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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.
| 4451. |
Which of the following complex will give white precipitate with \[BaC{{l}_{2}}\] \[(aq.)\] [JIPMER 1997] |
| A. | \[[Co{{(N{{H}_{3}})}_{4}}S{{O}_{4}}]N{{O}_{2}}\] |
| B. | \[[Cr{{\left( N{{H}_{3}} \right)}_{5}}S{{O}_{4}}]Cl\] |
| C. | \[[Cr{{(N{{H}_{3}})}_{5}}Cl]S{{O}_{4}}\] |
| D. | Both B and C |
| Answer» D. Both B and C | |
| 4452. |
The number of precipitable halide ions in the sample \[[Pt\left( N{{H}_{3}} \right)C{{l}_{2}}Br]Cl\] will be |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 1 |
| Answer» E. | |
| 4453. |
How many ions will be produced in solution from one molecule of chloropentammine cobalt (III) chloride |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 4454. |
Which one of the following will give a white precipitate with \[AgN{{O}_{3}}\] in aqueous mediun [MP PMT 1994] |
| A. | \[\left[ Co{{\left( N{{H}_{3}} \right)}_{5}}Cl \right]\,{{\left( N{{O}_{2}} \right)}_{2}}\] |
| B. | \[\left[ Pt{{\left( N{{H}_{3}} \right)}_{2}}C{{l}_{2}} \right]\] |
| C. | \[\left[ Pt(en)C{{l}_{2}} \right]\] |
| D. | \[\left[ Pt{{\left( N{{H}_{3}} \right)}_{4}} \right]\,C{{l}_{2}}\] |
| Answer» E. | |
| 4455. |
Which of the following will not give a precipitate with \[AgN{{O}_{3}}\] [MP PET 2003] |
| A. | \[\left[ Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}} \right]\] |
| B. | \[\left[ Co{{\left( N{{H}_{3}} \right)}_{4}}C{{l}_{2}} \right]Cl\] |
| C. | \[\left[ Co{{(N{{H}_{3}})}_{5}}Cl \right]C{{l}_{2}}\] |
| D. | \[\left[ Co{{\left( N{{H}_{3}} \right)}_{6}} \right]C{{l}_{3}}\] |
| Answer» B. \[\left[ Co{{\left( N{{H}_{3}} \right)}_{4}}C{{l}_{2}} \right]Cl\] | |
| 4456. |
How many ions are produced from \[[Co{{\left( N{{H}_{3}} \right)}_{6}}]C{{l}_{3}}\] in solution [RPET 1999] |
| A. | 6 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 4457. |
Which one of the following is expected to be a paramagnetic complex [MP PMT 1991, 2000] |
| A. | \[{{\left[ Ni{{\left( {{H}_{2}}O \right)}_{6}} \right]}^{2+}}\] |
| B. | \[\left[ Ni{{\left( CO \right)}_{4}} \right]\] |
| C. | \[{{\left[ Zn{{\left( N{{H}_{3}} \right)}_{4}} \right]}^{2+}}\] |
| D. | \[{{\left[ Co{{\left( N{{H}_{3}} \right)}_{6}} \right]}^{+3}}\] |
| Answer» B. \[\left[ Ni{{\left( CO \right)}_{4}} \right]\] | |
| 4458. |
Types of isomerism shown by [DCE 2002] \[[Cr{{(N{{H}_{3}})}_{5}}N{{O}_{2}}]C{{l}_{2}}\] is |
| A. | Optical |
| B. | Ionisation |
| C. | Geometrical |
| D. | Linkage |
| Answer» E. | |
| 4459. |
Change in composition of co-ordination sphere yields which types of isomers [DCE 2002] |
| A. | Optical |
| B. | Geometrical |
| C. | Ionisation |
| D. | None of these |
| Answer» D. None of these | |
| 4460. |
Which of the following coordiantion compounds would exhibit optical isomerism [CBSE PMT 2004] |
| A. | trans-dicyanobis (ethylenediamine) chromium (III) chloride |
| B. | tris-(ethylenediamine) cobalt (III) bromide |
| C. | pentaamminenitrocobalt (III) iodide |
| D. | diamminedichloroplatinum (II) |
| Answer» C. pentaamminenitrocobalt (III) iodide | |
