Practice Test


1) The impurities associated with minerals are called


2) Most of the metals which occur in native state


3) The metallic core of lithosphere is called


4) The process of extracting the metal from its ore is called


5) During smelting, an additional substance is added which combines with impurities to form a fusible product which is known as


6) Roasting results in the production of metal in the case of


7) The method for the purification of impure metals which is based upon the phenomenon of electrolysis is called


8) An example of halide ore is


9) Carbon is used as a reducing agent in the extraction of


10) Coke is used in metallurgical process chiefly as


11) Zone refining has been employed for preparing ultra pure samples of


12) Titanium can be obtained in a state of high purity by


13) Which of the following is not found in Bihar in rich amounts?


14) The sulphide ores are generally concentrated by


15) The role of calcination in metallurgical operations is


16) Cyanide process is used for obtaining


17) Van Arkel method is used for refining


18) The metal always found in free state is


19) Of the following, the metal that cannot be obtained by electrolysis of the aqueous solution of their salts is


20) Cupellation process is used in the metallurgy of


21) A common metal which can be used for the extraction of metals from their oxides by reduction is


22) The process in which lighter earthy particles are freed from the heavier particle by washing with water is called


23) Which of the following metals cannot be extracted by carbon reduction process?


24) In blast furnace, iron oxide is reduced by


25) In metallurgical processes, the flux used for removing acidic impurities is


26) Parkes process is used in the extraction of


27) In electrorefining, the impure metal is made


28) Van Arkel mathod of purification of metals involves converting the metal to a


29) Ilmenite is a mineral of


30) The most common contituent of steel is


31) Purest form of iron is


32) The oil used in the froth floatation method for the purification of ores is


33) Slag is


34) Roasting is generally done in case of


35) Complex salt formation takes place in the extraction of


36) Sapphire is a mineral of


37) Rutile is an important ore of


38) Which of the following does not form amalgam?


39) An important ore of tin is


40) The smelting of iron in a blast furnace involves all the steps except


41) Heating iron pyrites in air to remove sulphur is called


42) Which of the following is purified by zone refinig?


43) In metallurgy, flux is a substance used to convert


44) Which of the following metals is obtained by self reduction process?


45) Spelter is


46) Thomas slag is


47) Which of the following is generally found in free state?


48) In aluminothermic process aluinium acts as


49) Smelting is the process of reduction of metal oxide by


50) Which of the following ores cannot be cocentrated by froth floatation process?


51) Specific gravity of slag is


52) The most abundant metal in earth crust is


53) Gold is usually found near the mineral


54) Electrolytic reduction method is used for


55) Liquation can be used for refining of


56) Hoops process is used for the purification of


57) Which of the following is not an ore of iron?


58) Cassiterite is an ore of


59) Which of the following is an ore of gold?


60) Which of the following is not an ore of aluminium?


61) Which of the following is an ore of two metals?


62) Which of the following is not present in type metal?


63) Rolled gold contains


64) Which of the following alloys is used for making clock pendulums?


65) Which of the following alloys contains one metal same as brass?


66) Which of the following alloys does not contain copper?


67) Which of the following metals is not present in rose metal?


68) Which of the following contains both Ca and Mg?


69) During cupellation process for purification of silver, the most common impurity removed is


70) In German silver, the percentage of silver is approximately


71) The metal essential for plant life is


72) In electrorefining of copper, pure copper is obtained


73) Blister copper is


74) Pentalanbite is an ore of


75) The approximate percentage of gold in rolled gold is


76) Glauber's salt contains


77) The ore of copper is


78) Which of the following metals does not occur as oxide?


79) Calcination is carried out in a


80) Steel differs from pig iron and wrought iron because it contains


81) A metal obtained by hydrometallurgy is


82) The most abundant metal present in the human body is


83) Magnesium is not present in


84) Serpecks process is used for the extraction of


85) Zinc is involved in the functioning of


86) The mineral of magnesium is


87) Which of the following relations is correct?


88) Chlorophyll contains the metal


89) Which of the following is not found in native state?


90) In the metallurgy of iron, when limestone is added to blast furnace, the calcium ion ends up in


91) German silver is an alloy of copper and


92) Iron obtained from blast furnace is known as


93) Mac Arthur Forrest process is used for the extraction of ______ ores.


94) Which of the following metal is extracted by cyanide process?


95) Invar is an alloy of


96) Parkes process is used in the extraction of


97) Cinnabar is an ore of


98) The main ore of iron is its


99) Copper is refined by


100) Which of the following is an ore of iron?


