Related Questions

Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?
A Cost
B Availability
C Toxicity
D Selectivity
For separating small pieces of metal from engine oil of a car, the best separating technique is the
A Chromatography
B Evaporation
C Filtration
D Fractional distillation
The rainfall due to upward movement of air caused by convergence of cold air masses against warm air masses is called ________.
A Cyclonic rainfall
B Orographic rainfall
C Frontal rainfall
D Convectional rainfall
Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about
A 1 to 2°
B 2 to 5°
C 5 to 10°
D 10 to 15°
When warm and cold liquids are mixed, the heat transfer is mainly by
A Conduction
B Convection
C Radiation
D Both A & C
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
A Equal to
B Equal and opposite to
C Less than
D Greater than
The phenomenon of collision of two elastic bodies takes place because bodies
A Immediately after collision come momentarily to rest
B Tend to compress each other till they are compressed maximum possible
C Attempt to regain its original shape due to their elasticities
D All the above
Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation
A Is directly proportional to their velocity of approach
B Is inversely proportional to their velocity of approach
C Bears a constant ratio to their velocity of approach
D Is equal to the sum of their velocities of approach
The McMahon Line, which sets the boundary between India and China, is drawn to the northern boundary of which of the following states?
A Jammu and Kashmir
B Uttar Pradesh
C Himachal Pradesh
D Arunachal Pradesh
The ratio of the thickness of thermal boundary layer to the thickness of hydrodynamic boundary layer is equal to (Prandtl number) n, where n is equal to
A $$ - \frac{1}{3}$$
B $$ - \frac{2}{3}$$
C 1
D $$-1$$

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