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NCERT Class 9 MCQ Quiz Hub
Class 9 Science Chapter 13 Why do we Fall Ill
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1. Which one of the following is not a viral disease?
Dengue
AIDS
Typhoid
Influenza
2. Which one of the following is not a bacterial disease?
Cholera
Tuberculosis
Anthrax
Influenza
3. Which one of the following disease is not transmitted by mosquito?
Brain fever
Malaria
Typhoid
Dengue
4. Which one of the following disease is not caused by bacteria?
Typhoid
Anthrax
Tuberculosis
Malaria
5. Which one of the following diseases is caused by protozoans?
Malaria
Influenza
AIDS
Cholera
6. Which one of the following has a long term effect on the health of an individual?
Common cold
Chicken pox
Chewing tobacco
Stress
7. Why Do We Fall Ill MCQ Questions With Answers Question 7.
High blood pressure
Genetic abnormalities
Sneezing
Blood cancer
8. AIDS cannot be transmitted by
sexual contact
hugs
breast feeding
blood transfusion
9. Making anti-viral drugs is more difficult than making anti-bacterial medicines because
viruses make use of host machinery
viruses are on the border line of living and non-living
viruses have very few biochemical mechanisms of their own
viruses have a protein coat
10. Which one of the following causes kala-azar?
Ascaris
Trypanosoma
Leishmania
Bacteria
11. If you live in a overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases:
Cancer
AIDS
Air borne diseases
Cholera
12. Which disease is not transmitted by mosquitoes?
Dengue
Malaria
Brain fever or encephalitis
Pneumonia
13. Which one of the following is not important for individual health?
Living in clean space
Good economic condition
Social equality and harmony
Living in a large and well furnished house
14. Choose the wrong statement.
High blood pressure is caused by excessive weight and lack of exercise.
Cancers can be caused by genetic abnormalities.
Peptic ulcers are caused by eating acidic food.
Acne in not caused by staphylococci.
15. We should not allow mosquitoes to breed in our surroundings because they
multiply very fast and cause pollution
are vectors for many diseases
bite and cause skin diseases
are not important insects
16. You are aware of Polio Eradication Programme in your city. Children are vaccinated because
vaccination kills the polio causing microorganisms
prevents the entry of polio causing organism
it creates immunity in the body
all the above
17. Viruses, which cause hepatitis, are transmitted through
air
water
food
personal contact
18. Vectors can be defined as
animals carry the infecting agents from sick person to another healthy person
microorganisms which cause many diseases
infected person
diseased plants
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