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Published on: 28/05/2021
QB365 Provides the HOT Question Papers for Class 12 Chemistry, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams
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 Test1.
The percentage of \(\pi\)-character in the orbitals forming P-P bonds in P4 is
25
33
50
75
2.
Atoms in P4 molecule of white phosphorus are arranged regularly in the following way
at the corners of a cube
at the corners of an octahedron
at the corners of a tetrahedron
at the centre and corners of a tetrahedron
3.
[Fe(H2O)5NO]2+ is a complex formed during the brown ring test for NO\(\overset{-}{3}\) ion. In this complex,
there are three upaired electrons so that its magnetic moment is 3.87 B.M.
No transfers its electron to Fe2+ so that iron exists as Fe (I) and No as NO+
the colour is because of charge transfer
all of the above statements are correct
4.
Of the following acids, the one which has the capability to form complex compound and also possesses oxidising and reducing properties is
HNO3
HNO2
HCOOH
HCN
5.
Cold ferrous sulphate solution on absorption of NO develops brown colour due to the formation of
paramagnetic [Fe(H2O)5(NO)] SO4
diamagnetic [Fe(H2O)5(N3)] SO4
paramagnetic [Fe(H2O)5(NO3)] (SO4)2
diamagnetic [Fe(H2O)4(SO4)] NO3
1.
(d)
75
2.
(c)
at the corners of a tetrahedron
3.
(d)
all of the above statements are correct
4.
(b)
HNO2
5.
(a)
paramagnetic [Fe(H2O)5(NO)] SO4
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