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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.
| 3151. |
In which of the following complexes oxidation state of metal is zero [MP PET 1997] |
| A. | \[\left[ Pt{{\left( N{{H}_{3}} \right)}_{2}}C{{l}_{2}} \right]\] |
| B. | \[\left[ Cr{{\left( CO \right)}_{6}} \right]\] |
| C. | \[\left[ Cr{{\left( N{{H}_{3}} \right)}_{3}}C{{l}_{3}} \right]\] |
| D. | \[\left[ Cr{{\left( en \right)}_{2}}C{{l}_{2}} \right]\] |
| Answer» C. \[\left[ Cr{{\left( N{{H}_{3}} \right)}_{3}}C{{l}_{3}} \right]\] | |
| 3152. |
The IUPAC name of compound \[N{{a}_{3}}\left[ Co{{(ONO)}_{6}} \right]\] will be [MP PMT 2000] |
| A. | Hexanitritocobalt (III) sodium |
| B. | Sodium cobalt nitrite |
| C. | Sodium hexanitrocobaltate (III) |
| D. | Sodium hexanitritocobaltate (III) |
| Answer» E. | |
| 3153. |
The correct nomenclature for \[F{{e}_{4}}{{[Fe{{(CN)}_{6}}]}_{3}}\] is [MP PMT 1994] |
| A. | Ferroso-ferric cyanide |
| B. | Ferric-ferrous hexacyanate |
| C. | Iron (III) hexacyanoferrate (II) |
| D. | Hexacynoferrate (III-II) |
| Answer» D. Hexacynoferrate (III-II) | |
| 3154. |
The IUPAC name of \[\left[ Ni{{(CO)}_{4}} \right]\] is [RPET 1999] |
| A. | Tetra carbonyl nickel (II) |
| B. | Tetra carbonyl nickel (0) |
| C. | Tetra carbonyl nickelate (II) |
| D. | Tetra carbonyl nickelate (0) |
| Answer» C. Tetra carbonyl nickelate (II) | |
| 3155. |
The IUPAC name of \[{{K}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\] is [CBSE PMT 1990; MP PET 1992; MP PMT 1995, 97; Kurukshetra CET 2002] |
| A. | Potassium hexacyanoferrate (II) |
| B. | Potassium ferrocyanide |
| C. | Tetrapotassium hexacyanoferrate (II) |
| D. | Tetrapotassium ferroushexacyanide (II) |
| Answer» B. Potassium ferrocyanide | |
| 3156. |
The oxidation number of chromium in sodium tetrafluoro oxochromate complex is |
| A. | II |
| B. | IV |
| C. | VI |
| D. | III |
| Answer» C. VI | |
| 3157. |
The IUPAC name of \[\left[ Co{{\left( N{{H}_{3}} \right)}_{3}}{{(N{{O}_{2}})}_{3}} \right]\] is |
| A. | Trinitrotriammine cobalt (III) |
| B. | Trinitrotriammine cobalt (II) |
| C. | Trinitrotriammine cobalt (III) ion |
| D. | Trinitritriammine cobaltate (III) |
| Answer» B. Trinitrotriammine cobalt (II) | |
| 3158. |
How many ions are produced in aqueous solution of \[[Co{{({{H}_{2}}O)}_{6}}]\,C{{l}_{2}}\] [RPMT 2002] |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» C. 4 | |
| 3159. |
Argon was discovered by [CPMT 1991] |
| A. | Rayleigh |
| B. | Frakland and Lockyer |
| C. | Jansen |
| D. | Ramsay |
| Answer» E. | |
| 3160. |
Every inert gas atom |
| A. | Has a saturated outermost shell |
| B. | Has one electron in outermost shell |
| C. | Has eight electrons in outermost shell |
| D. | Has two electrons in outermost shell |
| Answer» B. Has one electron in outermost shell | |
| 3161. |
The charcoal maintained at \[{{100}^{o}}C\] absorbs |
| A. | \[Ne\] and \[Kr\] |
| B. | \[He\] and \[Ar\] |
| C. | \[Ar,\] \[Kr,\] \[Xe\] |
| D. | \[He\] and \[Ne\] |
| Answer» D. \[He\] and \[Ne\] | |
| 3162. |
Which of the following is planar [J & K 2005] |
