Makes it potable
Makes it non-potable
Means distillation of water
None of these
A. Makes it potable
Equal to
Greater than
Less than
Either (A), (B) or (C); depends on the size of atom
Descaling
Shot blasting
Pickling
Skimming
0.2
0.4
0.6
0.8
Steel plant
Textile factory
Petroleum refinery
Coke oven battery
Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties
Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyaniding, carburising, nitriding etc., which produces high carbon outer layers resulting in increase of surface hardness
Induction hardening and flame hardening techniques are also used for surface hardening
Martempering of a material is a hardening process
Graphite
Lead sulphide
Lead
Both (B) & (C)
Liquid iron
Solid iron
Sponge iron
Iron saturated with carbon
Forward curved
Backward curved
Double curved
Radial or straight
Gantt chart
Bin chart
String diagram
Travel chart
More
Less
Same
More but less than the diameter of bolt
0
0.33
0.44
0.25
Freeze drying
Solar evaporation
Electrolytic
None of these
Drain out water and sludge from the boiler during repair
Put off fire in the furnace when water level in the boiler falls to unsafe limit
Guard the boiler in case of abnormal rise in steam pressure
All (A), (B) & (C)
Plasticiser: increases the polymer strength
Heat stabiliser: increases the maximum service temperature
Fillers: Does not affect the property of polymer but increases its weight
Lubricants: increases the flexibility of polymers
Magnetic susceptibility
Magnetic moment
Permeability of free space
Flux density
S < 0.05% and P < 0.05%
S < 0.05% and P < 1.5%
S < 0.05% and P > 1.5%
S > 1.5% and P < 0.05%
Creep
Tension
Compression
Endurance
Sulphur
Silicon
Lead
Phosphorous
1 kg/cm2
1 bar
1 atmosphere
1 kilo Pascal
Septic tank
Oxidation well
Digestor
Lagoon
Nitriding
Hot dipping
Electroplating
Both b & c
E = 2G (1 + v)
E = G (1 + v)
E = G (1 + v)/2
E = 2G (1 + 2v)
Base and strong acid
Base and weak acid
Acid and weak base
None of these
Elaiden test
Reichert-Meissl value test
Hunter value test
Iodine value test
Malleable
Ductile
Brittle
Tough
Molybdenum
Chromium
Vanadium
Silicon
High pressure & load
Low pressure & load
High temperature
Large surface wear
Brine (sea water)
Diamond
Distilled water
Glass
Soldering
Welding
Brazing
Riveting
1.2 to 2.5
4.5 to 6.2
7.5 to 8.5
10.5 to 15.5