Health and hygiene Quiz - ICSE Class 7 Science

Free practice quiz: Health and hygiene (ICSE Class 7 Science). 51 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is a non-communicable disease that affects the skeletal system by causing bones to become brittle and prone to fractures?

   1. Influenza
   2. Osteoporosis
   3. Tuberculosis
   4. Malaria
   Show answer

   Answer: B. Osteoporosis

   Osteoporosis is a condition where bones lose density and become weak, increasing the risk of fractures. It is a non-communicable disease as it is not transmitted from person to person. Influenza, Tuberculosis, and Malaria are all communicable diseases.

2. Maintaining proper posture is important for spinal health and preventing back pain. Which of the following is NOT a recommended practice for good posture?

   1. Sitting upright with shoulders relaxed
   2. Slouching forward while working at a desk
   3. Keeping feet flat on the floor while sitting
   4. Avoiding prolonged periods of sitting without breaks
   Show answer

   Answer: B. Slouching forward while working at a desk

   Slouching puts undue stress on the spine and can lead to back pain and poor posture. Sitting upright, keeping feet flat, and taking breaks are all recommended practices for maintaining good posture.

3. The spread of vector-borne diseases can be controlled by managing the vectors. Which of the following insects is a common vector for transmitting malaria?

   1. Housefly
   2. Mosquito
   3. Cockroach
   4. Ant
   Show answer

   Answer: B. Mosquito

   Mosquitoes, specifically the Anopheles species, are the vectors that transmit the malaria parasite from an infected person to another person through their bite. Houseflies, cockroaches, and ants are not primary vectors for malaria.

4. Which of the following is a crucial practice for preventing the spread of germs on surfaces in public places?

   1. Touching surfaces frequently
   2. Avoiding hand sanitizer
   3. Wiping down frequently touched surfaces (like doorknobs) when possible
   4. Sharing personal items openly
   Show answer

   Answer: C. Wiping down frequently touched surfaces (like doorknobs) when possible

   Regularly cleaning and disinfecting frequently touched surfaces in public spaces helps to reduce the concentration of germs, thereby minimizing the risk of transmission. Touching surfaces frequently, avoiding sanitizer, and openly sharing personal items all increase the risk of germ spread.

5. Proper sanitation of drinking water is vital to prevent waterborne diseases. Which of the following methods is effective in killing most bacteria and viruses in water?

   1. Filtration through a coffee filter
   2. Aeration
   3. Boiling
   4. Adding salt
   Show answer

   Answer: C. Boiling

   Boiling water to a rolling boil for at least one minute kills most harmful microorganisms, including bacteria and viruses, making it safe to drink. Simple filtration might remove some particles but not necessarily all pathogens. Aeration and adding salt are not primary methods for water disinfection.

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