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Why Do We Fall Ill? CBSE Class 9

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Why Do We Fall Ill? Topics

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Question 1/20

Q 1. Which of the following has a long-term effect on the health of an individual?

Solution

Tobacco chewing has a long-term effect on the health of the individual. 

Q 2. Which of the following is a chronic disease?

Solution

Diabetes mellitus is a chronic disease caused by inherited and/or acquired deficiency in the production of insulin by the pancreas. 

Q 3. Which of the following is not a viral disease?

Solution

Typhoid is bacterial disease caused by Salmonella typhi. 

Q 4. Mosquito is not a vector for

Solution

Typhoid fever is caused by Salmonella typhi bacteria. 

Q 5. Which of the following is an airborne disease?

Solution

Diphtheria is a bacteria caused by Corynebacterium diphtheriae which is spread through air. 

Q 6. The only way to get all the nutrients you need is

Solution

All the nutrients we eat are a combination of carbohydrates, proteins and fats which is a perfect balanced diet. 

Q 7. Which of the following causes kala azar?

Solution

Kala azar is a chronic infectious disease caused by parasites of the Leishmania donovani complex. 

Q 8. Which health refers to individuals emotional well-being?

Solution

Mental health refers to an individuals emotional and psychological well-being. 

Q 9. Being healthy means being

Solution

It is not necessary that being healthy means being disease-free. 

Q 10. What is required for being healthy and disease-free?

Solution

To be disease-free, balanced diet, good sanitation and personal hygiene are necessary. 

Q 11. Hepatitis is transmitted by

Solution

Transmission of hepatitis is chiefly caused by drinking contaminated water or eating contaminated food. 

Q 12. The practice of keeping our body clean to prevent infection and illness is called

Solution

Hygiene is the practice of keeping our body clean to prevent infection and illness. 

Q 13. Rich sources of Vitamin B are

Solution

Liver is a rich source of Vitamin B. 

Q 14. Which of the following is not a healthy habit?

Solution

We should stay away from alcohol, narcotic drugs and smoking as these are habit-forming and have a harmful effect on our health. They also cause physical weakness, high blood pressure and heart diseases. 

Q 15. Which of the following is not a reason for following a vegetarian diet?

Solution

All the options are valid reasons. 

Q 16. Indications that arise because of a particular disease are called

Solution

Symptoms are indications which help in diagnosing a disease or problem affecting the body. 

Q 17. Which of the following is a fungal infection?

Solution

Ringworm of the body is a fungal infection which develops on the top layer of the skin. 

Q 18. What is the state of complete physical, mental and social well-being?

Solution

Health is the state of complete physical, mental and social well-being. 

Q 19. What are the major factors which affect health?

Solution

Major factors which affect health are nutrition, physical activity and personal hygiene. 

Q 20. Which of the following is an incorrect statement about BMR?

Solution

A warmer body temperature tends to increase metabolism. 

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