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Published on: 24/05/2021
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Questions + Answers key
Take MCQ Chemistry Test
1.
Which of the following complexes are homoleptic ?
\([Co(NH_3)_6]^{3+}\)
\([Co(NH_3)_4Cl_2]^+\)
\([Ni(CN)_4]^{2-}\)
\([Ni(NH_3)_4Cl_2]\)
2.
An aqueous pink solution of cobalt(II) chloride changes to deep blue on addition of excess of HCl. This is because............... .
\([Co(H_2O)_6]^{2+}\) is transformed into \([CoCl_6]^{4-}\)
\([Co(H_2O)_6]^{2+}\) is transformed into \([CoCl_2]^{2-}\)
tetrahedral complexes have smaller crystal field splitting than octahedral complexes.
tetrahedral complexes have larger crystal field splitting than octahedral complex.
3.
Which of the following options are correct for \([Fe(CN)_6]^{3-}\) complex ?
d 2sp3 hybridisation
sp3d2 hybridisation
paramagnetic
diamagnetic
4.
Atomic number of Mn, Fe, Co and Ni are 25, 26, 27 and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons ?
\([MnCl_6]^{3-}\)
\([FeF_6]^{3-}\)
\([CoF_6]^{3-}\)
\([Ni(NH_3)_6]^{2+}\)
5.
Atomic number of Mn, Fe and Co are 25,26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic ?
\([Co(NH_3)_6]^{3+}\)
\([Mn(CN)_6]^{3-}\)
\([Fe(CN)_6]^{4-}\)
\([Fe(CN)_6]^{3-}\)
1.
(a)
\([Co(NH_3)_6]^{3+}\)
2.
(b)
\([Co(H_2O)_6]^{2+}\) is transformed into \([CoCl_2]^{2-}\)
3.
(a)
d 2sp3 hybridisation
4.
(a)
\([MnCl_6]^{3-}\)
5.
(a)
\([Co(NH_3)_6]^{3+}\)
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