Q1. Explain the different reasons for testing a plastic. Explain why are multiple specimen employed in a particular test for plastics?
Q2. Illustrate any one falling weight impact test.
Q3. Define the Vicat softening temperature. Explain how it differs from the heat deflection temperature?
Q4. Describe the principle of differential scanning calorimetry.
Q5. Describe the environmental stress-cracking resistance. Explain how it is distinct from other kinds of stress cracking?
Q6. Describe the importance of:
a) Heat distortion temperature
b) Limiting oxygen index