| 4461. |
Which one has the highest paramagnetism [AMU 2001] |
| A. | \[Ni{{(CO)}_{4}}\] |
| B. | \[[Ni{{(N{{H}_{3}})}_{4}}]C{{l}_{2}}\] |
| C. | \[[Ni{{(N{{H}_{3}})}_{6}}]C{{l}_{2}}\] |
| D. | \[[Cu{{(N{{H}_{3}})}_{4}}]C{{l}_{2}}\] |
| Answer» E. | |
| 4462. |
Which of the following does not have optical isomer [AIIMS 2004] |
| A. | \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\] |
| B. | \[[Co{{(en)}_{3}}]C{{l}_{3}}\] |
| C. | \[[Co{{(en)}_{2}}C{{l}_{2}}]Cl\] |
| D. | \[[Co(en){{(N{{H}_{3}})}_{2}}C{{l}_{2}}]Cl\] |
| Answer» B. \[[Co{{(en)}_{3}}]C{{l}_{3}}\] | |
| 4463. |
Which of the following complex will show geometrical as well as optical isomerism (en = ethylene diamine) [KCET 1996] |
| A. | \[Pt{{\left( N{{H}_{3}} \right)}_{2}}C{{l}_{2}}\] |
| B. | \[\left[ Pt\left( N{{H}_{3}} \right)\,C{{l}_{4}} \right]\] |
| C. | \[{{\left[ Pt{{\left( en \right)}_{3}} \right]}^{4+}}\] |
| D. | \[\left[ Pt{{\left( en \right)}_{2}} \right]\,C{{l}_{2}}\] |
| Answer» E. | |
| 4464. |
\[\left[ Pt{{\left( N{{H}_{3}} \right)}_{4}}C{{l}_{2}} \right]B{{r}_{2}}\] and \[\left[ Pt{{(N{{H}_{3}})}_{4}}B{{r}_{2}} \right]C{{l}_{2}}\] are related to each other as [MP PET 1996; AFMC 2000; CBSE PMT 2001] |
| A. | Optical isomers |
| B. | Coordinate isomers |
| C. | Ionization isomers |
| D. | Linkage isomers |
| Answer» D. Linkage isomers | |
| 4465. |
If the magnetic moment of \[{{\left[ Ag{{\left( CN \right)}_{2}} \right]}^{-1}}\] is zero, then the number of unpaired electrons will be [MP PET 1995] |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | Zero |
| Answer» E. | |
| 4466. |
The number of unpaired electrons in \[Ni{{(CO)}_{4}}\] is [AIIMS 1997] |
| A. | Zero |
| B. | One |
| C. | Three |
| D. | Five |
| Answer» B. One | |
| 4467. |
The number of isomers possible for square planar complex \[{{K}_{2}}\left[ PdClB{{r}_{2}}(SCN) \right]\] is [MP PET 1994] |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 4468. |
The type of magnetism exhibited by \[{{\left[ Mn{{\left( {{H}_{2}}O \right)}_{6}} \right]}^{2+}}\] ion is [IIT 1994] |
| A. | Paramagnetism |
| B. | Diamagnetism |
| C. | Both A and B |
| D. | None of these |
| Answer» B. Diamagnetism | |
| 4469. |
Which of the following compounds is colourless [MP PET 1994] |
| A. | \[C{{u}_{2}}{{(C{{H}_{3}}COO)}_{4}}.2{{H}_{2}}O\] |
| B. | \[C{{u}_{2}}C{{l}_{2}}\] |
| C. | \[CuS{{O}_{4}}.5{{H}_{2}}O\] |
| D. | \[[Cu{{(N{{H}_{3}})}_{4}}]S{{O}_{4}}.4{{H}_{2}}O\] |
| Answer» C. \[CuS{{O}_{4}}.5{{H}_{2}}O\] | |
| 4470. |
Which would exhibit co-ordination isomerism |
| A. | \[\left[ Cr{{(N{{H}_{3}})}_{6}} \right]\,\left[ Co{{(CN)}_{6}} \right]\] |
| B. | \[\left[ Co{{(en)}_{2}}C{{l}_{2}} \right]\] |
| C. | \[\left[ Cr{{\left( N{{H}_{3}} \right)}_{6}} \right]C{{l}_{3}}\] |
| D. | \[{{\left[ Cr{{(en)}_{2}}C{{l}_{2}} \right]}^{+}}\] |
| Answer» B. \[\left[ Co{{(en)}_{2}}C{{l}_{2}} \right]\] | |
| 4471. |
Which one of the following shows maximum paramagnetic character [AIIMS 1998] |
| A. | \[{{\left[ Cr{{\left( {{H}_{2}}O \right)}_{6}} \right]}^{3+}}\] |
| B. | \[{{\left[ Fe{{(CN)}_{6}} \right]}^{4-}}\] |
