‘Hypersil’ is a __________ steel.
Question: ‘Hypersil’ is a __________ steel.
[A].
high speed
silicon
molybdenum
tungsten
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
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CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.
Question: CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.
[A].102 [B].
105 [C].
109 [D].
1015 Answer: Option B
Explanation:
No answer description available for this question.
An ingot is hot forged to a 60% reduction in cross-section area. The percentage reduction in the volume for the above process is
Question: An ingot is hot forged to a 60% reduction in cross-section area. The percentage reduction in the volume for the above process is
[A].0 [B].
60 [C].
30 [D].
20 Answer: Option A
Explanation:
No answer description available for this question.
FeO (s) + CO (g) = Fe (s) + CO2 (g), k = 0. 435 at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K ?
FeO (s) + CO (g) = Fe (s) + CO2 (g), k = 0. 435 at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K ?A. 1.0
B. 1.3
C. 2.3
D. 3.3Clock pendulums are usually made of _______________ steel?
Clock pendulums are usually made of _______________ steel?A. High speed
B. Stainless
C. Heat resisting
D. None of these“Overfire burning” in a furnace is a phenomenon characterised by the
Question: “Overfire burning” in a furnace is a phenomenon characterised by the
[A].supply of excess fuel. [B].
supply of excess air. [C].
burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air. [D].
none of these. Answer: Option C
Explanation:
No answer description available for this question.
A catalyst in a chemical reaction
Question: A catalyst in a chemical reaction
[A].decreases the activation energy. [B].
alters the reaction mechanism. [C].
increases the frequency of collisions of reacting species. [D].
all (a), (b) and (c). Answer: Option D
Explanation:
No answer description available for this question.