MCQOPTIONS
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MCQOPTIONS
This section includes 11242 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
| 3001. |
The principal ores of silver are argentite, horn silver and pyrargyrite. Their formula respectively are |
| A. | \[A{{g}_{2}}S,\,AgCl\] and \[AgSb{{S}_{2}}\] |
| B. | \[AgCl,\,AgSb{{S}_{2}}\] and \[A{{g}_{2}}S\] |
| C. | \[AgSb{{S}_{2}},\,A{{g}_{2}}S\] and \[AgCl\] |
| D. | \[AgCl,\,A{{g}_{2}}S\] and \[AgSb{{S}_{2}}\] |
| Answer» B. \[AgCl,\,AgSb{{S}_{2}}\] and \[A{{g}_{2}}S\] | |
| 3002. |
Which of the following is a carbonate ore [AIIMS 2005] |
| A. | Pyrolusite |
| B. | Malachite |
| C. | Diaspore |
| D. | Cassiterite |
| Answer» C. Diaspore | |
| 3003. |
Important ore of Mg is [BCECE 2005] |
| A. | Gypsum |
| B. | Carnalite |
| C. | Magnatide |
| D. | Carnolite |
| Answer» C. Magnatide | |
| 3004. |
A mineral is called an ore if [MP PMT 1990] |
| A. | Metal present in mineral is precious |
| B. | Metal can be extracted from it |
| C. | Metal can be extracted profitably from it |
| D. | Metal cannot be extracted from it |
| Answer» D. Metal cannot be extracted from it | |
| 3005. |
Indicate the mineral from which copper is manufactured [NCERT 1973] |
| A. | Galena |
| B. | Cuprite |
| C. | Sphalerite |
| D. | Chalcopyrite |
| Answer» E. | |
| 3006. |
Which of the following metal is sometimes found native in nature [CPMT 1973, 75; MP PET 1999] |
| A. | \[Al\] |
| B. | \[Cu\] |
| C. | \[Fe\] |
| D. | \[Mg\] |
| Answer» C. \[Fe\] | |
| 3007. |
The ore carnalite is represented by structure: [EAMCET 1987; MP PET 1986, 04; AFMC 2000 Pb. PMT 2004] |
| A. | \[N{{a}_{2}}A{{l}_{2}}{{O}_{3}}\] |
| B. | \[N{{a}_{3}}Al{{F}_{6}}\] |
| C. | \[KCl.MgC{{l}_{2}}6{{H}_{2}}O\] |
| D. | \[F{{e}_{3}}{{O}_{4}}\] |
| Answer» D. \[F{{e}_{3}}{{O}_{4}}\] | |
| 3008. |
Which of the following is not a mineral of iron? [Kerala PMT 2004] |
| A. | Magnetite |
| B. | Siderite |
| C. | Smithsonite |
| D. | Limonite |
| E. | Haematite |
| Answer» D. Limonite | |
| 3009. |
Which of the following is not an ore of magnesium [CPMT 2004; DCE 2004] |
| A. | Magnesite |
| B. | Dolomite |
| C. | Gypsum |
| D. | Carnalite |
| Answer» D. Carnalite | |
| 3010. |
Formula of Felspar is [MHCET 2004] |
| A. | \[{{K}_{2}}O.A{{l}_{2}}{{O}_{3}}.6Si{{O}_{2}}\] |
| B. | \[{{K}_{2}}{{O}_{3}}.A{{l}_{2}}{{O}_{3}}.6S{{i}_{2}}.{{O}_{2}}.2{{H}_{2}}O\] |
| C. | \[A{{l}_{2}}{{O}_{3}}.2Si{{O}_{2}}.2{{H}_{2}}O\] |
| D. | \[3MgO.4Si{{O}_{2}}.{{H}_{2}}O\] |
| Answer» B. \[{{K}_{2}}{{O}_{3}}.A{{l}_{2}}{{O}_{3}}.6S{{i}_{2}}.{{O}_{2}}.2{{H}_{2}}O\] | |
| 3011. |
Which ore contains both iron and copper? [IIT-JEE (Screening) 2005] |
| A. | Cuprite |
| B. | Chalcocite |
| C. | Chalcopyrite |
| D. | Malachite |
| Answer» D. Malachite | |
| 3012. |
Which of ore is metalloid [MP PMT 1987] |
| A. | \[As\] |
| B. | \[Na\] |
| C. | \[Au\] |
| D. | \[Fe\] |
| Answer» B. \[Na\] | |
| 3013. |
Corundum is an ore of [Kerala (Med.) 2002] |
| A. | Copper |
| B. | Boron |
| C. | Aluminium |
| D. | Sodium |
| Answer» D. Sodium | |
| 3014. |
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 |
| B. | Minerals are complex compounds |
| C. | The minerals are obtained from mines |
| D. | All of these are correct |
| Answer» B. Minerals are complex compounds | |
| 3015. |