| C. | \[{{\left[ Fe{{(CN)}_{6}} \right]}^{3-}}\] |
| D. | \[{{\left[ Cu{{({{H}_{2}}O)}_{6}} \right]}^{2+}}\] |
| Answer» B. \[{{\left[ Fe{{(CN)}_{6}} \right]}^{4-}}\] | |
| 4472. |
The complexes \[[Co{{(N{{H}_{3}})}_{6}}]\,[Cr{{({{C}_{2}}{{O}_{4}})}_{3}}]\] and \[[Cr{{(N{{H}_{3}})}_{6}}]\,\,[Co{{({{C}_{2}}{{O}_{4}})}_{3}}]\] [AMU 2002] |
| A. | Linkage isomerism |
| B. | Geometrical isomerism |
| C. | Coordination isomerism |
| D. | Ionisation isomerism |
| Answer» D. Ionisation isomerism | |
| 4473. |
Which of the following is paramagnetic [AFMC 1997] |
| A. | \[\left[ Ni{{\left( CO \right)}_{4}} \right]\]\[\] |
| B. | \[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\] |
| C. | \[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{2-}}\] |
| D. | \[{{\left[ NiC{{l}_{4}} \right]}^{2-}}\] |
| Answer» E. | |
| 4474. |
What is true for \[{{[Fe{{(CN)}_{6}}]}^{3-}}\] and \[{{[Fe{{F}_{6}}]}^{3-}}\] [RPET 1999] |
| A. | Both are paramagnetic |
| B. | Only \[{{[Fe{{(CN)}_{6}}]}^{3-}}\] is paramagnetic |
| C. | Only \[{{[Fe{{F}_{6}}]}^{3-}}\] is paramagnetic |
| D. | Both are diamagnetic |
| Answer» B. Only \[{{[Fe{{(CN)}_{6}}]}^{3-}}\] is paramagnetic | |
| 4475. |
Magnetic moment of \[{{[Cu{{(N{{H}_{3}})}_{4}}]}^{2+}}\]ion is [RPET 2003] |
| A. | 1.414 |
| B. | 1.73 |
| C. | 2.23 |
| D. | 2.38 |
| Answer» B. 1.73 | |
| 4476. |
Pick out from the following complex compounds, a poor electrolytic conductor in solution [MP PMT 1994] |
| A. | \[{{K}_{2}}\left[ PtC{{l}_{6}} \right]\] |
| B. | \[\left[ Co{{\left( N{{H}_{3}} \right)}_{3}}{{(N{{O}_{2}})}_{3}} \right]\] |
| C. | \[{{K}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\] |
| D. | \[\left[ Cu{{\left( N{{H}_{3}} \right)}_{4}} \right]S{{O}_{4}}\] |
| Answer» C. \[{{K}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\] | |
| 4477. |
The possible number of optical isomers in \[{{[Co{{(en)}_{2}}C{{l}_{2}}]}^{+}}\] are [MP PET 2003] |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» C. 4 | |
| 4478. |
Which of the following compounds exhibits linkage isomerism [MP PMT 2001] |
| A. | \[[Co{{(en)}_{3}}]C{{l}_{3}}\] |
| B. | \[[Co{{(N{{H}_{3}})}_{6}}[Cr{{(CN)}_{6}}]\] |
| C. | \[[Co{{(en)}_{2}}N{{O}_{2}}Cl]Br\] |
| D. | \[[Co{{(N{{H}_{3}})}_{5}}Cl]B{{r}_{2}}\] |
| Answer» D. \[[Co{{(N{{H}_{3}})}_{5}}Cl]B{{r}_{2}}\] | |
| 4479. |
The type of isomerism present in nitropentamine chromium (III) chloride is [AIEEE 2002] |
| A. | Optical |
| B. | Linkage |
| C. | Ionization |
| D. | Polymerisation |
| Answer» C. Ionization | |
| 4480. |
The pair of complex compounds \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{6}}C{{l}_{3}} \right]\] and \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{5}}Cl \right]C{{l}_{2}}{{H}_{2}}O\] are an example of [MP PMT 1997] |
| A. | Linkage isomerism |
| B. | Ionisation isomerism |
| C. | Coordination isomerism |
| D. | Hydrate isomerism |
| Answer» E. | |
| 4481. |
The number of unpaired electrons in the complex ion \[{{[Co{{F}_{6}}]}^{3-}}\] is (Atomic no. of \[Co=27)\] [CBSE PMT 2003] |
| A. | Zero |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 4482. |