| A. | \[Xe{{F}_{2}}\] |
| B. | \[Xe{{O}_{3}}F\] |
| C. | \[Xe{{O}_{2}}{{F}_{2}}\] |
| D. | \[Xe{{F}_{4}}\] |
| Answer» E. | |
| 3163. |
The inert gases are [CPMT 1984] |
| A. | Polyatomic |
| B. | Triatomic |
| C. | Diatomic |
| D. | Monoatomic |
| Answer» E. | |
| 3164. |
Which of the following is most polarised [DPMT 2005] |
| A. | \[Kr\] |
| B. | \[He\] |
| C. | \[Ar\] |
| D. | \[Xe\] |
| Answer» E. | |
| 3165. |
Which of the following is an inert gas [AFMC 2005] |
| A. | \[{{H}_{2}}\] |
| B. | \[{{O}_{2}}\] |
| C. | \[{{N}_{2}}\] |
| D. | Argon |
| Answer» E. | |
| 3166. |
Which inert gas having highest boiling point [BCECE 2005] |
| A. | Xe |
| B. | Ar |
| C. | Kr |
| D. | He |
| Answer» B. Ar | |
| 3167. |
Which one of the following statements regarding helium is incorrect [AIEEE 2004] |
| A. | It is used to produce and sustain powerful superconducting magnets |
| B. | It is used as a cryogenic agent for carrying out experiments at low temperatures |
| C. | It is used to fill gas balloons instead of hydrogen because it is lighter and non-inflammable |
| D. | It is used in gas-cooled nuclear reactors |
| Answer» D. It is used in gas-cooled nuclear reactors | |
| 3168. |
Which of the following inert gas liquifies easily [Pb. CET 2002] |
| A. | Kr |
| B. | He |
| C. | Ne |
| D. | Ar |
| Answer» B. He | |
| 3169. |
Which of the following gas is/are called rare gas [CPMT 2000; Pb. CET 2002] |
| A. | Ne |
| B. | He |
| C. | Kr |
| D. | All of these |
| Answer» E. | |
| 3170. |
The last member of inert gas elements is [MP PMT 1999] |
| A. | Helium |
| B. | Neon |
| C. | Argon |
| D. | Radon |
| Answer» E. | |
| 3171. |
Who among the following first prepared a stable compound of noble gas [MP PET 1999] |
| A. | Rutherford |
| B. | Rayleigh |
| C. | Ramsay |
| D. | Neil Bartlett |
| Answer» E. | |
| 3172. |
Among the following molecule (i) \[Xe{{O}_{3}}\] (ii) \[XeO{{F}_{4}}\] (iii) \[Xe{{F}_{6}}\] Those having same number of lone pairs on Xe are [AIIMS 2005] |
| A. | (i) and (ii) only |
| B. | (i) and (iii) only |
| C. | (ii) and (iii) only |
| D. | (i),(ii) and (iii) |
| Answer» E. | |
| 3173. |
Which of the following are formed by Xenon [Roorkee 2000] |
| A. | \[Xe{{F}_{3}}\] |
| B. | \[Xe{{F}_{4}}\] |
| C. | \[Xe{{F}_{5}}\] |
| D. | \[Xe{{F}_{6}}\] |
| Answer» C. \[Xe{{F}_{5}}\] | |
| 3174. |
Which element out of \[He,\] \[Ar,\] \[Kr,\] and \[Xe\] forms least number of compounds [MP PMT 1995] |
| A. | \[He\] |
| B. | \[Ar\] |
| C. | \[Kr\] |
| D. | \[Xe\] |
| Answer» B. \[Ar\] | |
| 3175. |
Which of the following has \[s{{p}^{3}}\] hybridisation [DCE 2001] |
| A. | \[Xe{{O}_{3}}\] |
| B. | \[BC{{l}_{3}}\] |
| C. | \[Xe{{F}_{4}}\] |
| D. | \[BB{{r}_{3}}\] |
| Answer» B. \[BC{{l}_{3}}\] | |
| 3176. |
Fluorine forms chemical compounds with [MP PMT 1994] |
| A. | \[He\] |
| B. | \[Ne\] |
| C. | \[Ar\] |
| D. | \[Xe\] |
| Answer» E. | |
| 3177. |
Which of the following is not obtained by direct reaction of constituent elements [MP PET 1994] |
| A. | \[Xe{{F}_{2}}\] |
| B. | \[Xe{{F}_{4}}\] |
