-
question_answer1)
The most abundant element on earth crust is [MP PMT 1972, 80, 84; DPMT 1986]
A)
Hydrogen done
clear
B)
Oxygen done
clear
C)
Silicon done
clear
D)
Carbon done
clear
View Solution play_arrow
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question_answer2)
Naturally occurring substances from which a metal can be profitably (or economically) extracted are called [CPMT 1982; MP PET 1996]
A)
Minerals done
clear
B)
Ores done
clear
C)
Gangue done
clear
D)
Salts done
clear
View Solution play_arrow
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question_answer3)
Titanium containing mineral found in our country is [NCERT 1984; RPET 1999]
A)
Bauxite done
clear
B)
Dolomite done
clear
C)
Chalcopyrites done
clear
D)
Elmanite done
clear
View Solution play_arrow
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question_answer4)
Silicon is main constituent of [DPMT 1985]
A)
Alloys done
clear
B)
Rocks done
clear
C)
Animals done
clear
D)
Vegetables done
clear
View Solution play_arrow
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question_answer5)
Ore pitch blende is main source of [DPMT 1985; RPET 1999]
A)
\[Ra\] done
clear
B)
\[Ce\] done
clear
C)
\[Th\] done
clear
D)
\[Mg\] done
clear
View Solution play_arrow
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question_answer6)
Which of ore is metalloid [MP PMT 1987]
A)
\[As\] done
clear
B)
\[Na\] done
clear
C)
\[Au\] done
clear
D)
\[Fe\] done
clear
View Solution play_arrow
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question_answer7)
A mineral is called an ore if [MP PMT 1990]
A)
Metal present in mineral is precious done
clear
B)
Metal can be extracted from it done
clear
C)
Metal can be extracted profitably from it done
clear
D)
Metal cannot be extracted from it done
clear
View Solution play_arrow
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question_answer8)
The highest quantity present in the atmosphere is of [NCERT 1971, 79; CPMT 1972]
A)
Oxygen done
clear
B)
Hydrogen done
clear
C)
Nitrogen done
clear
D)
Ozone done
clear
View Solution play_arrow
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question_answer9)
Which of the following statement is correct
A)
Bauxite is an ore of aluminium done
clear
B)
Magnetite is an ore of manganese done
clear
C)
Haematite is an ore of mercury done
clear
D)
Pyrites is an ore of phosphorus done
clear
View Solution play_arrow
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question_answer10)
Carnellite is a mineral of [CBSE PMT 1988; DPMT 1983; AMU 1999]
A)
\[Ca\] done
clear
B)
\[Na\] done
clear
C)
\[Mg\] done
clear
D)
\[Zn\] done
clear
View Solution play_arrow
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question_answer11)
The salt which is least likely to be found in minerals is [DPMT 1984]
A)
Chloride done
clear
B)
Sulphate done
clear
C)
Sulphide done
clear
D)
Nitrate done
clear
View Solution play_arrow
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question_answer12)
Metal which can be extracted from all the three dolomite, magnesite and carnallite is [MP PET 1985]
A)
\[Na\] done
clear
B)
\[K\] done
clear
C)
\[Mg\] done
clear
D)
\[Ca\] done
clear
View Solution play_arrow
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question_answer13)
Cinnabar is an ore of [DPMT 1982, 84; CBSE PMT 1991; MNR 1986; CPMT 1973, 76, 78, 79, 86, 89, 94; UPSEAT 1999]
A)
\[Hg\] done
clear
B)
\[Cu\] done
clear
C)
\[Pb\] done
clear
D)
\[Zn\] done
clear
View Solution play_arrow
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question_answer14)
Metallurgy is the process of [MP PET 2001]
A)
Concentrating the ore done
clear
B)
Roasting the ore done
