a) Creatinine

(b) Hematuria

(c) Alkaptoneuria​

(d) Anuria

► (d) Anuria

25. ‘Public cleanliness is important for individual health’. Which of the following is an example of this statement?

(a) Brushing our teeth and taking bath everyday keeps our body clean

(b) Collecting and cleaning of garbage cans on the street regularly helps to prevent the spread of diseases

(c) Clean rooms in our houses are essential for healthy living

(d) Cutting nails regularly prevents dirt accumulation and infection in the nails

► (b) Collecting and cleaning of garbage cans on the street regularly helps to prevent the spread of diseases

26. Which one is the characteristic of epithelial tissue:

(a) Tissues are highly vascularized

(b) These cells never produce glands

(c) The cells will have a rapid rate of cell division

(d) Large intercellular spaces are seen between cells

► (c) The cells will have a rapid rate of cell division

27. Providing living conditions that are not crowded, can help to prevent

(a) air-borne diseases

(b) water-borne diseases

(c) vector-borne diseases

(d) sexually transmitted diseases

► (a) air-borne diseases

28. The severity of the disease manifestation depends on

(a) the number of microbes causing the disease

(b) the nutrition we have

(c) the organ infected/affected

(d) the strength of the infectious agent

► (a) the number of microbes causing the disease

Hope the given MCQ Questions will help you in cracking exams with good marks. These Why Do We Fall Ill? MCQ Questions will help you in practising more and more questions in less time.

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