The rolling process can not be used to produce
The rolling process can not be used to produce
The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?
The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?
What happens, when SO₂ is passed through a solution of H₂S in water?
What happens, when SO₂ is passed through a solution of H₂S in water?
Which of the following materials does not form adherent oxide film on surface?
Which of the following materials does not form adherent oxide film on surface?
The hardness of the lathe bed material is measured by the
The hardness of the lathe bed material is measured by the
Gross & Net calorific values will be the same for
Gross & Net calorific values will be the same for
Which of the following relatively employs the highest heat transfer surface area in a high pressure boiler ?
Which of the following relatively employs the highest heat transfer surface area in a high pressure boiler ?
Heat required to raise the temperature of a body by 1 °C is called its
Heat required to raise the temperature of a body by 1 °C is called its
Hot & cold working of material causes its __________ deformation.
Hot & cold working of material causes its __________ deformation.
Styrofoam is the commercial name of
Styrofoam is the commercial name of
When a copper ball is heated, the largest percentage increase will be in its
When a copper ball is heated, the largest percentage increase will be in its
Two stroke engine compared to a four stroke engine has
Two stroke engine compared to a four stroke engine has
Ammonia leakage in the refrigeration system is detected by
Ammonia leakage in the refrigeration system is detected by
Which of the following is an inedible oil ?
Which of the following is an inedible oil ?
The pH value is the measure of hydrogen ion concentration in a solution. The term pH stands for the __________ in the solution.
The pH value is the measure of hydrogen ion concentration in a solution. The term pH stands for the __________ in the solution.
The burnout heat flux in the nucleate boiling regime is not a function of the
The burnout heat flux in the nucleate boiling regime is not a function of the
Pick out the wrong statement.
Pick out the wrong statement.
Joining of thin foils is preferred to be done by
Joining of thin foils is preferred to be done by
Viscoelastic behaviour is observed in __________ materials.
Viscoelastic behaviour is observed in __________ materials.
Which of the following transducers is most commonly used for the measurement of shock and vibration ?
Which of the following transducers is most commonly used for the measurement of shock and vibration ?
Which of the following is not an ore of aluminium?
Which of the following is not an ore of aluminium?
The hydraulic radius of a circular pipe of diameter 'd' flowing full is
The hydraulic radius of a circular pipe of diameter 'd' flowing full is
__________ has a negative co-efficient of linear expansion.
__________ has a negative co-efficient of linear expansion.
Function of fusible plug in a boiler is to
Function of fusible plug in a boiler is to
If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Flywheel is provided in a machine to
Flywheel is provided in a machine to
Photographic plates are coated with
Photographic plates are coated with
Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
In an isochoric process,
In an isochoric process,
Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.
Tin based white metals are used, where bearings are subjected to
Tin based white metals are used, where bearings are subjected to
Ceramic tips for the cutting tool are prepared from __________ powder.
Ceramic tips for the cutting tool are prepared from __________ powder.
In inventory control theory, the economic order quantity (EOQ) is the
In inventory control theory, the economic order quantity (EOQ) is the
Which of the following is not categorised as the ore agglomeration process?
Which of the following is not categorised as the ore agglomeration process?
The most suitable material for a sewer for carrying storm water is
The most suitable material for a sewer for carrying storm water is
A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid?
A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid?
A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m ². The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m² °C.
A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m ². The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m² °C.
__________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.
__________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten.
Steel balls are manufactured by cold heading. After cold forming, they are subjected to
Steel balls are manufactured by cold heading. After cold forming, they are subjected to
The main constituent of bones is
The main constituent of bones is
Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?
Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?
The activity co-efficient of the solute in a dilute solution
The activity co-efficient of the solute in a dilute solution
Function of gear box is to
Function of gear box is to
Fine grained steels have
Fine grained steels have
Liquid nitrogen containers can be made from
Liquid nitrogen containers can be made from
Addition of __________ to steel can not impart it high strength at elevated temperature.
Addition of __________ to steel can not impart it high strength at elevated temperature.
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
Which of the following exemplifies resemblence with the extrusion process ?
Which of the following exemplifies resemblence with the extrusion process ?
Water hammer in pipelines results, when the flowing fluid
Water hammer in pipelines results, when the flowing fluid
The surface tension of a liquid, at critical temperature is
The surface tension of a liquid, at critical temperature is
Presence of sulphur in steel reduces the
Presence of sulphur in steel reduces the
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?
Dialysis is the process of separating substances in the
Dialysis is the process of separating substances in the
Material of construction of the electrode used in the electric resistance welding is
Material of construction of the electrode used in the electric resistance welding is
Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature?
