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Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called
Poly tetra flouro ethylene (PTFE) is known as
Consider the following statements for Poly-Si deposition: 1. Poly-Si layer is used for gate electrode of MOSFET because it has similar lattice constants with SiO2. 2. Poly-Si layer used for gate electrode of MOSFET for the better mechanical stability due to different thermal expansion coefficients. 3. In VLSI circuits, interconnects can be completed in one or two metal levels. 4. Poly-Si is used for short interconnects. Which of the above statements are correct ?
Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation?
Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation?
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
TEFLON is obtained by the chain polymerisation of tetra fluoro ethylene in presence of __________ as initiator.
Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800?
Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6°C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)
Which catalyst is used in the reaction of acetylene and chlorine producing tetra chloro ethane?