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Chapter 15 of 19
Important Questions

Hygiene a Key to Healthy Life

ICSE · Class 9 · Biology

Most important questions from Hygiene a Key to Healthy Life for ICSE Class 9 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

44 questions38 flashcards5 concepts

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An infographic illustrating the main categories of hygiene: personal hygiene and social/public hygiene, with key components for each.
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44 Questions·
multiple choicemultiple correcttrue false

Sample Questions

1multiple correct

Select ALL correct practices for maintaining oral hygiene:

Show answer

Brush teeth twice daily, Rinse mouth after meals, Clean teeth before bed

Good oral hygiene requires brushing twice daily, rinsing after meals, and cleaning before bed. Eating too many sweets and sharing toothbrushes can cause infections.

2true false

One should always breathe through the nose and never through the mouth.

Show answer

True

Breathing through the nose filters, warms, and moistens the air. The nose has hair and mucus that trap dust and germs.

3multiple correct

Which diseases can houseflies spread? Select ALL correct answers:

Show answer

Cholera, Typhoid, Dysentery, Trachoma

Houseflies spread cholera, typhoid, dysentery, and trachoma by carrying germs on their hairy bodies. Malaria is spread by mosquitoes, not flies.

4true false

Contamination of water means unwanted entry of disease germs into drinking water.

Show answer

True

Contamination is defined as the unwanted entry of disease germs into drinking water or edible foods, making them unsafe for consumption.

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Frequently Asked Questions

What are the important topics in Hygiene a Key to Healthy Life for ICSE Class 9 Biology?
Hygiene a Key to Healthy Life covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Hygiene a Key to Healthy Life — ICSE Class 9 Biology?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Hygiene a Key to Healthy Life?
There are 44 practice questions available for Hygiene a Key to Healthy Life. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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