| C. | \[Xe{{O}_{3}}\] |
| D. | \[Xe{{F}_{6}}\] |
| Answer» D. \[Xe{{F}_{6}}\] | |
| 3178. |
The low chemical reactivity of the rare gases can be attributed to their [Pune CET 1998] |
| A. | Being non-metals |
| B. | Having high ionization energies |
| C. | Being gases |
| D. | Found in nature in small quantities |
| Answer» C. Being gases | |
| 3179. |
Which of the following noble gas does not have an octet of electrons in its outermost shell [MP PET 1996] |
| A. | Neon |
| B. | Radon |
| C. | Argon |
| D. | Helium |
| Answer» E. | |
| 3180. |
The valency of inert gases is |
| A. | 5 |
| B. | 1 |
| C. | 0 |
| D. | None of these |
| Answer» D. None of these | |
| 3181. |
Which noble gas is most soluble in water [CPMT 2002] |
| A. | He |
| B. | Ar |
| C. | Ne |
| D. | Xe |
| Answer» E. | |
| 3182. |
Noble gases are group of elements which exhibit very [Kerala (Med.) 2002] |
| A. | High chemical activity |
| B. | Low chemical activity |
| C. | Minimum electronegativity |
| D. | Much paramagnetic properties |
| Answer» C. Minimum electronegativity | |
| 3183. |
In \[Xe{{F}_{2}},\,Xe{{F}_{4}},\,\]\[Xe{{F}_{6}}\] the number of lone pairs on Xe is respectively [AIEEE 2002] |
| A. | 2, 3, 1 |
| B. | 1, 2, 3 |
| C. | 4, 1, 2 |
| D. | 3, 2, 1 |
| Answer» E. | |
| 3184. |
The correct order of solubility in water for \[He,\,Ne,\,Ar,\,Kr,\,Xe,\,\]is [AIIMS 2002] |
| A. | \[He>Ne>Ar>Kr>Xe\] |
| B. | \[Ne>Ar>Kr>He>Xe\] |
| C. | \[Xe>Kr>Ar>Ne>He\] |
| D. | \[Ar>Ne>He>Kr>Xe\] |
| Answer» D. \[Ar>Ne>He>Kr>Xe\] | |
| 3185. |
\[Xe{{F}_{6}}\] on hydrolysis gives [MP PET 2000; Pb. PMT 2000; DCE 2002] |
| A. | \[Xe{{O}_{3}}\] |
| B. | \[XeO\] |
| C. | \[Xe{{O}_{2}}\] |
| D. | \[Xe\] |
| Answer» B. \[XeO\] | |
| 3186. |
Which of the following represent nobel gas configuration [BHU 1995] |
| A. | \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},\] \[4{{s}^{2}}4{{p}^{6}}4{{d}^{10}},\] \[5{{s}^{2}}5{{p}^{6}}\] |
| B. | \[1{{s}^{2}},\]\[2{{s}^{2}}2{{p}^{6}},\]\[3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},\] \[4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}4{{f}^{14}}\], \[5{{s}^{2}}5{{p}^{6}}5{{d}^{1}},6{{s}^{2}}\] |
| C. | \[1{{s}^{2}},\] \[2{{s}^{2}}s{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},\] \[4{{s}^{2}}4{{p}^{6}}4{{d}^{10}},\] \[5{{s}^{2}}5{{p}^{6}}5{{d}^{1}},\] \[6{{s}^{2}}\] |
| D. | \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},\] \[4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}\] |
| Answer» B. \[1{{s}^{2}},\]\[2{{s}^{2}}2{{p}^{6}},\]\[3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},\] \[4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}4{{f}^{14}}\], \[5{{s}^{2}}5{{p}^{6}}5{{d}^{1}},6{{s}^{2}}\] | |
| 3187. |
Which of the following is the correct sequence of the noble gases in their group in the periodic table [Manipal MEE 1995] |
| A. | Ar, He, Kr, Ne, Rn, Xe |
| B. | He, Ar, Ne, Kr, Xe, Rn |
| C. | He, Ne, Ar, Kr, Xe, Rn |
| D. | He, Ne, Kr, Ar, Xe, Rn |
| Answer» D. He, Ne, Kr, Ar, Xe, Rn | |
| 3188. |
Which of the following has zero valency [DPMT 1985] |
| A. | Sodium |