The number of geometrical isomers of the complex \[\left[ Co{{(N{{O}_{2}})}_{2}}{{(N{{H}_{3}})}_{2}} \right]\] is [CBSE PMT 1997] |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 0 |
| Answer» B. 3 | |
| 4483. |
The number of geometrical isomers for \[\left[ Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}} \right]\] is [CBSE PMT 1995] |
| A. | Two |
| B. | One |
| C. | Three |
| D. | Four |
| Answer» B. One | |
| 4484. |
The compound which does not show paramagnetism is [IIT 1992] |
| A. | \[\left[ Cu{{\left( N{{H}_{3}} \right)}_{4}} \right]C{{l}_{_{2}}}\] |
| B. | \[\left[ Ag{{\left( N{{H}_{3}} \right)}_{2}} \right]Cl\] |
| C. | \[NO\] |
| D. | \[N{{O}_{2}}\] |
| Answer» C. \[NO\] | |
| 4485. |
\[{{\left[ Co{{\left( N{{H}_{3}} \right)}_{4}}C{{l}_{2}} \right]}^{+}}\] exhibits |
| A. | Geometrical isomerism |
| B. | Optical isomerism |
| C. | Bonding isomerism |
| D. | Ionisation isomerism |
| Answer» B. Optical isomerism | |
| 4486. |
Amongst \[Ni{{\left( CO \right)}_{4}},\] \[{{\left[ Ni{{(CN)}_{4}} \right]}^{2-}}\] and \[{{[NiC{{l}_{4}}]}^{2-}}\] [IIT 1991] |
| A. | \[Ni{{\left( CO \right)}_{4}}\] and \[{{\left[ NiC{{l}_{4}} \right]}^{2-}}\]are diamagnetic and \[{{[Ni{{(CN)}_{4}}]}^{2-}}\] is paramagnetic |
| B. | \[{{\left[ NiC{{l}_{4}} \right]}^{2-}}\] and \[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{2-}}\] are diamagnetic and \[Ni{{\left( CO \right)}_{4}}\] is paramagnetic |
| C. | \[Ni{{\left( CO \right)}_{4}}\] and \[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{2-}}\] are diamagnetic and \[{{\left[ NiC{{l}_{4}} \right]}^{2-}}\] is paramagnetic |
| D. | \[Ni{{\left( CO \right)}_{4}}\] is diamagnetic and \[{{\left[ NiC{{l}_{4}} \right]}^{2-}}\] and \[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{2-}}\] are paramagnetic |
| Answer» D. \[Ni{{\left( CO \right)}_{4}}\] is diamagnetic and \[{{\left[ NiC{{l}_{4}} \right]}^{2-}}\] and \[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{2-}}\] are paramagnetic | |
| 4487. |
Among the following ions which one has the highest paramagnetism [IIT 1993; UPSEAT 2002] |
| A. | \[{{\left[ Cr{{({{H}_{2}}O)}_{6}} \right]}^{3+}}\] |
| B. | \[{{\left[ Fe{{({{H}_{2}}O)}_{6}} \right]}^{2+}}\] |
| C. | \[{{\left[ Cu{{\left( {{H}_{2}}O \right)}_{6}} \right]}^{2+}}\] |
| D. | \[{{\left[ Zn{{\left( {{H}_{2}}O \right)}_{6}} \right]}^{2+}}\] |
| Answer» C. \[{{\left[ Cu{{\left( {{H}_{2}}O \right)}_{6}} \right]}^{2+}}\] | |
| 4488. |
Which of the following isomeric pairs shows ionization isomerism [MP PET 1993] |
| A. | \[\left[ Co{{\left( N{{H}_{3}} \right)}_{6}} \right]\,\left[ Cr{{\left( CN \right)}_{6}} \right]\] and \[\left[ Cr{{(N{{H}_{3}})}_{6}} \right]\,\left[ Co{{(CN)}_{6}} \right]\] |
| B. | \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{6}} \right]C{{l}_{3}}\] and \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{5}}Cl \right]C{{l}_{2}}.{{H}_{2}}O\] |
| C. | \[\left[ Pt{{\left( N{{H}_{3}} \right)}_{2}}C{{l}_{2}} \right]\] and \[\left[ Pt{{(N{{H}_{3}})}_{4}} \right]\,\left[ PtC{{l}_{4}} \right]\] |
