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Mr. Dubey • 53.48K Points
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Q. Which of the following increases the dry strength of the sand?

(A) iron oxides
(B) fuel oils
(C) cereals
(D) dextrin and molasses
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Explanation by: Mr. Dubey 
 dextrin and molasses are used for increasing the dry strength of the sand, which add hardness to the mould.

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