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Three dimensional molecules with cross-l...

Three dimensional molecules with cross-links are formed in case of

A

thermoplastic

B

thermosetting plastic

C

both

D

none

Text Solution

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The correct Answer is:
To solve the question "Three dimensional molecules with cross-links are formed in case of," we need to analyze the types of polymers and their structures. Here’s a step-by-step breakdown of the solution: ### Step 1: Understand the Types of Polymers There are two main types of polymers: thermoplastics and thermosetting polymers. ### Step 2: Characteristics of Thermoplastics - Thermoplastics are linear or slightly branched chain polymers. - They do not have cross-links between the polymer chains. - Examples include nylon 6, Teflon, PVC, and polystyrene. ### Step 3: Characteristics of Thermosetting Polymers - Thermosetting polymers are semi-fluid substances with low molecular masses. - Upon heating, they undergo a permanent change in chemical composition. - They form a hard, infusible, and insoluble mass due to extensive cross-linking between polymer chains. ### Step 4: Identify the Structure - In thermosetting polymers, the presence of cross-links creates a three-dimensional network structure. - This extensive cross-linking is what differentiates them from thermoplastics. ### Step 5: Conclusion Based on the analysis, the answer to the question is that three-dimensional molecules with cross-links are formed in the case of **thermosetting polymers**. ### Final Answer **Thermosetting polymers** ---
To solve the question "Three dimensional molecules with cross-links are formed in case of," we need to analyze the types of polymers and their structures. Here’s a step-by-step breakdown of the solution: ### Step 1: Understand the Types of Polymers There are two main types of polymers: thermoplastics and thermosetting polymers. ### Step 2: Characteristics of Thermoplastics - Thermoplastics are linear or slightly branched chain polymers. - They do not have cross-links between the polymer chains. ...
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