Mechanical Engineering Exam > Mechanical Engineering Questions > Pick up the wrong statement:a)Plastics are fo...
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Pick up the wrong statement:
- a)Plastics are formed by the process of both polymerization and condensation.
- b)Plastics are bad conductors of heat as well as electricity.
- c)Thermosetting plastic materials become hard with the application of heat and presure.
- d)Plastics, in general, are unaffected by heat or solvents.
Correct answer is option 'D'. Can you explain this answer?
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Pick up the wrong statement:a)Plastics are formed by the process of bo...
Plastics and Their Properties:
Plastics are a versatile group of materials that are widely used in various applications due to their unique properties. However, it is essential to understand the properties of plastics to make informed decisions about their use.
Incorrect Statement:
Plastics, in general, are unaffected by heat or solvents.
Explanation:
- Plastics are not completely unaffected by heat or solvents. While some plastics may have high heat resistance, others may melt or deform at relatively low temperatures.
- Solvents can also affect the properties of plastics. Some plastics may dissolve or swell when in contact with certain solvents.
- It is crucial to consider the specific type of plastic and its intended use when determining its resistance to heat and solvents.
Correct Statements:
- Plastics are formed by the process of both polymerization and condensation. This is true as plastics can be produced through different processes, including polymerization and condensation reactions.
- Plastics are bad conductors of heat as well as electricity. This statement is accurate as most plastics have low thermal and electrical conductivity compared to metals.
- Thermosetting plastic materials become hard with the application of heat and pressure. This is correct as thermosetting plastics undergo a chemical reaction when heated and become rigid and non-meltable.
In conclusion, understanding the properties of plastics is essential for selecting the right material for a specific application. While some plastics may exhibit high heat resistance or solvent resistance, it is not accurate to claim that plastics, in general, are unaffected by heat or solvents.
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Pick up the wrong statement:a)Plastics are formed by the process of both polymerization and condensation.b)Plastics are bad conductors of heat as well as electricity.c)Thermosetting plastic materials become hard with the application of heat and presure.d)Plastics, in general, are unaffected by heat or solvents.Correct answer is option 'D'. Can you explain this answer?
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Pick up the wrong statement:a)Plastics are formed by the process of both polymerization and condensation.b)Plastics are bad conductors of heat as well as electricity.c)Thermosetting plastic materials become hard with the application of heat and presure.d)Plastics, in general, are unaffected by heat or solvents.Correct answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Pick up the wrong statement:a)Plastics are formed by the process of both polymerization and condensation.b)Plastics are bad conductors of heat as well as electricity.c)Thermosetting plastic materials become hard with the application of heat and presure.d)Plastics, in general, are unaffected by heat or solvents.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Pick up the wrong statement:a)Plastics are formed by the process of both polymerization and condensation.b)Plastics are bad conductors of heat as well as electricity.c)Thermosetting plastic materials become hard with the application of heat and presure.d)Plastics, in general, are unaffected by heat or solvents.Correct answer is option 'D'. Can you explain this answer?.
Pick up the wrong statement:a)Plastics are formed by the process of both polymerization and condensation.b)Plastics are bad conductors of heat as well as electricity.c)Thermosetting plastic materials become hard with the application of heat and presure.d)Plastics, in general, are unaffected by heat or solvents.Correct answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Pick up the wrong statement:a)Plastics are formed by the process of both polymerization and condensation.b)Plastics are bad conductors of heat as well as electricity.c)Thermosetting plastic materials become hard with the application of heat and presure.d)Plastics, in general, are unaffected by heat or solvents.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Pick up the wrong statement:a)Plastics are formed by the process of both polymerization and condensation.b)Plastics are bad conductors of heat as well as electricity.c)Thermosetting plastic materials become hard with the application of heat and presure.d)Plastics, in general, are unaffected by heat or solvents.Correct answer is option 'D'. Can you explain this answer?.
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