Question:
Which of the following polymers can be used for lubrication and as an insulator?
Which of the following polymers can be used for lubrication and as an insulator?
Show Hint
PTFE (Teflon) = low friction (lubrication) + high electrical resistance (insulator).
Updated On: Apr 16, 2026
- SBR
- PVC
- PTFE
- PAN
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
PTFE (Polytetrafluoroethylene), commonly known as Teflon, has unique properties that make it suitable for both lubrication and electrical insulation.
Step 1: Properties of PTFE.
• Very low coefficient of friction (one of the lowest of any solid) → excellent dry lubricant.
• High electrical resistivity → excellent electrical insulator.
• Chemically inert, high thermal stability, non-stick.
Step 2: Check other options.
• (A) SBR (Styrene-Butadiene Rubber) → used in tires, not a lubricant or good insulator.
• (B) PVC (Polyvinyl chloride) → good insulator but not used as a lubricant.
• (C) PTFE → satisfies both conditions.
• (D) PAN (Polyacrylonitrile) → used in fibers (Acrilan), not as lubricant.
Step 1: Properties of PTFE.
• Very low coefficient of friction (one of the lowest of any solid) → excellent dry lubricant.
• High electrical resistivity → excellent electrical insulator.
• Chemically inert, high thermal stability, non-stick.
Step 2: Check other options.
• (A) SBR (Styrene-Butadiene Rubber) → used in tires, not a lubricant or good insulator.
• (B) PVC (Polyvinyl chloride) → good insulator but not used as a lubricant.
• (C) PTFE → satisfies both conditions.
• (D) PAN (Polyacrylonitrile) → used in fibers (Acrilan), not as lubricant.
Was this answer helpful?
0
0
Top MET Chemistry Questions
- In the following sequence of reactions, \[ CH_3Br \xrightarrow{KCN} X \xrightarrow{H_3O^+} Y \xrightarrow{LiAlH_4 / \text{ether}} Z \] The final product \(Z\) is:
- MET - 2024
- Chemistry
- Organic Reactions
- The oxidation state of Cr in \([Cr(H_2O)_6]Cl_3\), \([Cr(C_6H_6)_2]\), \(K_2[Cr(CN)_2(O)_2(O_2)(NH_3)]\) respectively are:
- MET - 2024
- Chemistry
- coordination compounds
- Consider the following amino acids:
•[(i)] Lysine
•[(ii)] Glutamine
•[(iii)] Arginine
•[(iv)] Leucine
•[(v)] Serine
•[(vi)] Proline
•[(vii)] Valine Which of the given amino acids are basic in nature?- MET - 2024
- Chemistry
- Chemistry in Everyday Life
- The major product \(Y\) in the following reaction is:
- MET - 2024
- Chemistry
- carbonyl compounds
- For a first order reaction, time required for 99% completion is \(x\) times the time required for 90% completion. Find \(x\).
- MET - 2024
- Chemistry
- Half life
View More Questions
Top MET classification of polymers Questions
- Acrilan is a hard, horny and a high melting material. Its structure is :
- MET - 2021
- Chemistry
- classification of polymers
- Natural rubber is a polymer of isoprene. During polymerisation:
- MET - 2020
- Chemistry
- classification of polymers
Top MET Questions
- Let \( f:\mathbb{N} \to \mathbb{N} \) be defined as \[ f(n)= \begin{cases} \frac{n+1}{2}, & \text{if } n \text{ is odd} \\ \frac{n}{2}, & \text{if } n \text{ is even} \end{cases} \] Then \( f \) is:
- MET - 2024
- types of functions
- Given vectors \(\vec{a}, \vec{b}, \vec{c}\) are non-collinear and \((\vec{a}+\vec{b})\) is collinear with \((\vec{b}+\vec{c})\) which is collinear with \(\vec{a}\), and \(|\vec{a}|=|\vec{b}|=|\vec{c}|=\sqrt{2}\), find \(|\vec{a}+\vec{b}+\vec{c}|\).
- MET - 2024
- Addition of Vectors
- Given \(\frac{dy}{dx} + 2y\tan x = \sin x\), \(y=0\) at \(x=\frac{\pi}{3}\). If maximum value of \(y\) is \(1/k\), find \(k\).
- MET - 2024
- Differential equations
- Let \( f(x) \) be a polynomial such that \( f(x) + f(1/x) = f(x)f(1/x) \), \( x > 0 \). If \( \int f(x)\,dx = g(x) + c \) and \( g(1) = \frac{4}{3} \), \( f(3) = 10 \), then \( g(3) \) is:
- MET - 2024
- Definite Integral
- A real differentiable function \(f\) satisfies \(f(x)+f(y)+2xy=f(x+y)\). Given \(f''(0)=0\), then \[ \int_0^{\pi/2} f(\sin x)\,dx = \]
- MET - 2024
- Definite Integral
View More Questions