Welded joint is superior to revetted joint in respect of ease of fabrication, weight and strength. Which of the following joints is the most suitable for pipes carrying fluids under high pressure and temperature?
Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?
Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?
Multistage compression of air as compared to single stage compression offers the advantage of
Multistage compression of air as compared to single stage compression offers the advantage of
The most abundant metal present in the earth's crust is;
The most abundant metal present in the earth's crust is;
A fine grained grinding wheel should not be used for grinding __________ materials.
A fine grained grinding wheel should not be used for grinding __________ materials.
Nitriding of a steel part does not increase its
Nitriding of a steel part does not increase its
Out of the following, the rays having the lowest wavelength is the
Out of the following, the rays having the lowest wavelength is the
The starting of a car takes time in winter, because the
The starting of a car takes time in winter, because the
Pick out the correct statement.
Pick out the correct statement.
__________ of austenite decreases the hardenability in steel.
__________ of austenite decreases the hardenability in steel.
Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10⁻² atm, the partial pressure of B is 10⁻³ atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is
Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10⁻² atm, the partial pressure of B is 10⁻³ atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is
Presence of sulphur in the fuel fired in a furnace
Presence of sulphur in the fuel fired in a furnace
Nickel and __________ are the alloying element added in steel to increase its toughness.
Nickel and __________ are the alloying element added in steel to increase its toughness.
The main charge in blast furnace is usually
The main charge in blast furnace is usually
'End cooler' or 'after cooler' is employed in air compressor mainly to
'End cooler' or 'after cooler' is employed in air compressor mainly to
Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore?
Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore?
Which of the following is the most suitable abrasive for grinding high tensile strength materials?
Which of the following is the most suitable abrasive for grinding high tensile strength materials?
Stellite is a trade name for the
Stellite is a trade name for the
Which of the following gases cause global warming?
Which of the following gases cause global warming?
Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
Air intake for an air compressor should be preferably taken from
Air intake for an air compressor should be preferably taken from
The cost of providing service in a queing system decreases with the
The cost of providing service in a queing system decreases with the
Boiler rating is normally done in terms of
Boiler rating is normally done in terms of
A material expanding freely due to heating will develop __________ stress.
A material expanding freely due to heating will develop __________ stress.
Earing is a defect found in steels after the following metal working operation (s).
Earing is a defect found in steels after the following metal working operation (s).
Window panes of aeroplanes are normally made of
Window panes of aeroplanes are normally made of
Commonly employed coolant for high pressure turbogenerator is
Commonly employed coolant for high pressure turbogenerator is
Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with
Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with
For a spontaneous natural process at constant temperature and pressure, the free energy of the system always
For a spontaneous natural process at constant temperature and pressure, the free energy of the system always
Galvanic corrosion
Galvanic corrosion
Which of the following is termed as the boiler mounting ?
Which of the following is termed as the boiler mounting ?
Electrochemical corrosion occurs
Electrochemical corrosion occurs
Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.
Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.
The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be
The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be
The type of pump used for lifting large quantity of sewage is a __________ pump.
The type of pump used for lifting large quantity of sewage is a __________ pump.
Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be
Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be
Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be
Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be
Which of the following metals occurs in nature in their free metallic state?
Which of the following metals occurs in nature in their free metallic state?
Which of the following has the least value of ultimate tensile strength (UTS)?
Which of the following has the least value of ultimate tensile strength (UTS)?
Which of the following is a neutral flux used in the pyrometallurgy of metal extraction?
Which of the following is a neutral flux used in the pyrometallurgy of metal extraction?
In continuous casting of liquid steel, the mould is made of
In continuous casting of liquid steel, the mould is made of
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that
Value of a material is usually considered as a relationship between
Value of a material is usually considered as a relationship between
'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and
'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and
The ultimate strength in tension for steel is __________ times the ultimate strength in shear.
The ultimate strength in tension for steel is __________ times the ultimate strength in shear.
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs.
Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs.
Hydrogen can be
Hydrogen can be
Property responsible for the talcum powder to cling to the skin is the
Property responsible for the talcum powder to cling to the skin is the
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
__________ furnace is generally used in the non-ferrous foundaries.
__________ furnace is generally used in the non-ferrous foundaries.
According to thermodynamic Farenhite scale, the fundamental interval between ice point to steam point is
According to thermodynamic Farenhite scale, the fundamental interval between ice point to steam point is
Number of electrons in the outermost shell of a semi-conductor material is
Number of electrons in the outermost shell of a semi-conductor material is
Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
Ceramic tips for the cutting tool are prepared from __________ powder.
Ceramic tips for the cutting tool are prepared from __________ powder.
Material of construction of surveying metallic tapes is __________ which has low coefficient of expansion & enough strength.
