Question Paper
Class / Subject: Class 7 (ICSE) · Science
Chapter: Chapter 21 — Chapter 21: Allergy
Time Allowed: 32 minutes
Max Marks: 16
1. What is an allergy? [1]
(A) An immune overreaction to a harmless substance
(B) A type of infection
(C) A type of injury
(D) Nothing specific
2. What is an example of an allergen? [1]
(A) Pollen
(B) Water
(C) Air
(D) Sunlight always
3. What are common allergy symptoms? [1]
(A) Sneezing, itching, rashes
(B) Only broken bones
(C) Only fever
(D) Nothing specific
4. What is anaphylaxis? [1]
(A) A severe allergic reaction causing breathing difficulty
(B) A mild symptom only
(C) A type of allergen
(D) A type of medicine
5. What does the immune system mistakenly do? [1]
(A) Identifies the allergen as harmful
(B) Ignores all substances
(C) Never reacts to anything
(D) Always reacts correctly
6. What chemical causes allergy symptoms? [1]
(A) Histamine
(B) Oxygen
(C) Water
(D) Glucose
7. How can allergies be managed? [1]
(A) Avoiding allergens and taking medication
(B) Ignoring the allergy completely
(C) Only through surgery always
(D) There's no way to manage them
8. Why understand allergies? [1]
(A) To manage symptoms and seek help when needed
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is an allergy? [1]
(A) An immune overreaction to a harmless substance
(B) A type of infection
(C) A type of injury
(D) Nothing specific
10. What is an example of an allergen? [1]
(A) Pollen
(B) Water
(C) Air
(D) Sunlight always
11. What are common allergy symptoms? [1]
(A) Sneezing, itching, rashes
(B) Only broken bones
(C) Only fever
(D) Nothing specific
12. What is anaphylaxis? [1]
(A) A severe allergic reaction causing breathing difficulty
(B) A mild symptom only
(C) A type of allergen
(D) A type of medicine
13. What does the immune system mistakenly do? [1]
(A) Identifies the allergen as harmful
(B) Ignores all substances
(C) Never reacts to anything
(D) Always reacts correctly
14. What chemical causes allergy symptoms? [1]
(A) Histamine
(B) Oxygen
(C) Water
(D) Glucose
15. How can allergies be managed? [1]
(A) Avoiding allergens and taking medication
(B) Ignoring the allergy completely
(C) Only through surgery always
(D) There's no way to manage them
16. Why understand allergies? [1]
(A) To manage symptoms and seek help when needed
(B) No reason
(C) It's not useful
(D) Only for tests