Related Questions

The minimum temperatures from Monday through Sunday in the first week of December in a region are observed to be 20c,40c,40c,50c,70c90c,100c. What is the range of the temperatures?
A -100c
B -80c
C 80c
D 100c
The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an __________ law.
A Exponential
B Parabolic
C Linear
D Cubic
Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is
A Positive
B Negative
C Zero
D Infinity
Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.
A Less than
B Same as
C More than
D Half
When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in
A Raman spectra
B Absorption spectra
C Emission spectra
D Fluorescence
Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures.
A 350
B 750
C 1050
D 1250
At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.
A Varies linearly
B Increases
C Decreases
D Does not vary
The winter temperatures of north-western Europe are higher than those of eastern Europe in the same latitudinal zone because ________
A It is on the western side of the continent
B It 'is near the sea
C It receives only light falls of snow
D It lies under westerly winds which blow over the Gulf Stream Drift
A square corner reflector is used in which of the following?
A TV broadcast
B Point-to-point communication
C Radio astronomy
D All of the above
A square corner reflector is used in
A Radio astronomy
B Tv broadcast
C Point to point communication
D All of the above

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