Which of the following is an ore dressing operation?
Classification
Smelting
Roasting
None of these
- Surface tension of a liquid
- The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
- Wood is a/an __________ material.
- More than 95% of __________ is present in corundum.
- Electrometallurgy is not involved in the extraction of __________ from its ore.
- In the Bayer's process, bauxite is digested under pressure using
- The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D…
- Desalination of water
- In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The…
- For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
- Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when…
- __________ is used as a material of construction for the blade of power saw.
- Auto collimator is used to check
- For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship…
- Energy of the sun arises mainly from __________ reactions.
- Methyl orange indicator turns
- Biological shield in a nuclear reactor is generally provided to protect against the
- Hot extrusion of aluminium is done in the temperature range of __________ °C.
- In an eutectic system, two elements are completely
- A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K…
- Cementite is in the lamellar form in the __________ phase of steel.
- Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
- Screws are specified by their __________ diameters.
- __________ number determines whether the fluid flow in an open channel is supercritical, critical or…
- When an isolated thermodynamic system executes a process,
- Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be…
- Which of the following fastening devices has its both ends threaded?
- The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.
- Material of construction of the electrode used in the electric resistance welding is
- The specific gravity of coal depends mainly on its __________ content.