Material of construction of surveying metallic tapes is __________ which has low coefficient of expansion & enough strength.
Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.
Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.
Softening of hardned steel is done by its
Softening of hardned steel is done by its
In a neutral solution
In a neutral solution
Galena is an ore of
Galena is an ore of
Out of the following, the __________ pipe has the least corrosion resistance.
Out of the following, the __________ pipe has the least corrosion resistance.
In chemical dehumidification of air
In chemical dehumidification of air
Pick out the correct statement.
Pick out the correct statement.
Dislocation cross-slip is difficult in those materials, which have
Dislocation cross-slip is difficult in those materials, which have
Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?
Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/ cm².
The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/ cm².
The maximum value, which the residual stress in a material can reach is the __________ of the material.
The maximum value, which the residual stress in a material can reach is the __________ of the material.
A high pressure boiler generates steam at a pressure greater than __________ kg/cm² .
A high pressure boiler generates steam at a pressure greater than __________ kg/cm² .
Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby
Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby
Out of the following __________ iron has the best capability to bear sudden & excessive shocks.
Out of the following __________ iron has the best capability to bear sudden & excessive shocks.
Glass reacts with
Glass reacts with
Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
Hypo (sodium thiosulphate) because of its complex forming behaviour is used in photography to remove undecomposed silver bromide as a soluble complex for __________ of the picture.
Hypo (sodium thiosulphate) because of its complex forming behaviour is used in photography to remove undecomposed silver bromide as a soluble complex for __________ of the picture.
Stresses encountered in the metal forming processes are less than the __________ of the material.
Stresses encountered in the metal forming processes are less than the __________ of the material.
Matte smelting is used in the extraction of
Matte smelting is used in the extraction of
Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong
The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong
The dew point of moist air becomes __________ with decrease in its relative humidity.
The dew point of moist air becomes __________ with decrease in its relative humidity.
Volute casing of a centrifugal pump does not facilitate
Volute casing of a centrifugal pump does not facilitate
Steel is welded using the __________ flame.
Steel is welded using the __________ flame.
Tesla metre per ampere (T. m/A) is the unit for the measurement of
Tesla metre per ampere (T. m/A) is the unit for the measurement of
Steels with high carbon equivalent have poor weldability, because in these steels during welding
Steels with high carbon equivalent have poor weldability, because in these steels during welding
Which of the following material handling equipments is not suitable for moving materials in varying paths?
Which of the following material handling equipments is not suitable for moving materials in varying paths?
__________ the exhaust gas is an indication of the incomplete combustion of fuel.
__________ the exhaust gas is an indication of the incomplete combustion of fuel.
Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
Which of the following is not an ore of aluminium?
Which of the following is not an ore of aluminium?
The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?
The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?
Thermal expansion of solid is employed in the temperature measurement by a
Thermal expansion of solid is employed in the temperature measurement by a
The primary strengthening mechanism in 70 : 30 brass is the
The primary strengthening mechanism in 70 : 30 brass is the
The refrigerant freon-12 is chemically
The refrigerant freon-12 is chemically
Thermal conductivity of a material does not depend upon its
Thermal conductivity of a material does not depend upon its
Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.
Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.
Electrolytes conduct electric current by
Electrolytes conduct electric current by
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
__________ addition increases the depth of hardness of steel.
__________ addition increases the depth of hardness of steel.
Reduction in the grain size reduces the __________ of the material.
Reduction in the grain size reduces the __________ of the material.
Yield strength of a polycrystalline metal with an average grain size, d, is proportional to
Yield strength of a polycrystalline metal with an average grain size, d, is proportional to
Heat dissipation in cooling towers is mainly by
Heat dissipation in cooling towers is mainly by
In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient ).
In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient ).
__________ cycle is the most efficient thermodynamic cycle.
__________ cycle is the most efficient thermodynamic cycle.
The life of a ball bearing is inversely proportional to
The life of a ball bearing is inversely proportional to
Three elastic constants for a completely anisotropic elastic material which follows the Hooke's law are young's modulus, elastic limit stress and yield stress. Which of the following properties is most sensitive to increase in strain rate ?
Three elastic constants for a completely anisotropic elastic material which follows the Hooke's law are young's modulus, elastic limit stress and yield stress. Which of the following properties is most sensitive to increase in strain rate ?
The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.
The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.
__________ number is sometimes used in place of Grashoff number in free convection heat transfer.
__________ number is sometimes used in place of Grashoff number in free convection heat transfer.
The underground well of a biogas plant is called the
The underground well of a biogas plant is called the
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
Satellites burn off during re-entry to earth's atmosphere, because of the
Satellites burn off during re-entry to earth's atmosphere, because of the
Heat release during phase change is observed in case of a/an
Heat release during phase change is observed in case of a/an
Which of the following has the highest modulus of elasticity (about 7 x 10⁶ kg/cm²) ?