clear
C)
Extracting the metal from the ore done
clear
D)
Adding carbon to the ore in blast furnace done
clear
View Solution play_arrow
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question_answer15)
What is believed to be the second most common element in the universe [MP PET 2000]
A)
Helium done
clear
B)
Hydrogen done
clear
C)
Nitrogen done
clear
D)
Silicon done
clear
View Solution play_arrow
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question_answer16)
Which of the following substances consists of only one element [MP PET 1999, 2000]
A)
Marble done
clear
B)
Sand done
clear
C)
Diamond done
clear
D)
Glass done
clear
View Solution play_arrow
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question_answer17)
Which of the following minerals is not an ore of aluminum
A)
Bauxite done
clear
B)
Gypsum done
clear
C)
Cryolite done
clear
D)
Corundum done
clear
View Solution play_arrow
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question_answer18)
An example of halide ore is [MP PMT 1993]
A)
Galena done
clear
B)
Bauxite done
clear
C)
Cinnabar done
clear
D)
Cryolite done
clear
View Solution play_arrow
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question_answer19)
Which of the following is not an ore [IIT 1982]
A)
Bauxite done
clear
B)
Malachite done
clear
C)
Zinc blende done
clear
D)
Pig iron done
clear
View Solution play_arrow
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question_answer20)
?Chile saltpetre? is an ore of [CPMT 1982]
A)
Iodine done
clear
B)
Sodium done
clear
C)
Bromine done
clear
D)
Magnesium done
clear
View Solution play_arrow
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question_answer21)
Which of the following metal is not found in free state
A)
\[Na\] done
clear
B)
\[Au\] done
clear
C)
\[Ag\] done
clear
D)
\[Pb\] done
clear
View Solution play_arrow
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question_answer22)
Which of the following ore is used for industrial extraction of aluminium in India [MP PET 1989]
A)
Corundum done
clear
B)
Keolin done
clear
C)
Cryolite done
clear
D)
Bauxite done
clear
View Solution play_arrow
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question_answer23)
Bauxite is an oxide ore of [BHU 1979; AFMC 1980; Kurukshetra CEE 1998; RPET 1999; CPMT 1976, 2001, 02]
A)
Barium done
clear
B)
Boron done
clear
C)
Bismuth done
clear
D)
Aluminium done
clear
View Solution play_arrow
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question_answer24)
Cryolite is [AMU 1983]
A)
Magnesium silicate done
clear
B)
Sodium borofluoride done
clear
C)
Sodium aluminium fluoride done
clear
D)
Magnesium silicate done
clear
View Solution play_arrow
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question_answer25)
Composition of bauxite is
A)
\[A{{l}_{2}}{{O}_{3}}\] done
clear
B)
\[A{{l}_{2}}{{O}_{3}}.\,{{H}_{2}}O\] done
clear
C)
\[A{{l}_{2}}{{O}_{3}}.\,2{{H}_{2}}O\] done
clear
D)
\[A{{l}_{2}}{{O}_{3}}.\,3{{H}_{2}}O\] done
clear
View Solution play_arrow
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question_answer26)
Main ore of aluminium is [CPMT 1989, 91, 2001; RPMT 1997; RPET 1999] [CPMT 2002, MP PMT 1999]
A)
Bauxite done
clear
B)
Corundum done
clear
C)
Cryolite done
clear
D)
Magnetite done
clear
View Solution play_arrow
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question_answer27)
Corundum is [CPMT 1975, 76; DPMT 1983]
A)
\[Sr{{O}_{2}}\] done
clear
B)
\[A{{l}_{2}}{{O}_{3}}\] done
clear
C)
\[CaC{{l}_{2}}\] done
clear
D)
\[C{{u}_{2}}C{{l}_{2}}\] done
clear
View Solution play_arrow
-
question_answer28)
Which is not a mineral of aluminium [BHU 1974, 79; MNR 1984; DPMT 2002]
A)
