(A) In the preparation of plexi glass acetone is used.
(R) Poly methyl metha crylate [PMMA] is plexi glass.

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Both (A) and (R) are true but (R) is not the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

(A) is true but (R) is false

answer is B.

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Detailed Solution

PMMA is an important thermoplastic resin. It is also known as Lucite or plexiglass.
Acetone is used in the preparation of plexiglass to help dissolve and mix the acrylic polymer with other ingredients, such as colorants and UV stabilizers.
This process helps to ensure that the resulting material is consistent and free of impurities.
So, both (A) and (R) are true but (R) is not the correct explanation of (A).

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