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ROHIT RANJAN

· started a discussion

· 1 Months ago

WTF (Question: 317735.0 )

COAL DUST IS USED TO INCRESE SURFACE FINISH

Question:

Which of material are added to increase strength of green sand.

Options:
A)

Iron oxide

B)

Aluminium oxide

C)

Coal dust

D)

(A) and (B) both

 

Solution:

Ans: (c)

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