| D. | \[\left[ Co{{(N{{H}_{3}})}_{5}}Br \right]S{{O}_{4}}\] and \[\left[ Co{{\left( N{{H}_{3}} \right)}_{5}}S{{O}_{4}} \right]Br\] |
| Answer» E. | |
| 4489. |
Which one of the following will not show geometrical isomerism [MP PMT 2002] |
| A. | \[[Cr{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl\] |
| B. | \[[Co{{(en)}_{2}}C{{l}_{2}}]Cl\] |
| C. | \[[Co{{(N{{H}_{3}})}_{5}}N{{O}_{2}}]C{{l}_{2}}\] |
| D. | \[[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]\] |
| Answer» D. \[[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]\] | |
| 4490. |
Which one of the following octahedral complexes will not show geometric isomerism (A and B are monodentate ligands) [CBSE PMT 2003] |
| A. | \[[M{{A}_{5}}B]\] |
| B. | \[[M{{A}_{2}}{{B}_{4}}]\] |
| C. | \[[M{{A}_{3}}{{B}_{3}}]\] |
| D. | \[[M{{A}_{4}}{{B}_{2}}]\] |
| Answer» B. \[[M{{A}_{2}}{{B}_{4}}]\] | |
| 4491. |
The correct order of ionisation energy for comparing carbon, nitrogen and oxygen atoms is [UPSEAT 2004] |
| A. | \[C>N>O\] |
| B. | \[C>N<O\] |
| C. | \[C<N>O\] |
| D. | \[C<N<O\] |
| Answer» D. \[C<N<O\] | |
| 4492. |
The first ionisation potential is maximum for [CPMT 2004] |
| A. | B |
| B. | N |
| C. | O |
| D. | Be |
| Answer» C. O | |
| 4493. |
The correct order of reactivity of halogens is [MHCET 2003] |
| A. | \[F>Cl>Br>I\] |
| B. | \[F<Cl>Br<I\] |
| C. | \[F<Cl<Br<I\] |
| D. | \[F<Cl<Br>I\] |
| Answer» B. \[F<Cl>Br<I\] | |
| 4494. |
Which one of the following sets of ions represents the collection of isoelectronic species [AIEEE 2004] |
| A. | \[{{K}^{+}},C{{l}^{-}},M{{g}^{2+}},S{{c}^{3+}}\] |
| B. | \[N{{a}^{+}},C{{a}^{2+}},S{{c}^{3+}},{{F}^{-}}\] |
| C. | \[{{K}^{+}},C{{a}^{2+}},S{{c}^{3+}},C{{l}^{-}}\] |
| D. | \[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}},Cl\] |
| Answer» D. \[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}},Cl\] | |
| 4495. |
Which of the following has the highest first ionisation energy [BHU 2004] |
| A. | Li |
| B. | Be |
| C. | B |
| D. | C |
| Answer» E. | |
| 4496. |
In a given shell, the order of screening effect is [Kerala PMT 2004] |
| A. | \[s>p>d>f\] |
| B. | \[f>d>p>s\] |
| C. | \[p<d<s<f\] |
| D. | \[d>f<s>p\] |
| E. | \[f>p>s>d\] |
| Answer» B. \[f>d>p>s\] | |
| 4497. |
Which among the following elements have lowest value of \[I{{E}_{1}}\] [CPMT 2004] |
| A. | Pb |
| B. | Sn |
| C. | Si |
| D. | C |
| Answer» C. Si | |
| 4498. |
Flourine is the best oxidising agent because it has [CPMT 2004] |
| A. | Highest electron affinity |
| B. | Highest \[E_{\text{red}}^{\text{0}}\] |
| C. | Highest \[E_{\text{oxid}}^{\text{0}}\] |
| D. | Lowest electron affinity |
| Answer» C. Highest \[E_{\text{oxid}}^{\text{0}}\] | |
| 4499. |
Which is correct about ionisation potential [MHCET 2003] |
| A. | It is independent of atomic radii |
| B. | It increases with increase in atomic radii |
| C. | It remains constant with increase in atomic radii |
| D. | It decreases with increase in atomic radii |
| Answer» E. | |
| 4500. |
Ionization potential is lowest for [CPMT 1989; MP PET 2001] |
| A. | Halogens |
| B. | Inert gases |
| C. | Alkaline earth metals |
| D. | Alkali metals |
| Answer» E. | |