Anhydrite done
clear
B)
Bauxite done
clear
C)
Corundum done
clear
D)
Diaspore done
clear
View Solution play_arrow
-
question_answer29)
Which of the following mineral does not contain \[Al\] [IIT (Screening) 1992]
A)
Cryolite done
clear
B)
Mica done
clear
C)
Feldspar done
clear
D)
Fluorspar done
clear
View Solution play_arrow
-
question_answer30)
An important oxide ore of iron is [MP PET/PMT 1998; MP PET 1990; MP PMT 1994, 96]
A)
Haematite done
clear
B)
Siderite done
clear
C)
Pyrites done
clear
D)
Malachite done
clear
View Solution play_arrow
-
question_answer31)
Which ore is used for the manufacture of iron [CPMT 1973, 79; RPET 2000]
A)
Cryolite done
clear
B)
Bauxite done
clear
C)
Haematite done
clear
D)
Chalcopyrites done
clear
View Solution play_arrow
-
question_answer32)
Formula of magnetite is [CPMT 1991]
A)
\[F{{e}_{2}}{{O}_{3}}\] done
clear
B)
\[Fe{{S}_{2}}\] done
clear
C)
\[FeC{{O}_{3}}\] done
clear
D)
\[F{{e}_{3}}{{O}_{4}}\] done
clear
View Solution play_arrow
-
question_answer33)
Which of the following is ferrous alloy [DPMT 1982, 84; CPMT 1989]
A)
Invar done
clear
B)
Solder done
clear
C)
Magnalium done
clear
D)
Type metal done
clear
View Solution play_arrow
-
question_answer34)
Which of the following ores does not represent the ore of iron [CPMT 1989; AIIMS 2002]
A)
Haematite done
clear
B)
Magnetite done
clear
C)
Cassiterite done
clear
D)
Limonite done
clear
View Solution play_arrow
-
question_answer35)
The formula of haematite is [MNR 1994]
A)
\[F{{e}_{3}}{{O}_{4}}\] done
clear
B)
\[F{{e}_{2}}{{O}_{3}}\] done
clear
C)
\[FeC{{O}_{3}}\] done
clear
D)
\[Fe{{S}_{2}}\] done
clear
View Solution play_arrow
-
question_answer36)
Which metal is not silvery white
A)
\[Ni\] done
clear
B)
\[Cu\] done
clear
C)
\[Na\] done
clear
D)
\[Sn\] done
clear
View Solution play_arrow
-
question_answer37)
Azurite is an ore of
A)
\[Ag\] done
clear
B)
\[Cu\] done
clear
C)
\[Pt\] done
clear
D)
\[Au\] done
clear
View Solution play_arrow
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question_answer38)
Copper can be extracted from [NCERT 1973; IIT 1978; J & K 2005]
A)
Kupfernickel done
clear
B)
Dolomite done
clear
C)
Galena done
clear
D)
Malachite done
clear
View Solution play_arrow
-
question_answer39)
Which of the following ore is called malachite [CPMT 1989, 93]
A)
\[C{{u}_{2}}S\] done
clear
B)
\[CuC{{O}_{3}}.Cu{{(OH)}_{2}}\] done
clear
C)
\[C{{u}_{2}}O\] done
clear
D)
\[CuC{{O}_{3}}\] done
clear
View Solution play_arrow
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question_answer40)
Argentite is a mineral of [CPMT 1978; MP PMT/PET 1988]
A)
Copper done
clear
B)
Silver done
clear
C)
Platinum done
clear
D)
Gold done
clear
View Solution play_arrow
-
question_answer41)
Which one of the following is an ore of silver [CPMT 1983; MP PET 1989; CBSE PMT 1993]
A)
Argentite done
clear
B)
Stibnite done
clear
C)
Haematite done
clear
D)
Bauxite done
clear
View Solution play_arrow
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question_answer42)
Calamine is [BHU 1980, 85; CPMT 1990; MNR 1995; UPSEAT 1999]
A)
\[ZnS{{O}_{4}}\] done
clear
B)
\[ZnO\] done
clear
C)
\[Zn{{(N{{O}_{3}})}_{2}}\] done
clear
D)
\[ZnC{{O}_{3}}\] done
clear
View Solution play_arrow
-
question_answer43)
Important ore of zinc is [CPMT 1973, 78, 80]
A)
Calamine done
clear
B)
Cryolite done
clear
C)
Gibsite done
clear
D)
Malachite done
clear
View Solution play_arrow
-
question_answer44)
Which of the following statement is incorrect [CPMT 1985]
A)
Silver glance mainly contains silver sulphide done
clear
B)
Gold is found in native state done
clear
C)
Zinc blende mainly contain zinc chloride done
clear
D)
Copper pyrites also contain \[F{{e}_{2}}{{S}_{3}}\] done
