The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is ______________ BTU/hr?
A. 100
B. 200
C. 1000
D. 2000
Chemical Engineering Basics
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 shape
_______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?
_______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?
A. Beryllium
B. Zirconia
C. Alumina
D. Magnesia
Cobalt – 60 is used as a source of _____________ in medical therapy & industrial radiography?
Cobalt – 60 is used as a source of _____________ in medical therapy & industrial radiography?
A. X-rays
B. γ-rays
C. α-rays
D. β-rays
__________________ is used for tying the steel columns to concrete foundation?
__________________ is used for tying the steel columns to concrete foundation?
A. Grouting
B. Eyebolt
C. Anchor bolts
D. Refractory castables
Alloys having more than 80% copper are generally more______________________?
Alloys having more than 80% copper are generally more______________________?
A. Abrasion resistant
B. Corrosion resistant
C. Prone to season cracking
D. Machinable
Friction factor for fluid flow in pipe does not depend upon the________________?
Friction factor for fluid flow in pipe does not depend upon the________________?
A. Pipe length
B. Pipe roughness
C. Fluid density & viscosity
D. Mass flow rate of fluid
Which of the following is preferred for riveting ?
Which of the following is preferred for riveting ?
A. Lap joint
B. Butt joint
C. Either A. or B.
D. Neither A. nor B.
In case of simple harmonic motion, displacement is proportional to the_________________?
In case of simple harmonic motion, displacement is proportional to the_________________?
A. Velocity
B. Acceleration
C. Both A. & B.
D. Neither A. nor B.
A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is_________________?
A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is_________________?
A. Lead
B. Glass
C. Mica
D. Silver