Plastic and Its Uses Quiz - CBSE Class 7 Science

Free practice quiz: Plastic and Its Uses (CBSE Class 7 Science). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following is often made from plastic?

   1. Paper towels
   2. Soda bottles
   3. Woolen sweaters
   4. Ceramic plates
   Show answer

   Answer: B. Soda bottles

   Soda bottles are often made from plastic because it is flexible and can hold liquids well.

2. Which property of plastic makes it useful for constructing containers?

   1. Inflammability
   2. Transparency
   3. Water resistance
   4. Heavyweight
   Show answer

   Answer: C. Water resistance

   Plastics are water-resistant, making them ideal for containers to store liquids.

3. How does plastic benefit electrical insulation?

   1. It allows flow of electricity
   2. It is lightweight
   3. It is a good conductor
   4. It prevents electrical conduction
   Show answer

   Answer: D. It prevents electrical conduction

   Plastic is an insulator, preventing the conduction of electricity, making it useful in covering wires and sockets.

4. What role do plastics play in modern medicine?

   1. They are mostly banned
   2. Used in non-essential equipment only
   3. Critical for sterilized equipment
   4. Only used for packaging
   Show answer

   Answer: C. Critical for sterilized equipment

   Plastics are crucial in medicine for making sterilized equipment like syringes and IV bags.

5. Why must we be cautious about burning plastics?

   1. It makes the air cleaner
   2. It is completely safe
   3. Releases toxic fumes
   4. It becomes water vapor
   Show answer

   Answer: C. Releases toxic fumes

   Burning plastics releases harmful toxic fumes that can be hazardous to health and the environment.

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