| B. | Beryllium |
| C. | Aluminium |
| D. | Krypton |
| Answer» E. | |
| 3189. |
Which one of the following configuration represents a noble gas [CPMT 1976, 83, 89; BHU 1982; Pb. CET 2000 NCERT 1979; IIT Screening 1993; EAMCET 1993] |
| A. | \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}\] |
| B. | \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{1}}\] |
| C. | \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{6}}\] |
| D. | \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}},\] \[4{{s}^{2}}\] |
| Answer» D. \[1{{s}^{2}},\] \[2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}},\] \[4{{s}^{2}}\] | |
| 3190. |
Which is the lightest gas |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Helium |
| D. | Nitrogen |
| Answer» B. Oxygen | |
| 3191. |
Which of the following statements is not correct for a noble gas [MP PET 1993] |
| A. | \[Ar\] is used in electric bulbs |
| B. | \[Kr\] is obtained during radioactive disintegration |
| C. | Half life of \[Rn\] is only 3.8 days |
| D. | \[He\] is used in producing very low temperature |
| Answer» C. Half life of \[Rn\] is only 3.8 days | |
| 3192. |
Helium is added to the oxygen supply used by deep sea divers because [MP PMT 1993; MP PET 1997] |
| A. | It is less soluble in blood than nitrogen at high pressure |
| B. | It is lighter than nitrogen |
| C. | It is readily miscible with oxygen |
| D. | It is less poisonous than nitrogen |
| Answer» B. It is lighter than nitrogen | |
| 3193. |
Which one of the following noble gases is not found in the atmosphere [MP PMT 1993] |
| A. | \[Rn\] |
| B. | \[Kr\] |
| C. | \[Ne\] |
| D. | \[Ar\] |
| Answer» B. \[Kr\] | |
| 3194. |
Which one of the following noble gases is the least polarizable [AIIMS 1983; MP PET 1999; Pb. PMT 2001; JIPMER (Med.) 2002] |
| A. | \[Xe\] |
| B. | \[Ar\] |
| C. | \[Ne\] |
| D. | \[He\] |
| Answer» E. | |
| 3195. |
In \[Xe{{F}_{2}}\] hybridisation of \[Xe\] is |
| A. | \[s{{p}^{2}}\] |
| B. | \[s{{p}^{3}}d\] |
| C. | \[s{{p}^{3}}\] |
| D. | \[s{{p}^{3}}{{d}^{2}}\] |
| Answer» C. \[s{{p}^{3}}\] | |
| 3196. |
\[Xe{{F}_{2}}\] molecule is |
| A. | Square planer |
| B. | Trigonal bipyramidal |
| C. | Trigonal planer |
| D. | Linear |
| Answer» E. | |
| 3197. |
Which of the following fluorides of Xenon is impossible [CPMT 1982; Kurukshetra CEE 1998;RPET 1999] |
| A. | \[Xe{{F}_{6}}\] |
| B. | \[Xe{{F}_{4}}\] |
| C. | \[Xe{{F}_{3}}\] |
| D. | \[Xe{{F}_{2}}\] |
| Answer» D. \[Xe{{F}_{2}}\] | |
| 3198. |
Monazite is source of |
| A. | \[He\] |
| B. | \[Kr\] |
| C. | \[Ar\] |
| D. | \[Ne\] |
| Answer» B. \[Kr\] | |
| 3199. |
Noble gases do not react with other elements because [CPMT 1981] |
| A. | They have completely paired up and stable electron shells |
| B. | The sizes of their atoms are very small |
| C. | Are not found in abundance |
| D. | Are monoatomic |
| Answer» B. The sizes of their atoms are very small | |
| 3200. |
Which mineral was used in isolation of radium [CPMT 1978, 81, 91] |
| A. | Lime stone |
| B. | Pitch blende |
| C. | Rutile |
| D. | Haematite |
| Answer» C. Rutile | |