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CBSE · Class 8 · Science

Health: The Ultimate Treasure

Standard difficulty · 20 questions · 40 marks

Name: Date: Score: ____ / 40

Show your working for Sections B and C. Answers are on the last page — try every question first!

Section A — Choose the correct answer8 × 1 = 8 marks
1.
According to the WHO, health means:
  1. being strong only
  2. eating a lot
  3. not having a fever
  4. physical, mental and social well-being, not just the absence of disease
2.
Measles is caused by a:
  1. fungus
  2. roundworm
  3. virus
  4. protozoa
3.
Which of these is a COMMUNICABLE disease?
  1. goitre
  2. asthma
  3. diabetes
  4. measles
4.
Which of these is a NON-COMMUNICABLE disease?
  1. goitre
  2. chickenpox
  3. cholera
  4. dengue
5.
Common cold spreads mainly through:
  1. cold weather
  2. air and direct contact
  3. sunlight
  4. air (coughs and sneezes)
6.
Which of these is a SIGN (seen or measured), not a symptom?
  1. a stomach ache
  2. feeling dizzy
  3. a fever of 39 °C
  4. tiredness
7.
A doctor prescribes an antibiotic: 2 tablets a day for 8 days. How many tablets should be taken in all?
  1. 16 tablets
  2. 8 tablets
  3. 10 tablets
  4. 14 tablets
8.
A vaccination camp gives 25 doses an hour for 6 hours. How many doses are given?
  1. 175 doses
  2. 31 doses
  3. 150 doses
  4. 125 doses
Section B — Short answer8 × 2 = 16 marks
9.
What is the difference between a symptom and a sign?
10.
What causes each — a virus, bacteria, protozoa or a roundworm? (a) typhoid (b) malaria
11.
Write "communicable" or "non-communicable": (a) diabetes (b) typhoid
12.
Is it a "symptom" or a "sign"? (a) a swollen ankle (b) feeling dizzy
13.
How does each spread, and how can it be prevented? (a) tuberculosis (b) hepatitis A
14.
A town recorded these dengue cases: June 71, July 75, August 76, September 13. How many cases in all? In which month were there most?
15.
In a class of 43, 6 children caught flu in a week. How many did not? Give one way the others can avoid it.
16.
Penicillin was discovered in 1928 and smallpox was eradicated in 1979. How many years apart are these? How many years after 1979 is 2034?
Section C — Word problems4 × 4 = 16 marks
17.
Explain how a vaccine protects us.
18.
For chickenpox, common cold, typhoid: name the cause, one way it spreads, and one way to prevent it.
19.
Ravi was prescribed 2 antibiotic tablets a day for 7 days. He felt better after 6 days and stopped. (a) How many tablets should he have taken? (b) How many did he take? (c) Why is stopping early harmful?
20.
Sort into communicable and non-communicable: cancer, heart disease, chickenpox, typhoid. For one non-communicable disease, suggest two lifestyle habits that lower the risk.
AmbifulWorksheets
Practice that never repeats
CBSE · Class 8 · Science

Answer key

Health: The Ultimate Treasure · AW-8S-HLT-2026-V1 · For parents — fold back or tear off before handing the sheet to your child.

QAnswerWorking
1(d) physical, mental and social well-being, not just the absence of disease—
2(c) virus—
3(d) measles—
4(a) goitre—
5(d) air (coughs and sneezes)—
6(c) a fever of 39 °C—
7(a) 16 tablets2 × 8 = 16
8(c) 150 doses25 × 6 = 150
9A symptom is felt by the patient (pain); a sign can be seen or measured (fever, rash).—
10(a) bacteria (b) protozoa—
11(a) non-communicable (b) communicable—
12(a) sign (b) symptom—
13(a) air (coughs and sneezes) (b) contaminated food and water—
14235 cases; August71 + 75 + 76 + 13
1537; for example wash hands often and cover coughs43 − 6
1651 years; 55 years1979 − 1928; 2034 − 1979
17A vaccine contains a weakened or dead germ or a harmless part of it. It trains the body's defence system to recognise the germ, so if the real germ enters later, the body fights it quickly. Vaccines prevent disease; they do not cure it.—
18chickenpox: virus; common cold: virus; typhoid: bacteria. Spread and prevention, for example: mosquitoes (no standing water, nets); food and water (boiled water, clean food, handwashing); air (cover coughs, keep rooms airy, vaccination where available).—
19(a) 14 (b) 12 (c) Some bacteria survive and may become resistant, so the illness can return and the antibiotic may stop working.—
20Communicable: chickenpox, typhoid. Non-communicable: cancer, heart disease. Habits, for example: balanced diet, regular exercise, no tobacco.—