ASSET QUIZ - 8.3

1. The bottles made of plastic are advantageous as

• A. Plastic does not react        

• B. They are chemical-resistant

• C. They are shatterproof

• D. All of the above
  
  
  

2. Read the statements carefully, which is the incorrect option?
a. Plastic can be transparent or opaque         

b. Plastics can be molded into any shape.                                   c. Plastics react with the food.

• A. All the statements a, b, and c are correct

• B. Option a and option b are incorrect.

• C. Option b is incorrect

• D. All the statements a, b and c is incorrect.

3. a. Ceramics are good electrical insulators.
b. Both ceramics & glasses are good electrical insulation.
C. Both ceramics & glasses are poor electrical insulation.
d. Glasses are good electrical insulators.
Identify the correct statement.

• b

• a

• d

• c

4. Examples for fibres obtained synthetically.

• Cotton

• Wool

• Jute

• Nylon

5. Plastics can be used at high temperatures. Yes/No. Justify.

• A. No, because they are not heat-resistant and melt on heating.
  
  

• B. Yes, because they are heat resistant and do not melt on heating.

• C. No, because they can be molded and added different colours.
  
  

• D. Yes, because they can be recycled.

6. Read the above statement carefully and choose the option which would best suit the property of glass.

• A. Transparent, waterproof, react, cannot be recycled.

• B. Opaque, not waterproof, do not react, can be recycled.

• C. Transparent, waterproof, do not react, can be recycled

• D. Opaque, waterproof, react, can be recycled.

7. What is the property of a material that describes its ability to resist deformation under stress?

• Density

• Hardness

• Tensile strength

• Conductivity

8. Which property of a material refers to its ability to be drawn into thin wires?

• Malleability

• Brittleness

• Ductility

• Hardness

9. What is the measure of a material’s resistance to scratching?

• Toughness

• Brittleness

• Hardness

• Elasticity

10. Which property describes a material’s ability to return to its original shape after deformation when the applied stress is removed?

• Elasticity

• Plasticity

• Toughness

• Brittleness