Discussion

Select the correct option to match the Product with the most appropriate Processing technique from the table given below:

Product		Processing technique
P	Fibre-reinforced pressure vessel	I	Rotomoulding
Q	Overhead water tank	II	Thermoforming
R	Blister package for medicine	III	Filament winding
S	Plastic carry bag	IV	Blown film extrusion

Answer: D

The correct matching is P-III ; Q-I ; R-II ; S-IV.

Fibre-reinforced pressure vessel: filament winding wraps resin-impregnated fibres round a rotating mandrel in a pattern chosen to carry the hoop and axial stresses (III).
Overhead water tank: rotomoulding tumbles powder in a heated mould to make large, seamless hollow parts (I).
Blister package: thermoforming shapes a heated sheet into the pockets (II).
Plastic carry bag: blown film extrusion inflates an extruded tube into thin film (IV).

Option A swaps the tank and the blister pack, and the others assign the pressure vessel to processes that cannot place continuous fibres.

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