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.Management Sciences
Category: Chemical Engineering Basics
Surface tension of a liquid_________________?
A. Is due to intermolecular forces of cohesion
B. Decreases with rise in temperature
C. Is responsible for the spherical shape of an isolated liquid drop
D. All A, B. & C
Work done by a/an _________________ process is determined by ∫p. dv ?
A. Adiabatic
B. Quasi-static
C. Isothermal
D. Isentropic
________________ property of steel increases by addition of large amount of silicon in it?
A. Mechanical
B. Machining
C. Magnetic
D. Refractory
The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the____________________?
A. Critical point
B. Curie temperature
C. Inversion temperature
D. Eutectic temperature
Air standard Otto cycle is more efficient than the diesel cycle for the same__________________?
A. Heat addition & compression ratio
B. Heat addition & pressure
C. Compression ratio & pressure
D. Cylinder dimension & rpm
Pick out the correct combination about the role of various additives used in polymers ?
A. Plasticiser: increases the polymer strength
B. Heat stabiliser: increases the maximum service temperature
C. Fillers: Does not affect the property of polymer but increases its weight
D. Lubricants: increases the flexibility of polymers
Which of the following metals cannot be hot worked at room temperature ?
A. Zinc
B. Nickel
C. Lead
D. Tin
The usual energy consumption in electric arc furnace steel making is _____________ KWh/ton of steel ?
A. 60 – 100
B. 400 – 700
C. 1200 -1500
D. 2000 – 2300
Cascade control is___________________?
A. The continuous adjustment of the set point index of an automatic control loop by a primary(master) controller
B. Used when changes in process conditions cause serious upsets in the controlled variable
C. Useful to control flow from temperature
D. All A, B & C
Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution ?
A. A1 is more alkaline than solution A2
B. A1 is highly acidic
C. A2 is very slightly acidic
D. Both B. & C.
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