Polymer
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Q. Pre-weighed pieces of nylon, cotton, silk, and wool of equal measurements are taken and soaked in a beaker filled with water. After a few minutes, all cloth pieces were taken out of the beaker simultaneously and weighed again. Which of the following options places them in the correct order of their final weights?
- Silk > Wool > Cotton > Nylon
- Cotton > Silk > Nylon > Wool
- Wool > Silk > Nylon > Cotton
- Wool > Cotton > Silk > Nylon
Q.
The process by which large molecules of artificial fibres are made from small simple molecules is called
Q.
The word "polymer" means -
Chain of Steel
Many + units
Single + Unit
Chain of units
Q. Terylene is a popular form of
- nylon
- plastic
- rayon
- polyester
Q.
Match the type of fibre in column-I with their uses and characterstics in column-II
Column - IColumn - IIA. AcrylicP. Contains repeating ester unitsB. CelluloseQ. Used for making sweatersC. PolytheneR. Made up of large number of glucose unitsD. TeryleneS. Used for manufacturing toys.
A→Q, B→P, C→S, D→R
A→Q, B→R, C→S, D→P
A→S, B→Q, C→R, D→P
A→S, B→R, C→Q, D→P
Q. A is a long-chain molecule that is composed of a large number of repeating units.
- molecule
- fibre
- polymer
Q. A is a long-chain molecule that is composed of a large number of repeating units.
- molecule
- fibre
- polymer
Q. Which amongst the following is used to make the pipes used to supply water?
- Bakelite
- Polystyrene
- Polyvinyl chloride
- Melamine
Q. Match the monomers with their polymers.
- Bakelite
- Teflon
- PET
- Phenol
- Tetrafluoroethene
- Terephthalic acid
Q. A is a long-chain molecule that is composed of a large number of repeating units.
- molecule
- fibre
- polymer