science
Grade-5
Easy
Question
Like synthetic fibers, plastic is also a ……
- Polyester
- Polymer
- Monomer
- Elastomers
Hint:
Plastic is also made-up of many units of molecules.
The correct answer is: Polymer
- Plastic is a polymer which means it is made up of many units known as monomer linked together.
- Plastics are man made using addition polymerisation reactions.
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Identify the product based on the given features.
I. It is a synthetic product.
II. It has a linear-linked arrangement of monomer units.
III. It is relatively resistant to sunlight and weather and used for making window frames.
I. It is a synthetic product.
II. It has a linear-linked arrangement of monomer units.
III. It is relatively resistant to sunlight and weather and used for making window frames.
Identify the product based on the given features.
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See the figure given below and select the correct statements regarding plastics.
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(i). Figure (a) shows the structure of a monomer, while figure (b) shows the structure of a polymer.
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Polyvinyl chloride is soft, ______, and lightweight plastic.
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All plastics have ______ type of arrangement of units.
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Identify the P, Q, and R from the following:
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II. Plastics do not react with air and acids.
III. Plastics are insoluble in water.
IV. Plastics are a poor conductor of heat
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III. Plastics are insoluble in water.
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Statement 2: Polyethylene is a natural fiber
Read the given statements and mark the appropriate answer.
Statement 1: Polyethylene is synthesized from polymers by linking a large number of ethene units.
Statement 2: Polyethylene is a natural fiber
Statement 1: Polyethylene is synthesized from polymers by linking a large number of ethene units.
Statement 2: Polyethylene is a natural fiber
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Heating and cooling of the thermoplastics ______ the chemical nature.
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The polyvinyl chloride plastics are generally _______ in water.
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