Question: Nickel and copper are the basic constituents of
[A].hastelloy
monel metal
German silver
inconel
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
CHEMICAL ENGINEERING
A chemical change takes place when iron
Question: A chemical change takes place when iron
[A].rusts
melts
is heated
none of these
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of
Question: Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of
[A].tungsten
vanadium
silicon
all (a), (b) & (c)
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Cementite is
Question: Cementite is
[A].Fe3C chemically.
a compound of carbon and iron.
characterised by an orthorhombic crystal structure.
all (a), (b) and (c).
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Alpha iron is stable __________ °C.
Question: Alpha iron is stable __________ °C.
[A].above 1403
upto 910
above 1800
between 910 & 1403
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Galvanised iron is
Question: Galvanised iron is
[A].harder
protected from rusting
alumina coated iron
none of these
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
White cast iron as compared to grey cast iron is
Question: White cast iron as compared to grey cast iron is
[A].more durable
very brittle
very hard
all (a), (b) & (c)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Atmospheric corrosion of metals result from their
Question: Atmospheric corrosion of metals result from their
[A].slow oxidation
fast oxidation
fast hydration
slow dehydration
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
__________ iron is produced, when molten pig iron is allowed to cool gradually.
Question: __________ iron is produced, when molten pig iron is allowed to cool gradually.
[A].White cast
Grey cast
Wrought
none of these
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
__________ iron is produced, when molten pig iron is chilled suddenly.
Question: __________ iron is produced, when molten pig iron is chilled suddenly.
[A].White cast
Grey cast
Wrought
none of these
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.