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Assertion (A): Dry pressing, plastic forming and slip casting occupy three distinct ranges of water content.
Reason (R): Each method needs a different balance between flowability and the ability to hold a shape.

  • A.A is false but R is true
  • B.Both A and R are true, and R is the correct explanation of A
  • C.Both A and R are true, but R is not the correct explanation of A
  • D.A is true but R is false

Answer: B

Correct answer: Both A and R are true, and R is the correct explanation of A

Both are true and the reason gives the mechanism. Water gives flowability and takes away the ability to hold a shape, and each method needs a different point on that trade - a slip must pour, a plastic body must hold its form as it leaves the die, and a pressed powder must flow into a die and stay where the punch puts it.

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