Which of the following gases cause global warming ?
Which of the following gases cause global warming ?
A. Carbon monoxide
B. Carbon dioxide
C. Nitrogen
D. Ozone
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Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity) ____________________?
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity) ____________________?A. 1/k
B. k
C. k2
D. 1/k2Frost formation on the evaporator tubes in the domestic refrigerators
Question: Frost formation on the evaporator tubes in the domestic refrigerators
[A].can be prevented by proper design. [B].
decreased compressor power. [C].
causes heat loss due to poor heat transfer. [D].
is immaterial. Answer: Option C
Explanation:
No answer description available for this question.
For preparation of porous bearings by powder metallurgy, preferred particle shape is___________________?
For preparation of porous bearings by powder metallurgy, preferred particle shape is___________________?A. Spherical
B. Nodular
C. Irregular
D. No preferred shapeAmmonia gas can be dried by
Question: Ammonia gas can be dried by
[A].PCl5 [B].
quick lime [C].
CaCl2 [D].
concentrated H2SO4 Answer: Option B
Explanation:
No answer description available for this question.
Aromatics are desired constituents of
Question: Aromatics are desired constituents of
[A].lubricating oil [B].
diesel [C].
kerosene [D].
petrol Answer: Option D
Explanation:
No answer description available for this question.
Limestone is added in the blast furnace (during pig iron manufacture) to______________________?
Limestone is added in the blast furnace (during pig iron manufacture) to______________________?A. Form slag by combining with impurities
B. Supply heat by undergoing exothermic reaction with impurities
C. Reduce the coke consumption
D. Reduce slag viscosity