Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is
Nickel
Cobalt
Vanadium
Platinum
- Baffles provided on the shell side of a shell and tube heat exchanger are meant for
- Which of the following metals cannot be hot worked at room temperature?
- A material in which the atoms are arranged regularly in some directions but not in others, is termed…
- Brittleness induced due to the presence of sulphur in steel can be reduced by adding
- Powder metallurgy is used to produce
- The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.
- A material subjected __________ must have high resilience.
- In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold…
- Which of the following is the most suitable material of construction for the condenser tubes, where…
- The property of material, by which a given amount of energy is absorbed by it, without plastic deformation,…
- Batch process is preferred over continuous process, when the
- As per international norms, the maximum permissible value of noise level in the industrial environment…
- The atmospheric temperature during melting of ice/snow (in the atmosphere)
- Between 230 and 370°C, blue brittleness is caused in mild steel because of the
- Silicon percentage in acid resistant cast iron is about
- High relative humidity decreases the evaporative process and as the temperature is increased, the relative…
- Limestone is added in the blast furnace (during pig iron manufacture) to
- Dew point temperature always gives an indication of the __________ of the moist air.
- Boiler draught of 10 mm water column is equivalent to
- Unbreakable crockeries are made from __________ polymers.
- __________ can replace tungsten in high speed steel.
- Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed…
- Fahrenheit and Centigrade scales have the same readings at
- Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil,…
- Tin based white metals are used, where bearings are subjected to
- Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA)?
- An example of unsteady non uniform flow is the flow of liquid under pressure through a
- Which of the following is a boiler accessory i.e., not a boiler mounting?
- Principal alloying element in Elinvar (used for making hair springs for watches) is
- The mechanism involved in the removal of metal in drilling operation is by