For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg)?
Propane and acetylene
Propane and LPG
Sewage gas and gobar gas
B.F gas and coke oven gas
- Electrometallurgical methods of metal extraction is normally used for those metals
- Yield strength of a material is determined by the __________ test.
- Brinell Hardness Number (BHN) for talc is approximately in the range of
- The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation…
- Plastics as a material of construction suffer from the drawback of low
- __________ wire is never used for making the heating element.
- The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is…
- The refrigerant freon-12 is chemically
- Encyclopaedia of Chemical Technology has been
- The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
- Brazing filler metal used for joining steel plates
- Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are __________…
- Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxyacetylene…
- Liquid nitrogen containers can be made from
- __________ is used as a material of construction for the blade of power saw.
- Which of the following is not a ferromagnetic material?
- Cementite is in the lamellar form in the __________ phase of steel.
- X-rays are
- The 'laughing gas' is
- Particle nature of cathode rays is proved due to the fact that they
- Aluminium is extracted from
- A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle…
- In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 =…
- Fibre glass is a composite material of
- Addition of __________ to steel does not impart hardness.
- All of the following alloying elements of steel increases hardness but sacrifice ductility, except
- Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be
- Stellite is a __________ material.
- Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
- Force between the molecules of the same substance is called __________ force.