10th Class Chemistry Chapter 12 Test12. Polymers

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Which of the following best defines polymers?
   1. Small molecules bonded together to form large molecules
   2. Large molecules built up from many smaller molecules called monomers
   3. Simple molecules consisting of one type of atom
   4. Large molecules made up of metals and non-metals
2. Polymers are formed by joining together many:
   1. Ions
   2. Atoms
   3. Monomers
   4. Molecules
3. Incineration of plastics can release:
   1. Oxygen
   2. Fertilizers
   3. Harmful chemicals and greenhouse gases
   4. Water vapours only
4. Nylon-6,6 has which of the following properties?
   1. Low strength and elasticity
   2. Resistance to abrasion and chemicals
   3. Weak and brittle nature
   4. Poor water resistance
5. Nylon-6,6 is commonly used for making:
   1. Fruit juice containers
   2. Toothbrushes
   3. Food packaging products
   4. Garbage bags
6. In addition polymers, the monomers usually contain:
   1. Double bonds
   2. Triple bonds
   3. Single bonds
   4. Ionic bonds
7. Accumulation of plastics in oceans causes:
   1. Decrease in marine biodiversity
   2. Increase in soil fertility
   3. Recycling of plastic naturally
   4. Neutral effect on marine life
8. Which statement is not true about PET?
   1. It cannot be recycled
   2. It is a polyamide
   3. It can be converted back into monomers and re-polymerised
   4. It is used only in textiles
9. Polyethylene (PE) is:
   1. Stiff and brittle
   2. Flexible and moisture-resistant
   3. Heat-resistant only
   4. Transparent and rigid
10. Polyesters are formed from:
    1. Dicarboxylic acids and diamines
    2. Dicarboxylic acids and diols
    3. Diols and diamines
    4. Monocarboxylic acids and diols