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The Natural Sand needs only water to mix before making moulds.

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+1 vote
in Foundry and Forging by (110k points)
The Natural Sand needs only water to mix before making moulds.

(a) True

(b) False

I had been asked this question during an internship interview.

My doubt stems from Requirements of the Base Sand in chapter Sand Moulding of Foundry and Forging

1 Answer

+1 vote
by (736k points)
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Best answer
The correct choice is (a) True

The best explanation: The Natural sand is obtained from sources like deserts, lakes, riverside beds etc. It has a certain quantity of natural binders such as clay. The water (of about 5% to 8%) is mixed before making of the mould is necessary to make it easy for molding.

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