Question: Zinc is highly __________ at room temperature.
[A].ductile
resistant to atmospheric corrosion
malleable
brittle
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Maximum consumption of zinc is in
Question: Maximum consumption of zinc is in
[A].alloying
galvanising
utensil manufacture
electrical industry
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
As the impurities are oxidised, the melting point of iron
Question: As the impurities are oxidised, the melting point of iron
[A].decreases.
remains unchanged.
increases.
may increase or decrease ; unpredictable.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Cast iron is having very high
Question: Cast iron is having very high
[A].proximity between its elastic limit and ultimate breaking strength.
ductility.
tensile strength.
all (a), (b) and (c).
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Wrought iron is having very high
Question: Wrought iron is having very high
[A].hardness.
strength.
corrosion resistance.
susceptibility to changes in its properties by heat treatment.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
German silver used for decorative purposes contains maximum percentage of
Question: German silver used for decorative purposes contains maximum percentage of
[A].silver
copper
zinc
nickel
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Chemisorption (chemical adsorption) is
Question: Chemisorption (chemical adsorption) is
[A].same as “Van der Waals” adsorption.
characterised by adsorption of heat.
an irreversible phenomenon.
a reversible phenomenon.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Locomotive boiler tubes are made of __________ alloys.
Question: Locomotive boiler tubes are made of __________ alloys.
[A].arsenic copper
magnesium
aluminium
nickel
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Copper has very low
Question: Copper has very low
[A].malleability
ductility
tensile strength
thermal & electrical conductivity
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
‘Age hardening’ of duralumin is due to
Question: ‘Age hardening’ of duralumin is due to
[A].copper
magnesium
both (a) & (b)
neither (a) nor (b)
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.