The monomer used in the preparation of Teflon is ____________.
Teflon, a well-known polymer, is produced through the polymerization process of tetrafluoroethene \( (C_2F_4) \).
This reaction can be described by: \[ n \, F_2C=CF_2 \quad \xrightarrow{\text{polymerization}} \quad [ -CF_2-CF_2]_n \]
Therefore, the correct answer is (d) tetrafluoroethene.
Derive an expression for maximum speed of a vehicle moving along a horizontal circular track.
Predict the type of cubic lattice of a solid element having edge length of 400 pm and density of 6.25 g/ml.
(Atomic mass of element = 60)