clear
View Solution play_arrow
-
question_answer45)
Commercially important ore of lead from which it is extracted is [DPMT 1982, 96; MP PMT 2000]
A)
Siderite done
clear
B)
Haematite done
clear
C)
Galena done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer46)
Which of the following is not an ore of lead [MP PMT 1993]
A)
Galena done
clear
B)
Anglesite done
clear
C)
Calamine done
clear
D)
Cerrusite done
clear
View Solution play_arrow
-
question_answer47)
Galena is
A)
\[PbO\] done
clear
B)
\[PbC{{O}_{3}}\] done
clear
C)
\[PbS\] done
clear
D)
\[PbC{{l}_{2}}\] done
clear
View Solution play_arrow
-
question_answer48)
An example of an oxide ore is [MP PET 1996]
A)
Bauxite done
clear
B)
Malachite done
clear
C)
Zinc blende done
clear
D)
Felspar done
clear
View Solution play_arrow
-
question_answer49)
Cryolite is an ore of [MP PMT 1996; BHU 2002; DPMT 1996]
A)
Iron done
clear
B)
Silver done
clear
C)
Zinc done
clear
D)
Aluminium done
clear
View Solution play_arrow
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question_answer50)
Cassiterite is an ore of [CBSE PMT 1999; DPMT 1996]
A)
\[Mn\] done
clear
B)
\[Ni\] done
clear
C)
\[Sb\] done
clear
D)
\[Sn\] done
clear
View Solution play_arrow
-
question_answer51)
Which one of the following is the most abundant element in the universe [NDA 1999]
A)
Nitrogen done
clear
B)
Hydrogen done
clear
C)
Oxygen done
clear
D)
Silicon done
clear
View Solution play_arrow
-
question_answer52)
Among the following statements, the incorrect one is [IIT 1997]
A)
Calamine and siderite are carbonates done
clear
B)
Argentite and cuprite are oxides done
clear
C)
Zinc blende and pyrites are sulphides done
clear
D)
Malachite and azurite are ores of copper done
clear
View Solution play_arrow
-
question_answer53)
Which one of the following ores is a chloride [EAMCET 1997; CPMT 2001]
A)
Horn silver done
clear
B)
Zincite done
clear
C)
Bauxite done
clear
D)
Felspar done
clear
View Solution play_arrow
-
question_answer54)
Aluminium is most abundant in earth crust yet it is obtained from bauxite because [CPMT 1997]
A)
Bauxite is available in larger quantity done
clear
B)
Of easy extraction of aluminium from it done
clear
C)
Bauxite contains maximum aluminium done
clear
D)
Bauxite is less impure done
clear
View Solution play_arrow
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question_answer55)
An ore of potassium is [JIPMER 2001]
A)
Bauxite done
clear
B)
Solomite done
clear
C)
Carnallite done
clear
D)
Cryolite done
clear
View Solution play_arrow
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question_answer56)
The molecular formula of cryolite is [AFMC 1999; MP PET 2002]
A)
\[F{{e}_{3}}{{O}_{4}}\] done
clear
B)
\[N{{a}_{3}}Al{{F}_{6}}\] done
clear
C)
\[N{{a}_{2}}A{{l}_{2}}{{O}_{3}}\] done
clear
D)
All of these done
clear
View Solution play_arrow
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question_answer57)
All ores are minerals, while all minerals are not ores because [Orissa JEE 2002]
A)
The metal can?t be extracted economically from all the minerals done
clear
B)
Minerals are complex compounds done
clear
C)
The minerals are obtained from mines done
clear
D)
All of these are correct done
clear
View Solution play_arrow
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question_answer58)
Corundum is an ore of [Kerala (Med.) 2002]
A)
Copper done
clear
B)
Boron done
clear
C)
Aluminium done
clear
D)
Sodium done
clear
View Solution play_arrow
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question_answer59)
Which one of the following is correct [MP PET/PMT 2002]
A)
A mineral cannot be an ore done
clear
B)
