The prehistoric rock shelters of Bhimbetka are located in which district of Madhya Pradesh?
A
Satna
B
Dhar
C
Raisen
D
Sehore
Question 2Single Answer
Bhimbetka rock shelters were brought to scholarly attention by which archaeologist?
A
H. D. Sankalia
B
V. S. Wakankar
C
D. R. Bhandarkar
D
R. D. Banerji
Question 3Single Answer
Bhimbetka is especially important for the study of which aspect of prehistoric Madhya Pradesh?
A
Maritime trade
B
Rock paintings and human habitation
C
Iron coinage
D
Temple inscriptions
Question 4Single Answer
The Bhimbetka rock shelters were inscribed on the UNESCO World Heritage List in which year?
A
1999
B
2001
C
2005
D
2003
Question 5Single Answer
The prehistoric site Adamgarh is situated near which city?
A
Ujjain
B
Narmadapuram
C
Jabalpur
D
Gwalior
Question 6Single Answer
The Narmada Valley is particularly significant for evidence related to which phase of human history?
A
Maratha period
B
Gupta period
C
Sultanate period
D
Palaeolithic period
Question 7Single Answer
The famous prehistoric hominin fossil from the Narmada Valley was discovered at which site?
A
Kayatha
B
Navdatoli
C
Eran
D
Hathnora
Question 8Single Answer
Hathnora, an important prehistoric site, lies on the bank of which river?
A
Narmada
B
Betwa
C
Chambal
D
Son
Question 9Single Answer
Which archaeological culture derives its name from a site near Ujjain?
A
Ahar culture
B
Kayatha culture
C
Jorwe culture
D
Ochre Coloured Pottery culture
Question 10Single Answer
Navdatoli, an important Chalcolithic settlement, is situated near which historic town?
A
Maheshwar
B
Mandu
C
Vidisha
D
Chanderi
Question 11Single Answer
Navdatoli is primarily associated with which Chalcolithic culture?
A
Painted Grey Ware culture
B
Harappan culture
C
Malwa culture
D
Northern Black Polished Ware culture
Question 12Single Answer
The archaeological site of Maheshwar-Navdatoli is located on the bank of which river?
A
Shipra
B
Narmada
C
Betwa
D
Ken
Question 13Single Answer
Which ancient city of Madhya Pradesh was known as Avanti's major political centre?
A
Tripuri
B
Ujjayini
C
Padmavati
D
Dashapura
Question 14Single Answer
Ancient Avanti was one of the how many Mahajanapadas mentioned in Buddhist literature?
A
Eight
B
Twelve
C
Sixteen
D
Twenty-four
Question 15Single Answer
Which city served as the capital of northern Avanti?
A
Ujjayini
B
Mahishmati
C
Eran
D
Vidisha
Question 16Single Answer
Mahishmati, an important ancient city, was traditionally associated with which river?
A
Chambal
B
Narmada
C
Sindh
D
Tapti
Question 17Single Answer
Which Mauryan ruler is traditionally associated with Ujjain as a provincial governor before becoming emperor?
A
Bindusara
B
Dasharatha
C
Ashoka
D
Brihadratha
Question 18Single Answer
The famous Sanchi Stupa is situated near which ancient urban centre?
A
Tripuri
B
Ujjain
C
Vidisha
D
Mahishmati
Question 19Single Answer
The original Great Stupa at Sanchi is traditionally attributed to which ruler?
A
Samudragupta
B
Kanishka
C
Ashoka
D
Harsha
Question 20Single Answer
The Heliodorus Pillar at Besnagar near Vidisha was erected by an ambassador of which Indo-Greek king?
A
Menander
B
Demetrius
C
Antialcidas
D
Apollodotus
Question 21Single Answer
Heliodorus described himself as a devotee of which deity?
A
Vasudeva
B
Shiva
C
Surya
D
Karttikeya
Question 22Single Answer
The ancient site of Eran is located in which present-day district?
A
Morena
B
Sagar
C
Dhar
D
Rewa
Question 23Single Answer
The Eran inscription associated with the first known epigraphic evidence of sati belongs to the reign of which Gupta ruler?
