In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for ________ fibres?

For given number of passes, pitch & tube diameter, the maximum number of tubes that can be accommodated in a shell of tripled inside diameter will be ________ times?

Manometers measure the ________ pressure?

Gypsum is chemically ________?

Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA)?

Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will________?