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Published on: 24/05/2021
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Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
Take MCQ Chemistry Test

1.
Although +3 is the characteristic oxidation state for lanthanoids but cerium also shows +4 oxidation state because ......... .
it has variable ionisation enthalpy
it has a tendency to attain noble gas coniguration
it has a tendency to attain fo configuration
it resembles Pb4+
2.
Which of the following will not act as oxidising agents ?
CrO3
MoO3
WO3
\({ CrO }_{ 4 }^{ 2- }\)
3.
Transition elements form binary compounds with halogens. Which of the following elements will form MF3 type compounds ?
Cr
Co
Cu
Ni
4.
Which of the following ions show higher spin only magnetic moment value ?
Ti3+
Mn2+
Fe2+
Co3+
5.
Which of the following lanthanoids show +2 oxidation state besides the characteristic oxidation state +3 of lanthanoids?
Ce
Eu
Yb
Ho
1.
(c)
it has a tendency to attain fo configuration
2.
(c)
WO3
3.
(a)
Cr
4.
(c)
Fe2+
5.
(c)
Yb
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