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MCQs 1: Body centered cubic structure has an atomic packing factor equal to

0.74 0.68 0.52 None of the above
Answer Explanation

MCQs 2: In which type of point defect, positive and negative ions are missing from the crystal?

Vacancy defect Interstitial defect Schottky defect Substitutional defect
Answer Explanation

MCQs 3: What is meant work hardening process?

Ductile materials are deformed plastically at temperatures below crystalline temperatures which increases strength and hardness of the material Ductile materials are deformed plastically at temperatures above crystalline temperatures which increases strength and hardness of the material Ductile materials are deformed plastically at crystalline temperatures which increases strength and hardness of the material None of the above
Answer Explanation

MCQs 4: What are thermoplastics?

They are nonlinear polymers, in which rise in temperature increases plasticity They are linear polymers, in which rise in temperature increases plasticity They are linear polymers, in which temperature rise has no effect on plasticity None of the above
Answer Explanation

MCQs 5: What happens when thermosetting polymers are heated?

They become soft They are deformed They become rigid All of the above
Answer Explanation

MCQs 6: Which among the following is the characteristics of polymers?

High tensile strength High coefficient of friction Low density All of these
Answer Explanation

MCQs 7: How is Ester produced?

Addition polymerization Condensation polymerization Substitutional polymerization None of these
Answer Explanation

MCQs 8: Which among the following is a type of destructive test?

Magnetic particle test Cupping test Dye penetrant All of the above
Answer Explanation

MCQs 9: What is meant by resilience in stress strain curve?

area in the plastic region area in the elastic region area in elastic and plastic region none of the above
Answer Explanation

MCQs 10: Non-destructive testing is used to determine

location of defects chemical composition corrosion of metal All of these
Answer Explanation

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