An ore cannot be a mineral done
clear
C)
All minerals are ores done
clear
D)
All ores are minerals done
clear
View Solution play_arrow
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question_answer60)
Which ore contains both iron and copper? [IIT-JEE (Screening) 2005]
A)
Cuprite done
clear
B)
Chalcocite done
clear
C)
Chalcopyrite done
clear
D)
Malachite done
clear
View Solution play_arrow
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question_answer61)
Formula of Felspar is [MHCET 2004]
A)
\[{{K}_{2}}O.A{{l}_{2}}{{O}_{3}}.6Si{{O}_{2}}\] done
clear
B)
\[{{K}_{2}}{{O}_{3}}.A{{l}_{2}}{{O}_{3}}.6S{{i}_{2}}.{{O}_{2}}.2{{H}_{2}}O\] done
clear
C)
\[A{{l}_{2}}{{O}_{3}}.2Si{{O}_{2}}.2{{H}_{2}}O\] done
clear
D)
\[3MgO.4Si{{O}_{2}}.{{H}_{2}}O\] done
clear
View Solution play_arrow
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question_answer62)
Chile saltpetre is [MP PET 2004]
A)
\[NaN{{O}_{3}}\] done
clear
B)
\[KN{{O}_{3}}\] done
clear
C)
\[N{{a}_{2}}S{{O}_{4}}\] done
clear
D)
\[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] done
clear
View Solution play_arrow
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question_answer63)
Which of the following is not an ore of magnesium [CPMT 2004; DCE 2004]
A)
Magnesite done
clear
B)
Dolomite done
clear
C)
Gypsum done
clear
D)
Carnalite done
clear
View Solution play_arrow
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question_answer64)
Which of the following is not a mineral of iron? [Kerala PMT 2004]
A)
Magnetite done
clear
B)
Siderite done
clear
C)
Smithsonite done
clear
D)
Limonite done
clear
E)
Haematite done
clear
View Solution play_arrow
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question_answer65)
The ore carnalite is represented by structure: [EAMCET 1987; MP PET 1986, 04; AFMC 2000 Pb. PMT 2004]
A)
\[N{{a}_{2}}A{{l}_{2}}{{O}_{3}}\] done
clear
B)
\[N{{a}_{3}}Al{{F}_{6}}\] done
clear
C)
\[KCl.MgC{{l}_{2}}6{{H}_{2}}O\] done
clear
D)
\[F{{e}_{3}}{{O}_{4}}\] done
clear
View Solution play_arrow
-
question_answer66)
Which of the following metal is sometimes found native in nature [CPMT 1973, 75; MP PET 1999]
A)
\[Al\] done
clear
B)
\[Cu\] done
clear
C)
\[Fe\] done
clear
D)
\[Mg\] done
clear
View Solution play_arrow
-
question_answer67)
The most abundant metal in the earth crust is [BHU 1979, 81; MP PMT 1997; CPMT 1988, 2001; CBSE PMT 2000]
A)
\[Na\] done
clear
B)
\[Mg\] done
clear
C)
\[Al\] done
clear
D)
\[Fe\] done
clear
View Solution play_arrow
-
question_answer68)
Indicate the mineral from which copper is manufactured [NCERT 1973]
A)
Galena done
clear
B)
Cuprite done
clear
C)
Sphalerite done
clear
D)
Chalcopyrite done
clear
View Solution play_arrow
-
question_answer69)
The principal ores of silver are argentite, horn silver and pyrargyrite. Their formula respectively are
A)
\[A{{g}_{2}}S,\,AgCl\] and \[AgSb{{S}_{2}}\] done
clear
B)
\[AgCl,\,AgSb{{S}_{2}}\] and \[A{{g}_{2}}S\] done
clear
C)
\[AgSb{{S}_{2}},\,A{{g}_{2}}S\] and \[AgCl\] done
clear
D)
\[AgCl,\,A{{g}_{2}}S\] and \[AgSb{{S}_{2}}\] done
clear
View Solution play_arrow
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question_answer70)
The most important ore of tin is [AFMC 2005]
A)
Cassiterite done
clear
B)
Cryolite done
clear
C)
Cerussite done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer71)
Important ore of Mg is [BCECE 2005]
A)
Gypsum done
clear
B)
Carnalite done
clear
C)
Magnatide done
clear
D)
Carnolite done
clear
View Solution play_arrow
-
question_answer72)
Which of the following is a carbonate ore [AIIMS 2005]
A)
Pyrolusite done
clear
B)
Malachite done
clear
C)
Diaspore done
clear
D)
Cassiterite done
clear
View Solution play_arrow