Polystyrene is generally available in the form of
A) trapezoidal moulds
B) square sections
C) plates
D) cylindrical bars
Correct Answer:
Verified
Q1: High silicon irons are
A)resistant to wear
B)brown in
Q2: Carbondioxide moulding is useful for
A)very thin sections
B)regular
Q3: A drawback is employed when
A)the pattern is
Q4: In furan moulding which of the following
Q5: In case of copper, the pouring temperature
Q7: If an old casting is to be
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
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