Class 12 Biology MCQs | Chapter 7: Human Health And Disease – Part 1
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Class 12 Biology MCQs | Chapter 7: Human Health and Disease – Part 1

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1. Which statement best defines health?
ⓐ. It is the state in which no visible illness is present.
ⓑ. It is the ability to work daily without feeling tired.
ⓒ. It is a state of complete physical, mental, and social well-being.
ⓓ. It is the condition in which pulse and temperature stay normal.
2. Why is “absence of disease” not a complete definition of health?
ⓐ. A person may be disease-free but still lack mental balance or healthy social life.
ⓑ. A person is healthy only after receiving every available vaccine.
ⓒ. A person becomes healthy only when all inherited traits are ideal.
ⓓ. A person is healthy only when no medicine is ever needed.
3. Which combination most directly supports maintenance of good health?
ⓐ. Heavy meals, poor hygiene, little exercise, and late sleep
ⓑ. Curative drugs, prolonged rest, self-medication, and inactivity
ⓒ. Expensive tonics, repeated fasting, late meals, and irregular sleep
ⓓ. Balanced food, clean habits, exercise, and immunisation
4. Which measure is most useful for improving health at the community level?
ⓐ. More packaged drinks, indoor living, and private treatment
ⓑ. Clean water, sanitation, and proper waste disposal
ⓒ. Longer work hours, crowded halls, and delayed sleep
ⓓ. Self-medication, overuse of tonics, and irregular meals
5. A student has no diagnosed illness, but remains severely anxious, avoids social interaction, and cannot participate normally in daily life. This most clearly shows that health includes
ⓐ. mental and social well-being
ⓑ. only muscular development
ⓒ. only freedom from infection
ⓓ. unusually strong immunity
6. Which outcome is most commonly associated with better health in a population?
ⓐ. Greater reliance on emergency treatment
ⓑ. Higher spread of preventable illness
ⓒ. More frequent maternal and infant deaths
ⓓ. Greater productivity and longer life span
7. Which pair of measures is especially important for reducing diseases spread by vectors?
ⓐ. Fasting and isolation
ⓑ. Sanitation and vector control
ⓒ. Tonic use and bed rest
ⓓ. Pain relief and warm clothing
8. Assertion (A): Personal hygiene contributes to good health. Reason (R): Hygiene reduces exposure to many disease-causing agents.
ⓐ. Both A and R are true, and R is the correct explanation of A.
ⓑ. Both A and R are true, but R is not the correct explanation of A.
ⓒ. A is true, but R is false.
ⓓ. A is false, but R is true.
9. In a locality where vaccination, sanitation, and public awareness are neglected, the most likely result is
ⓐ. better social well-being without disease control
ⓑ. rapid rise in productivity and life span
ⓒ. complete protection through natural adjustment
ⓓ. poorer well-being with greater disease risk
10. Which daily routine most directly supports both physical fitness and mental balance?
ⓐ. Frequent antibiotics and little activity
ⓑ. Irregular meals and reduced sleep
ⓒ. Regular exercise, yoga, and adequate rest
ⓓ. Long screen time and no outdoor movement
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