Which of the following has the highest modulus of elasticity (about 7 x 10⁶ kg/cm²) ?
Fatigue life is expected to increase by
Fatigue life is expected to increase by
For dynamic strain measurement, the wheatstone bridge used is of __________ type.
For dynamic strain measurement, the wheatstone bridge used is of __________ type.
Floating control action
Floating control action
Material having negative co-efficient of linear expansion is
Material having negative co-efficient of linear expansion is
In a good rimming steel
In a good rimming steel
Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of
Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of
Sheardising process is used for
Sheardising process is used for
Broaching tools are usually made of
Broaching tools are usually made of
The tensile load-elongation curve of a metal does not describe
The tensile load-elongation curve of a metal does not describe
A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is
A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is
Hydrocyclone is a
Hydrocyclone is a
Fog is an example of colloidal system of
Fog is an example of colloidal system of
As the fluid flow rate increases, the float of the rotameter
As the fluid flow rate increases, the float of the rotameter
Which of the following is used to produce draught in the locomotive boilers ?
Which of the following is used to produce draught in the locomotive boilers ?
If Reynolds number is greater than 1, then the
If Reynolds number is greater than 1, then the
Cathodic protection is widely used in controlling corrosion in
Cathodic protection is widely used in controlling corrosion in
Principal alloying element in Elinvar (used for making hair springs for watches) is
Principal alloying element in Elinvar (used for making hair springs for watches) is
The speed of sound will be maximum in
The speed of sound will be maximum in
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)
Which of the following does not lower the surface tension of liquids ?
Which of the following does not lower the surface tension of liquids ?
Faraday's law of electrolysis is related to the
Faraday's law of electrolysis is related to the
Superheating of steam is done at constant
Superheating of steam is done at constant
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
Increasing the temperature of a material makes it
Increasing the temperature of a material makes it
Reduction reaction involves the
Reduction reaction involves the
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.
The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.
Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore?
Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore?
The order of a chemical reaction
The order of a chemical reaction
Which of the following alloying elements is present in maximum percentage in high speed steel.
Which of the following alloying elements is present in maximum percentage in high speed steel.
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of
In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.
In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
Malleabilisation heat treatment is performed on
Malleabilisation heat treatment is performed on
Identify the false statement
Identify the false statement
In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.
In spite of large heat transfer co-efficients in boiling liquids, fins are used advantageously, where the entire surface is exposed to __________ boiling.
The conventional mechnical transducer, which converts pressure signal to displacement signal is
The conventional mechnical transducer, which converts pressure signal to displacement signal is
The Al2 O₃ content of cryolite in Hall-Heroult's cell is maintained between __________ percent.
The Al2 O₃ content of cryolite in Hall-Heroult's cell is maintained between __________ percent.
In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is
In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is
The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
Age hardening is connected with
Age hardening is connected with
Gas carrying pipelines are best joined by
Gas carrying pipelines are best joined by
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
Encyclopaedia of Chemical Technology has been
Encyclopaedia of Chemical Technology has been
Silicon percentage in silicon steel used for electrical equipments is about
Silicon percentage in silicon steel used for electrical equipments is about
Pick out the correct statement.
Pick out the correct statement.
Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
Addition of silicon to aluminium improves its
Addition of silicon to aluminium improves its
For the Stoke's law to be valid in the case of a falling sphere in a fluid, the
For the Stoke's law to be valid in the case of a falling sphere in a fluid, the
Lead percentage in pure galena is about
Lead percentage in pure galena is about
The atmospheric temperature during melting of ice/snow (in the atmosphere)
The atmospheric temperature during melting of ice/snow (in the atmosphere)
Which of the following is the most suitable for removing fine particles (< 1 micron diameter) from air below its dew point?
Which of the following is the most suitable for removing fine particles (< 1 micron diameter) from air below its dew point?
Fibre reinforced plastic (FRP) are
Fibre reinforced plastic (FRP) are
Knocking tendency in a petrol engine decreases with increasing
Knocking tendency in a petrol engine decreases with increasing
Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.
'Amortization' in respect of financial obligation of a company means the
'Amortization' in respect of financial obligation of a company means the
'Ice point' is designated on Farenhite temperature scale by
'Ice point' is designated on Farenhite temperature scale by
The lightest non-inflammable gas is
The lightest non-inflammable gas is
Pick out the wrong statement.
Pick out the wrong statement.
For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
Which of the following is termed as the boiler mounting ?
Which of the following is termed as the boiler mounting ?
Safety matches is produced using
Safety matches is produced using