101) Galena is an ore of


102) Malachite is an ore of


103) The cyanide process is used for the extraction of


104) Azurite is an ore of


105) Kainit is an ore of


106) Anglesite is an ore of


107) An example of halide ores is


108) Cupellation process is used in the metallurgy of


109) Sulphide ore of zinc is concentrated by


110) Which of the following is not an ore?


111) Carbon reduction method is used in the extraction of


112) The process of removal of impurities from a crude metal is called


113) Which of the following metals is purified by poling?


114) The oil commonly used in froth floatation process for purification of ores is


115) Heating of pyrite in air to remove sulphur is known as


116) Which of the following methods is based on distribution principle?


117) Steel contains


118) In the metallurgy of iron, limestone is added to blast furnace, the calcium ion ends up in


119) Cassiterite is an ore of


120) L.D. process is used for the manufacture of


121) While extracting an element from its ore, the ore is ground and leached with dil. KCN solution to form the soluble product potassium argento cyanide. The element is


122) High purity copper metal is obtained by


123) In blast furnace, the highest temperature is in


124) Silica is added to roasted copper ore during smelting in order to remove


125) The method of zone refining of metals is based on the principle of


126) Which of the following is not a basic flux?


127) During roasting of zinc blende, it converts to


128) An ore after levigation is found to contain basic impurities. The flux which can be used during smelting is


129) Which of the following processes involves smelting process?


130) The flux used in the extraction of iron from haematite in the blast furnace is


131) The only vitamin with a metal atom in it is


132) Horn silver is


133) The main reducing agent in the extraction of iron by blast furnace is


134) The metal ion present in haemoglobin and responsible for oxygen uptake is


135) Aluminium is obtained by


136) Copper pyrite, the chief ore of copper, is chemically


137) Iron is extracted from magnetite by reduction with


138) Which of the following is malachite ore?


139) Rinman's green is a green pigment. Its formula is


140) The roasting of HgS in air produces


141) Which of the following metals will precipitate when a zinc rod is dipped in the solution of?


142) Pyrargyrite is


143) The most electropositive metals are isolated from their ores by


144) The most abundant element in the earths crust (by weight) is


145) Nickel is purified by thermal decomposition of its


146) The metal always found in free state is


147) Electromagnetic separation is used in the concentration of


148) An ore of potassium is


149) The substance which is added to ore in order to remove impurities during smelting is known as


150) Corundum is an ore of


151) High purity copper is obtained by


152) Process of heating an ore in air to remove sulphur is


153) The correct statement is


154) Which of the following is not a mineral iron?


155) Mond's process is used for


156) Which of the following is a carbonate are?


157) Which is not an ore of lead?


158) Sulphide ores of metals are usually concentrated by froth flotation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?


159) Which of the following elements is present as the impurity to the maximum extent in the pig iron?


160) Which of the following pairs of metals is purified by van Arkel method?


161) In Hall's process, the main reagent is mixed with


162) Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?


163) Which of the following methods is used for obtaining aluminium metal?


164) Which of the following pairs of elements forms about 75% of the total constituents of the earth?


165) Which of the following is the sulphide ore of copper?


166) Which of the following is not a basic flux?


167) In alumino thermic process, Al acts as


168) Froth floatation process is based on


169) Autoreduction process is used for the extraction of


170) The process used to concentrate an ore is called :


171) Silicate crust of the earth is


172) Thomas slag is


173) The elements present in haemoglobin, sea weeds and chlorophyll are respectively


174) The third most abundant element in the earth's crust is


175) Which of the following represents a silicate ore?


176) Which of the following is not a sulphide ore?


177) In electro - refining the impure metal is made


178) In which of the following pair, both the ores are not of same type?


179) Cassiterite and Cerrusite are respectively:


180) Which of the following is not an ore of magnesium?


181) The ores that are concentrated by floatation method are


182) Electrolytic reduction method is used in extraction of


183) The purpose of smelting an ore is to


184) Which of the following metal is obtained by leaching its ore with dilute cyanide solution?


185) A common metal used for the extraction of metals from their oxides by reduction is


186) A substance which reacts with gangue to form fusible material is called


187) Which of the following metals cannot be extracted by carbon reduction process?


188) Van Arkel method of purification of metals involves converting the metal to a


189) The reason for floating of ore particles in concentration by froth floatation process is that


190) Which of the following metal is obtained by leaching its ore with dilute cyanide solution?


191) The process of converting hydrated alumina into anhydrous alumina is called