Slag in a blast furnace is
A) lighter than molten iron
B) heavier than molten iron
Correct Answer:
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Q8: The strength of the sand is high
Q9: A mould which has good erosion resistance
Q10: During the passage of molten metal through
Q11: Hot spots are generally found in castings
A)symmetrical
Q12: Which of the following metals has the
Q14: Sprues are generally
A)tapered upwards
B)tapered downwards
C)uniform size
Q15: When bench moulding is adopted using three
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Q17: Thermal efficiency of cupola is in the
Q18: Which of the following sand must possess
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