12th Chemistry - Book Back & Creative One Mark Questions - Free Online Test - English Medium - Unit - 5 : Co

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Paramagnetic moment is expressed in

ergs
Debye unit
BM
K joules

Optical isomerism
Coordination isomerism
Geometrical isomerism
Linkage isomerism

Paramagnetism is the property of

completely filled electronic sub-shells
paired electrons
unpaired electrons
completely vacant electronic sub-shells

A magnetic moment of 1.73BM will be shown by one among the following

Choose the correct statement

B
C
A
All the above

An example of ambidentate ligand is __________

chloro
nitro
triphenyl phoshine
cyano

Which of the following is paramagnetic in nature?

Which one of the following pairs represents linkage isomers?

both (b) and (c)
C
B
A

chloridobis(ethane-1,2-diammine)nitrito -Ocobalt(II) chloride
chlorobisethylenediaminenitritocobalt(III) chloride
chloridobis(ethane-1,2-diamine)nitro -Ocobalt(III) chloride
chloridobis(ethane-1,2-diamine)nitro -Ocobaltate(III) chloride

A complex in which the oxidation number of the metal is zero is

Naming the ligand in [M(en)2]n+ starts with

any of these
Bis
Di
Bi

An excess of silver nitrate is added to 100ml of a 0.01M solution of penta aqua chloridochromium(III)chloride. The number of moles of AgCl precipitatedwould be

0.01
0.02
0.002
0.2

potassiumtrisoxalatoaluminate(III)
potassiumtrioxalatoaluminate(II)
potassiumtrioxalatoaluminate(III)
potassiumtrioxalatoaluminium(III)

Which one of the following complexes is not expected to exhibit isomerism?

An excess of silver nitrate is added to 100ml of a 0.01M solution of penta aqua chlorido chromium(III)chloride. The number of moles of AgCl precipitated would be

0.2
0.01
0.02
0.002

Which of the following is not true about secondary valency?

They are non directional in nature
It is satisfied by negative ions or neutron molecule
It corresponds to the co=ordination number of metal
both (a) and(b)

Which kind of isomerism is possible for a complex [Co(NH3)4Br2]Cl?

geometrical and optical
optical and ionization
geometrical and ionization
geometrical only

A 'd' block metal ion has a magnetic moment of BM. The number of unpaired electrons are

Ligand which is used to treat hard water

en
Ox
EDTA
NH3

In which of the following coordination entities the magnitude of Δ0 will be maximum?

The total number f electrons denoted by ligands to platinum ion in [pt(en)2 Cl 2] is

The ligand capable of coordinating in two or more ways with the central metal ion are called________ ligands.

ambidendate
didentate
none of the above
tridentate

Formula of tris(ethane-1,2 diamine)iron(II) phosphate

Fac-mer isomerism is shown by

+2 and 0 respectively
+3 and 0 respectively
+3 and -1 respectively
+1 and +1 respectively

Which of the following is wrong about double salts ?

none of the above
they dont associate in to its constituent ions
contains two or more salt in stoichiometric proportions
retain their properties only in solid state

Which one of the following will give a pair of enantiomorphs?

An aqueous solution of (PdCi)2 4NH3 when treated with excess of AgNo3 precipitated 2 moles of AgCl.Predict the secondary valency of the compound

According to CFT ,five d orbitals of an octa hedral complexes split to give

One Orbital with lower energy and four orbitals with higher energy
Three Orbital with lower energy and two orbitals with higher energy
Two Orbitals with lower energy and three orbitals with higher energy
Four Orbital with lower energy and one orbitals with higher energy

3
6
-3
9

The spin only magnetic moment of [MnBr4]2- is 5.9M .Geometry of the complex ion is

Tetra hedral
OctaHedral
Square planar
Pentagonal pyramidal

Crystal field stabilization energy for high spin d5 octahedral complex is

How many geometrical Isomeres are possible for [Pt(Py)(NH3)(Br)(CI)]?

According to IUPAC, No is

nitrosyl
nitrito
nitro
nitrato