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Punjab (PTB) · Quarter book test · Free

10th Class Chemistry 4th Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: CHAP 26: POLYMERS.

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10th Class Chemistry 4th Quarter Book Paper

10th Class · Chemistry · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 40Time: 1 hour

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

  1. Which monomer is polymerized to produce polypropylene?

    1. Propylene

    2. Ethylene

    3. Styrene

    4. Vinyl Chloride

  2. Which of the following monomer is polymerized to produce polystyrene?

    1. Ethylene

    2. Vinyl chloride

    3. Styrene

    4. Propylene

  3. Burning discarded plastic articles in towns creates hazardous environmental conditions because it:

    1. Absorbs carbon dioxide

    2. Produces cooling effects

    3. Cleans the atmosphere

    4. Releases dangerous gases into the air

  4. Which polymer has an amide linkage:

    1. Polyester

    2. Polyamide

    3. Polyethene

    4. Polystyrene

  5. Regarding maintenance, synthetic fibers are preferred because they are:

    1. Light weight and quick drying

    2. Heavy and slow drying

    3. Sensitive to insects

    4. Prone to shrinking

  6. Which synthetic fiber is specifically noted for providing warmth and being soft?

    1. Polyethylene

    2. Nylon

    3. Acrylic

    4. Polystyrene

  7. Which property of plastic allows them to be formed into almost any desired shape?

    1. Transparency

    2. High density

    3. Mould easily

    4. Heat conductivity

  8. Polymers can be 3D printed using:

    1. Chemical solutions only

    2. A variety of techniques

    3. High-pressure gases

    4. Natural cotton fibers

  9. Which acid is used for the formation of a polyamide?

    1. Terephthalic acid

    2. Butanedioic acid

    3. Hydrochloric acid

    4. Acetic acid

  10. By varying the type and proportion of ......, chemists can make such polymers which show specific properties

    1. Monomers

    2. Polyester

    3. Polymer

    4. None

  11. The linkage present in a PET polymer molecule is:

    1. Ester linkage

    2. Amide linkage

    3. Ether linkage

    4. Glycosidic linkage

  12. Which property makes polymers useful for a wide range of applications?

    1. Resistance to chemicals

    2. High strength

    3. Flexibility

    4. All

Q2. Short questions (Attempt any 8 of 12 · 8 × 2 = 16)

  1. How can chemists change the specific properties of a polymer?

  2. What is the role of catalyst in addition polymerization?

  3. Distinguish between natural and man-made polymers.

  4. Define monomers and polymers.

  5. Why is it dangerous to burn discarded articles made of plastics?

  6. Give two examples each of addition polymers and condensation polymers.

  7. Draw the structures of the following polymers. (a) Polypropylene (b) Polystyrene

  8. What is the global significance of polyester and nylon in clothing?

  9. List four properties of polymers that make them useful for wide applications.

  10. How is an ester linkage formed during the synthesis of PET?

  11. How can the properties of polymers be changed for highly specific applications?

  12. Why can plastics be easily transformed into almost any desired shape?

Q3. Long questions (Attempt any 3 of 4 · 3 × 4 = 12)

  1. Differentiate between addition and condensation polymerizations.

  2. Write formation of polyamide.

  3. Describe the role of synthetic polymers in the textile industry.

  4. Write a detailed note on addition polymers.