__________ is the hardest material out of the following.
Boron carbide
Tungsten carbide
Hardened steel
Silicon carbide
- Yield strength of a material is determined by the __________ test.
- Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying…
- The leaching solvent used in Baeyer's process for the purification of bauxite is
- Diffusion co-efficient of a metal in a solid solution depends upon its
- Cold chisels hammers are made of
- The effect of friction on the flow of steam through a nozzle is to decrease the __________ of steam.
- The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer…
- Heating of ferromagnetic materials to a temperature above Curie temperature makes it
- Production of one ton of paper in Indian paper industry consumes about __________ kWh of electricity.
- __________ joint is mostly used for joining pipes carrying water at low pressure.
- Rankine cycle comprises of two isothermal and two __________ processes.
- The thickness of oxide film is y at time t. If are the temperature dependent constants, the parabolic…
- __________ rubber is generally used for making 'O' rings used for vacuum sealings.
- The substance used as a smoke screen in warfare is
- The product of a commercial direct reduction process is
- Electrometallurgy is not involved in the extraction of __________ from its ore.
- __________ property of steel increases by addition of large amount of silicon in it.
- The elastic strain in copper is due to the
- On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate…
- Which of the following is the largest quantum of pressure?
- High endurance limit of carburised machine parts is because of the fact that carburisation
- Pick out the correct combination about the role of various additives used in polymers.
- Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing…
- Absolute zero pressure can be attained at a temperature of
- Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed…
- Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement.…
- Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
- Pick out the wrong statement about coating/electroplating of metals.
- Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.
- All of the following alloying elements of steel increases hardness but sacrifice ductility, except