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.

This CBSE Class 7 Science practice quiz has 18 multiple-choice questions on Plastic and Its Uses, and 18 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz 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.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What characteristic makes plastics suitable for packaging?
2. Why is plastic often used to make water pipes?
3. What makes plastic bags harmful to the environment?
4. What advantage does plastic packaging have over glass?
5. What is one environmental concern related to plastic use?
6. Which of the following is a disadvantage of plastic?
7. Why is plastic considered a versatile material?
8. How does plastic use affect marine life?
9. Which innovation has made recycling of plastics easier?
10. Why are thermoplastics widely used?
11. Which type of plastic is often used in manufacturing bottles?
12. What impact does UV light have on plastics?
13. What is the effect of plasticizers in polymer products?

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