Related Questions

The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
A Cracking
B Fractional distillation
C Full distillation
D Carbonisation
A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.
A Sump
B Volute
C Vacuum
D Submerged
In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface.
A Nucleate
B Local
C Pool
D Saturated
Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of
A Thermal cracking
B Gum formation
C Coking
D Discoloration
Boiling point elevation for a strong and concentrated solution is found by Duhring's rule, which states that at the same pressure, the boiling point of a solution is a linear function of the __________ of pure water.
A Boiling point
B Dynamic viscosity
C Kinematic viscosity
D Density
Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the
A Forestation
B Rain
C Green house effect
D Vegetation
One kg of carbon produces __________ kg of carbon dioxide.
A $$\frac{3}{7}$$
B $$\frac{7}{3}$$
C $$\frac{{11}}{3}$$
D $$\frac{3}{{11}}$$
The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is
A Less
B More
C Equal
D May be less or more depending on temperature
Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure.
A Plus
B Minus
C Divide
D Multiply
Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes
A Fading of dyes on textiles
B Corrosion, tarnishing & soiling of metals
C Reduced strength of textiles
D All of the above

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