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1. Metal is extracted from Sulphide ores by:
Answer: Froth floatation
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QA->Metal is extracted from Sulphide ores by:....
QA->Sulphide ores are purified by _____________ process....
QA->Sulphide ores are purified by _____________ process.....
QA->___________ is the mineral from which the metal is conveniently and economically extracted....
QA->Which metal is extracted by thermal reduction process?....
MCQ-> Exhibit I as under provides the data of India's Merchandize Imports (Billion US Dollar) on left axis and Percentage of Food: Fuel, Manufactures and Ores & Metals lmports of India's on the right axis. Similarly; Exhibit 2 provides data of India's Merchandize Exports (Billion US Dollar) on left axis and Percentage exports of Food, Fuel, Manufactures and Ores & Metals on the right axis. Attempt the questions in the context of information provided as under:A.Trade Balance = Import Minus Exports b:Trade Deficit If Imports are more than Exports c:TradeSurplus= If Exports are more than Imports
Exhibit 1: India's Total Merchandize Imports (US Dollar in Billion) and Percentage Imports of Food, Fuel, Manufacturers and Ores and Metals (2012 - 2016)
Exhibit 2: India's Total Merchandize Exports (US Dollar in Billion) and Percentage Exports of Food, Fuel, Manufacturers and Ores and Metals (2012 - 2016)
What shall be approximate Manufactures exportS of India in ihe year 2016 based on average exports for the period 2012-2016?
...
MCQ->The simplest method of welding two pieces of metal together is known as pressure welding.The ends of a metal are heated to a white heat-for iron,the welding temperature should be about 1300C-in a flame.At this temperature the metal becomes plastic.The ends are pressed or hammered together,and the joint is smoothed off.Care must be taken to ensure that surfaces are thoroughly clean first,for dirt will weaken the weld.Moreover,the heating of iron or steel to a high temperature cause oxidation,and a film of oxide is added to the heated surfaces.For this reason,flux is applied to the heated metal.At welding heat,flux melts and the oxide particles are dissolved in it together with any other impurities which may be present.The metal surfaces are pressed together,and the flux is squeezed out from the center of the weld.A number of different types of weld may be used,but for fairly thick bars of metals,a vee-shaped belt should be normally employed.It is rather stronger than ordinary butt weld. The simplest way of welding two pieces of metal together is...
MCQ->Statements All metals are plastics. All plastics are ores. Some ores are wood.Conclusions I. All wood being metals is a possibility. II. No are is a metal....
MCQ->Concentration of sulphide ores is done usually by...
MCQ->There is practically no alternative/competitor to __________ in the beneficiation treatment of sulphide ores....
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