For the production of very high vacuum, a __________ pump is normally used.

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Ram Sharma

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📊 Fluid Mechanics

Q. For the production of very high vacuum, a __________ pump is normally used.

(A) Diffusion
(B) Jet ejector
(C) Piston
(D) Centrifugal

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✅ Correct Answer: (A) Diffusion

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