Question
Which of the following is made to heat tetrafluoroethene
on high pressure with free radical or percussive catalyst?Solution
Polytetrafluoroethylene (PTFE), commonly known as Teflon , is made by heating tetrafluoroethylene under high pressure with a free radical initiator or a peroxide catalyst. This process involves polymerization, where the monomers (tetrafluoroethylene) are converted into a polymer (PTFE) using these catalysts to initiate and propagate the reaction.
If {x + (1/x)} = 4, then find the value of {x2 + (1/x2)}
x + y = 4, xy = 2, y + z = 5, yz = 3, z + x = 6 and xz =4, then find the value of x 3 + y 3 + z 3 – 3xyz.
...What will come in place of the question mark (?) in the following series?
23, 46, ?, 184, 368, 736
- If (x + y + z) = 14 and (xy + yz + zx) = 50, then find the value of (x² + y² + z²).
If (a – 8) 2 + (b + 2) 2 + (c – 3) 2 = 0, then find the value √(a +b + c).
...If (x - y) = 3, then find the value of (x³ - y³ - 9xy).
If x + y + xy = 118, such that x < y and both 'x' and 'y' are positive integers, then find minimum value of (x + y) .
If x + 1/x = 5 then find out the value of x⁵ + 1/(x⁵)?
If x = 8.15, y = 9.06 and z = –17.21, then the value of x³ + y³ + z³ – 3xyz is:
189500 – 22650 + 48× ? – 352×18 = 162674
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