An ore of potassium is [JIPMER 2001] |
| A. | Bauxite |
| B. | Solomite |
| C. | Carnallite |
| D. | Cryolite |
| Answer» D. Cryolite | |
| 3016. |
Aluminium is most abundant in earth crust yet it is obtained from bauxite because [CPMT 1997] |
| A. | Bauxite is available in larger quantity |
| B. | Of easy extraction of aluminium from it |
| C. | Bauxite contains maximum aluminium |
| D. | Bauxite is less impure |
| Answer» B. Of easy extraction of aluminium from it | |
| 3017. |
Which one of the following ores is a chloride [EAMCET 1997; CPMT 2001] |
| A. | Horn silver |
| B. | Zincite |
| C. | Bauxite |
| D. | Felspar |
| Answer» B. Zincite | |
| 3018. |
Among the following statements, the incorrect one is [IIT 1997] |
| A. | Calamine and siderite are carbonates |
| B. | Argentite and cuprite are oxides |
| C. | Zinc blende and pyrites are sulphides |
| D. | Malachite and azurite are ores of copper |
| Answer» C. Zinc blende and pyrites are sulphides | |
| 3019. |
Cassiterite is an ore of [CBSE PMT 1999; DPMT 1996] |
| A. | \[Mn\] |
| B. | \[Ni\] |
| C. | \[Sb\] |
| D. | \[Sn\] |
| Answer» E. | |
| 3020. |
Ore pitch blende is main source of [DPMT 1985; RPET 1999] |
| A. | \[Ra\] |
| B. | \[Ce\] |
| C. | \[Th\] |
| D. | \[Mg\] |
| Answer» B. \[Ce\] | |
| 3021. |
Cryolite is an ore of [MP PMT 1996; BHU 2002; DPMT 1996] |
| A. | Iron |
| B. | Silver |
| C. | Zinc |
| D. | Aluminium |
| Answer» E. | |
| 3022. |
An example of an oxide ore is [MP PET 1996] |
| A. | Bauxite |
| B. | Malachite |
| C. | Zinc blende |
| D. | Felspar |
| Answer» B. Malachite | |
| 3023. |
Galena is |
| A. | \[PbO\] |
| B. | \[PbC{{O}_{3}}\] |
| C. | \[PbS\] |
| D. | \[PbC{{l}_{2}}\] |
| Answer» D. \[PbC{{l}_{2}}\] | |
| 3024. |
Which of the following is not an ore of lead [MP PMT 1993] |
| A. | Galena |
| B. | Anglesite |
| C. | Calamine |
| D. | Cerrusite |
| Answer» D. Cerrusite | |
| 3025. |
Commercially important ore of lead from which it is extracted is [DPMT 1982, 96; MP PMT 2000] |
| A. | Siderite |
| B. | Haematite |
| C. | Galena |
| D. | None of these |
| Answer» D. None of these | |
| 3026. |
Which one of the following is an ore of silver [CPMT 1983; MP PET 1989; CBSE PMT 1993] |
| A. | Argentite |
| B. | Stibnite |
| C. | Haematite |
| D. | Bauxite |
| Answer» B. Stibnite | |
| 3027. |
Calamine is [BHU 1980, 85; CPMT 1990; MNR 1995; UPSEAT 1999] |
| A. | \[ZnS{{O}_{4}}\] |
| B. | \[ZnO\] |
| C. | \[Zn{{(N{{O}_{3}})}_{2}}\] |
| D. | \[ZnC{{O}_{3}}\] |
| Answer» E. | |
| 3028. |
Which of the following ore is called malachite [CPMT 1989, 93] |
| A. | \[C{{u}_{2}}S\] |
| B. | \[CuC{{O}_{3}}.Cu{{(OH)}_{2}}\] |
| C. | \[C{{u}_{2}}O\] |
| D. | \[CuC{{O}_{3}}\] |
| Answer» C. \[C{{u}_{2}}O\] | |
| 3029. |
Copper can be extracted from [NCERT 1973; IIT 1978; J & K 2005] |
| A. | Kupfernickel |
| B. | Dolomite |
| C. | Galena |
| D. | Malachite |
| Answer» E. | |
| 3030. |
Which metal is not silvery white |
| A. | \[Ni\] |
| B. | \[Cu\] |
| C. | \[Na\] |
| D. | \[Sn\] |
| Answer» C. \[Na\] | |
| 3031. |
Azurite is an ore of |
| A. | \[Ag\] |
| B. | \[Cu\] |
| C. | \[Pt\] |
| D. | \[Au\] |
| Answer» C. \[Pt\] | |
| 3032. |
Which of the following ores does not represent the ore of iron [CPMT 1989; AIIMS 2002] |
| A. | Haematite |
| B. | Magnetite |
| C. | Cassiterite |
| D. | Limonite |
| Answer» D. Limonite | |
