Top-10 Plastics Interview Question and Answer-2019!!
Top 10 Plastics Interview Question and Answer-2019!!
This video very important for fresher mechanical students. In this video we discussed about Top 10 Plastics Interview Question and Answer 2019.
#top10, #plasticquestion, #plasticsinterview,
This question is very helpful for fresher engineer who are willing to build career in industry.
Here we detail the video lecture:
QUESTION NO 1: What are the important characteristics of plastics?
Answer: It can be molded into finished product by application of heat and pressure.
QUESTION NO 2: What are the advantages of plastics over metals?
Answer:
• Low weight
• Corrosion resistance
• Insulation properties
• Electrical properties
• Cheaper
• Easy to handle
• Surface properties
• Reusable
QUESTION NO 3: Explain the disadvantages of plastics?
Answer:
• Low strength
• Low heat resistance
• Poor mechanical properties
• Difficulty to repair
QUESTION NO 4: How to classify the plastics?
Answer:
• Natural : milk of rubber tree, cellulose
• Semi synthetic
• Synthetic
QUESTION NO 5: Types of plastics based on chemical behavior?
Answer:
• Thermo plastics
• Thermosetting plastics
QUESTION NO 6: Difference between thermo set and thermo plastics?
Answer:
Thermoplastics:
• Can be re softened and reused
• No chemical changes during heating.
• In granular form
• Needle structure
• Hard but not brittle
Thermo set plastics:
• Cannot be re softened and reused
• Chemical changes during heating etc.
• In powder form
• Cross linked structure
• Hard and brittle
QUESTION NO 7: What is HDPE?
Answer: Main features of HDFE are high density, rigidity, strength, hardness and chemical resistance. Examples are milk bottle crates, fish boxes etc.
QUESTION NO 8: What is LDPE?
Answer: It is crystalline and not available in transparent form. Examples are shopping baskets, waste baskets etc.
QUESTION NO 9; what is PVC?
Answer: It is rigid and not very tough and very low cost. Example - Pipes fittings.
QUESTION NO 10: Examples for thermosetting materials?
Answer: Alkyds, epoxies, mf, urea, polyester
Thanks for Watching. Hit Like & Subscribe Button Don't Forget to Subscribe:
This video very important for fresher mechanical students. In this video we discussed about Top 10 Plastics Interview Question and Answer 2019.
#top10, #plasticquestion, #plasticsinterview,
This question is very helpful for fresher engineer who are willing to build career in industry.
Here we detail the video lecture:
QUESTION NO 1: What are the important characteristics of plastics?
Answer: It can be molded into finished product by application of heat and pressure.
QUESTION NO 2: What are the advantages of plastics over metals?
Answer:
• Low weight
• Corrosion resistance
• Insulation properties
• Electrical properties
• Cheaper
• Easy to handle
• Surface properties
• Reusable
QUESTION NO 3: Explain the disadvantages of plastics?
Answer:
• Low strength
• Low heat resistance
• Poor mechanical properties
• Difficulty to repair
QUESTION NO 4: How to classify the plastics?
Answer:
• Natural : milk of rubber tree, cellulose
• Semi synthetic
• Synthetic
QUESTION NO 5: Types of plastics based on chemical behavior?
Answer:
• Thermo plastics
• Thermosetting plastics
QUESTION NO 6: Difference between thermo set and thermo plastics?
Answer:
Thermoplastics:
• Can be re softened and reused
• No chemical changes during heating.
• In granular form
• Needle structure
• Hard but not brittle
Thermo set plastics:
• Cannot be re softened and reused
• Chemical changes during heating etc.
• In powder form
• Cross linked structure
• Hard and brittle
QUESTION NO 7: What is HDPE?
Answer: Main features of HDFE are high density, rigidity, strength, hardness and chemical resistance. Examples are milk bottle crates, fish boxes etc.
QUESTION NO 8: What is LDPE?
Answer: It is crystalline and not available in transparent form. Examples are shopping baskets, waste baskets etc.
QUESTION NO 9; what is PVC?
Answer: It is rigid and not very tough and very low cost. Example - Pipes fittings.
QUESTION NO 10: Examples for thermosetting materials?
Answer: Alkyds, epoxies, mf, urea, polyester
Thanks for Watching. Hit Like & Subscribe Button Don't Forget to Subscribe:
No comments