R4RIN – MCQs, Mock Tests | NCERT Class 9 Class 9 Science Chapter 13 Why do we Fall Ill

Which one of the following is not a viral disease?

1. Dengue
2. AIDS
3. Typhoid
4. Influenza

✅ Correct Answer: 3

Which one of the following is not a bacterial disease?

1. Cholera
2. Tuberculosis
3. Anthrax
4. Influenza

✅ Correct Answer: 4

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

1. Brain fever
2. Malaria
3. Typhoid
4. Dengue

✅ Correct Answer: 3

Which one of the following disease is not caused by bacteria?

1. Typhoid
2. Anthrax
3. Tuberculosis
4. Malaria

✅ Correct Answer: 4

Which one of the following diseases is caused by protozoans?

1. Malaria
2. Influenza
3. AIDS
4. Cholera

✅ Correct Answer: 1

Which one of the following has a long term effect on the health of an individual?

1. Common cold
2. Chicken pox
3. Chewing tobacco
4. Stress

✅ Correct Answer: 3

Why Do We Fall Ill MCQ Questions With Answers Question 7.

1. High blood pressure
2. Genetic abnormalities
3. Sneezing
4. Blood cancer

✅ Correct Answer: 3

AIDS cannot be transmitted by

1. sexual contact
2. hugs
3. breast feeding
4. blood transfusion

✅ Correct Answer: 2

Making anti-viral drugs is more difficult than making anti-bacterial medicines because

1. viruses make use of host machinery
2. viruses are on the border line of living and non-living
3. viruses have very few biochemical mechanisms of their own
4. viruses have a protein coat

✅ Correct Answer: 3

Which one of the following causes kala-azar?

1. Ascaris
2. Trypanosoma
3. Leishmania
4. Bacteria

✅ Correct Answer: 3

If you live in a overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases:

1. Cancer
2. AIDS
3. Air borne diseases
4. Cholera

✅ Correct Answer: 3

Which disease is not transmitted by mosquitoes?

1. Dengue
2. Malaria
3. Brain fever or encephalitis
4. Pneumonia

✅ Correct Answer: 4

Which one of the following is not important for individual health?

1. Living in clean space
2. Good economic condition
3. Social equality and harmony
4. Living in a large and well furnished house

✅ Correct Answer: 4

Choose the wrong statement.

1. High blood pressure is caused by excessive weight and lack of exercise.
2. Cancers can be caused by genetic abnormalities.
3. Peptic ulcers are caused by eating acidic food.
4. Acne in not caused by staphylococci.

✅ Correct Answer: 3

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

1. multiply very fast and cause pollution
2. are vectors for many diseases
3. bite and cause skin diseases
4. are not important insects

✅ Correct Answer: 2

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

1. vaccination kills the polio causing microorganisms
2. prevents the entry of polio causing organism
3. it creates immunity in the body
4. all the above

✅ Correct Answer: 3

Viruses, which cause hepatitis, are transmitted through

1. air
2. water
3. food
4. personal contact

✅ Correct Answer: 2

Vectors can be defined as

1. animals carry the infecting agents from sick person to another healthy person
2. microorganisms which cause many diseases
3. infected person
4. diseased plants

✅ Correct Answer: 1