JEE Main Chemistry - Transition Metals Including Lanthanides and Actinides
Exam Duration: 60 Mins Total Questions : 30
which one of the following set of 3d series do not belong to transition elements ?
- (a)
Fe, Co, Ni
- (b)
Ru, Rh, Pd
- (c)
Cu, Ag, Au
- (d)
Zn, Cd, Hg
The common oxidation state of the elements of transition series is
- (a)
+1
- (b)
+2
- (c)
+3
- (d)
+4
which one of the following is lanthanides element?
- (a)
Cr
- (b)
Mn
- (c)
Co
- (d)
Ce
Which one of the following is first man-made element?
- (a)
Sc
- (b)
Ti
- (c)
Tc
- (d)
Mo
The properties of transition elements Zr and Hf are similar because
- (a)
they possess same number of electrons
- (b)
both have similar radii
- (c)
both belong to d-block elements
- (d)
None of these
which one of the following transition elements exhibits the oxidation state of 8?
- (a)
Hf
- (b)
Ta
- (c)
W
- (d)
Ru
Increasing Paramagnetic character of dispositive ion of 29Cu, 28Ni, 27Co, 26Fe, 25Mn follow the order:
- (a)
Mn2+>Fe2+>Ni2+>Co2+>Cu2+
- (b)
Mn2+>Fe2+>Ni2+>Cu2+>Co2+
- (c)
Ni2+>Mn2+>Fe2+>Co2+>Cu2+
- (d)
Mn2+>Fe2+>Co2+>Ni2+>Cu2+
which one of the following elements does not belong to the first transition series?
- (a)
Fe
- (b)
Cr
- (c)
Ni
- (d)
Ag
The outer electronic configuration of Cu2+ is
- (a)
3d104s
- (b)
3d104s1
- (c)
3d104s2
- (d)
3d104s2
The outer electronic configuration of 58Ce is
- (a)
4f15d16s
- (b)
4f05d26s2
- (c)
4f0.5d36s2
- (d)
None of these
The value of Bohr magneton \((\mu )\) for Cr2+ is
- (a)
2.76
- (b)
3.86
- (c)
4.80
- (d)
5.96
which one of the following transition metal iones has the least magnetic moment?
- (a)
Cr2+
- (b)
Ti2+
- (c)
V2+
- (d)
Mn2+
Which one of the following ores is used for the manufacture of potassium dichromate?
- (a)
lead chromate
- (b)
chromite
- (c)
chrome red
- (d)
chrome alum
Pyrolusite is
- (a)
MnO2
- (b)
Mn3O4
- (c)
MnO
- (d)
KMnO4
which one of the following chromium compounds is used in tanning leather?
- (a)
CrCI3
- (b)
K2SO4.AI2(SO4)3.24H2O
- (c)
Cr2O3
- (d)
NONE OF THESE
An acidified solution of potassium dichromate is treated with H2S. In the reaction, the oxidation number of chromium :
- (a)
increase from +3 to +6
- (b)
decrease from +6 to +3
- (c)
remains unchanged
- (d)
decrease from +6 to +2
Manganese exhibitts the most stable state in
- (a)
2
- (b)
5
- (c)
6
- (d)
7
Besides carbon the essential constituent of stainless steel is
- (a)
V
- (b)
Cr
- (c)
Mn
- (d)
Co
which of the following statements concerning Lanthanide elements is false?
- (a)
Lanthanides are separated from one another by ion exchange methods
- (b)
Most characteristic oxidation state of lanthanide elements is +3
- (c)
All lanthanides are highly dense metals
- (d)
The ionic radii of trivalent lanthanides steadily increase in the atomic number
which of the following does not exhibit the variable oxidation state?
- (a)
Zn
- (b)
Mn
- (c)
Fe
- (d)
Cu
For the process\(Cu\quad (g)\rightarrow { Cu }^{ + }\quad (g)+e\), the electron is removed from
- (a)
3d-subshell
- (b)
4s-subshell
- (c)
3p-subshell
- (d)
any one of the above
which of the following compounds is diamagnetic?
- (a)
ZncI2
- (b)
CuSO4
- (c)
NiCI4
- (d)
CrCI3
which of the following can be used for the conversion of potassium manganate to potassium permanganate?
- (a)
O3
- (b)
electrolysis
- (c)
CI2
- (d)
ALL OF THESE
Point out the incorrect statement regarding transition elements. The have
- (a)
high m.p. and high b.p
- (b)
high densities
- (c)
high thermal and electrical conducctivity
- (d)
low tensile strength
which of the following statements about chromium group is not true?
- (a)
The chromium group elements form basic oxides
- (b)
The oxy-chromium group metals are hydrolysed to have oxy-acids.
- (c)
The metals of chromium group are Cr, MO and N
- (d)
The important oxidation state of chromium group is +3
which one of the following is not a condition for complex formation?
- (a)
variable oxidation states
- (b)
small size
- (c)
higher nuclear charge
- (d)
availability of vacant d-orbitals
d-block elements form coloured ions because, they
- (a)
absorb some energy for d-s transition
- (b)
absorb some energy d-d transition
- (c)
absorb some energy for p-d transition
- (d)
do not absorb any energy
which of these ions has the greatest tendency to form complex ions?
- (a)
K+
- (b)
Hg2+
- (c)
Co3+
- (d)
Zn2+
The first ionisation energy of copper is higher than that of sodium because
- (a)
copper is a non-transitional elements
- (b)
d-electron have lesser screening effect
- (c)
an electron is removed from a s-orbital
- (d)
the force of attraction between the electron and nucleus in a copper atom is greater than that in a sodium atom.
On heating a mixture of chrome iron and carbon in an electric furnace, the product formed is
- (a)
bronze
- (b)
invar
- (c)
ferro-chrome
- (d)
stainless steel