| 3033. |
Which of the following is ferrous alloy [DPMT 1982, 84; CPMT 1989] |
| A. | Invar |
| B. | Solder |
| C. | Magnalium |
| D. | Type metal |
| Answer» B. Solder | |
| 3034. |
Which ore is used for the manufacture of iron [CPMT 1973, 79; RPET 2000] |
| A. | Cryolite |
| B. | Bauxite |
| C. | Haematite |
| D. | Chalcopyrites |
| Answer» D. Chalcopyrites | |
| 3035. |
Formula of magnetite is [CPMT 1991] |
| A. | \[F{{e}_{2}}{{O}_{3}}\] |
| B. | \[Fe{{S}_{2}}\] |
| C. | \[FeC{{O}_{3}}\] |
| D. | \[F{{e}_{3}}{{O}_{4}}\] |
| Answer» E. | |
| 3036. |
An important oxide ore of iron is [MP PET/PMT 1998; MP PET 1990; MP PMT 1994, 96] |
| A. | Haematite |
| B. | Siderite |
| C. | Pyrites |
| D. | Malachite |
| Answer» B. Siderite | |
| 3037. |
Titanium containing mineral found in our country is [NCERT 1984; RPET 1999] |
| A. | Bauxite |
| B. | Dolomite |
| C. | Chalcopyrites |
| D. | Elmanite |
| Answer» E. | |
| 3038. |
Which of the following mineral does not contain \[Al\] [IIT (Screening) 1992] |
| A. | Cryolite |
| B. | Mica |
| C. | Feldspar |
| D. | Fluorspar |
| Answer» E. | |
| 3039. |
Which is not a mineral of aluminium [BHU 1974, 79; MNR 1984; DPMT 2002] |
| A. | Anhydrite |
| B. | Bauxite |
| C. | Corundum |
| D. | Diaspore |
| Answer» B. Bauxite | |
| 3040. |
Main ore of aluminium is [CPMT 1989, 91, 2001; RPMT 1997; RPET 1999] [CPMT 2002, MP PMT 1999] |
| A. | Bauxite |
| B. | Corundum |
| C. | Cryolite |
| D. | Magnetite |
| Answer» B. Corundum | |
| 3041. |
Composition of bauxite is |
| A. | \[A{{l}_{2}}{{O}_{3}}\] |
| B. | \[A{{l}_{2}}{{O}_{3}}.\,{{H}_{2}}O\] |
| C. | \[A{{l}_{2}}{{O}_{3}}.\,2{{H}_{2}}O\] |
| D. | \[A{{l}_{2}}{{O}_{3}}.\,3{{H}_{2}}O\] |
| Answer» D. \[A{{l}_{2}}{{O}_{3}}.\,3{{H}_{2}}O\] | |
| 3042. |
Bauxite is an oxide ore of [BHU 1979; AFMC 1980; Kurukshetra CEE 1998; RPET 1999; CPMT 1976, 2001, 02] |
| A. | Barium |
| B. | Boron |
| C. | Bismuth |
| D. | Aluminium |
| Answer» E. | |
| 3043. |
Which of the following ore is used for industrial extraction of aluminium in India [MP PET 1989] |
| A. | Corundum |
| B. | Keolin |
| C. | Cryolite |
| D. | Bauxite |
| Answer» E. | |
| 3044. |
Which of the following metal is not found in free state |
| A. | \[Na\] |
| B. | \[Au\] |
| C. | \[Ag\] |
| D. | \[Pb\] |
| Answer» B. \[Au\] | |
| 3045. |
?Chile saltpetre? is an ore of [CPMT 1982] |
| A. | Iodine |
| B. | Sodium |
| C. | Bromine |
| D. | Magnesium |
| Answer» C. Bromine | |
| 3046. |
Naturally occurring substances from which a metal can be profitably (or economically) extracted are called [CPMT 1982; MP PET 1996] |
| A. | Minerals |
| B. | Ores |
| C. | Gangue |
| D. | Salts |
| Answer» C. Gangue | |
| 3047. |
Which of the following is not an ore [IIT 1982] |
| A. | Bauxite |
| B. | Malachite |
| C. | Zinc blende |
| D. | Pig iron |
| Answer» E. | |
| 3048. |
An example of halide ore is [MP PMT 1993] |
| A. | Galena |
| B. | Bauxite |
| C. | Cinnabar |
| D. | Cryolite |
| Answer» E. | |
| 3049. |
Which of the following minerals is not an ore of aluminum |
| A. | Bauxite |
| B. | Gypsum |
| C. | Cryolite |
| D. | Corundum |
| Answer» C. Cryolite | |
| 3050. |
What is believed to be the second most common element in the universe [MP PET 2000] |
| A. | Helium |
| B. | Hydrogen |
| C. | Nitrogen |
| D. | Silicon |
| Answer» E. | |