A
Chandragupta I
B
Samudragupta
C
Bhanugupta
D
Skandagupta
Question 24Single Answer
The famous Varaha sculpture at Eran represents which incarnation of Vishnu?
A
Fish
B
Tortoise
C
Boar
D
Dwarf
Question 25Single Answer
Dashapura, an important ancient city, is identified with which modern city?
A
Datia
B
Dewas
C
Mandsaur
D
Damoh
Question 26Single Answer
The Mandsaur inscription of the silk weavers is an important source for the history of which dynasty?
A
Satavahana
B
Maurya
C
Kushana
D
Gupta
Question 27Single Answer
The Udayagiri caves near Vidisha flourished prominently during the rule of which dynasty?
A
Paramara
B
Gupta
C
Kalachuri
D
Chandela
Question 28Single Answer
Which Gupta ruler is particularly associated with the Udayagiri cave inscriptions?
A
Kumaragupta I
B
Vishnugupta
C
Skandagupta
D
Chandragupta II
Question 29Single Answer
The ancient city of Tripuri was located near present-day which city?
A
Guna
B
Indore
C
Jabalpur
D
Neemuch
Question 30Single Answer
Tripuri became an important capital of which medieval dynasty?
A
Paramaras
B
Chandelas
C
Kalachuris
D
Tomaras
Question 31Single Answer
The Paramara dynasty established its principal political centre in which region of Madhya Pradesh?
A
Malwa
B
Bundelkhand
C
Baghelkhand
D
Mahakoshal
Question 32Single Answer
Which ruler is regarded as one of the most celebrated kings of the Paramara dynasty?
A
Yashovarman
B
Gangeyadeva
C
Bhoja
D
Kirttivarman
Question 33Single Answer
King Bhoja made which city an important centre of learning and political power?
A
Orchha
B
Gwalior
C
Dhar
D
Burhanpur
Question 34Single Answer
Bhojpur, famous for the Bhojeshwar Temple, is associated with which ruler?
A
Raja Man Singh Tomar
B
Raja Bhoja
C
Raja Chhatrasal
D
Baz Bahadur
Question 35Single Answer
The unfinished Bhojeshwar Temple at Bhojpur is principally dedicated to which deity?
A
Shiva
B
Vishnu
C
Surya
D
Brahma
Question 36Single Answer
The Khajuraho group of temples was primarily constructed under which dynasty?
A
Kalachuri
B
Paramara
C
Chandela
D
Tomara
Question 37Single Answer
Khajuraho is located in which present-day district of Madhya Pradesh?
A
Satna
B
Panna
C
Tikamgarh
D
Chhatarpur
Question 38Single Answer
The Kandariya Mahadeva Temple at Khajuraho is dedicated to which deity?
A
Vishnu
B
Ganesha
C
Shiva
D
Surya
Question 39Single Answer
Which Chandela ruler is generally associated with the construction of the Kandariya Mahadeva Temple?
A
Dhanga
B
Paramardi
C
Yashovarman
D
Vidyadhara
Question 40Single Answer
The Lakshmana Temple at Khajuraho was built during the reign of which Chandela ruler?
A
Yashovarman
B
Vidyadhara
C
Paramardi
D
Trailokyavarman
Question 41Single Answer
Which medieval dynasty ruled from Gwalior and made significant contributions to music and architecture?
A
Sena
B
Kalachuri
C
Tomara
D
Gahadavala
Question 42Single Answer
Man Singh Palace in Gwalior Fort was constructed by which ruler?
A
Chhatrasal
B
Bir Singh Deo
C
Man Singh Tomar
D
Hoshang Shah
Question 43Single Answer
Raja Man Singh Tomar is particularly remembered for patronage of which art?
A
Painting
B
Puppetry
C
Sculpture
D
Music
Question 44Single Answer
The historic city of Mandu rose to prominence as a capital of which medieval kingdom?
A
Bengal Sultanate
B
Gujarat Sultanate
C
Jaunpur Sultanate
D
Malwa Sultanate
Question 45Single Answer
Who founded the independent Malwa Sultanate in the early fifteenth century?
A
Mahmud Khalji
B
Dilawar Khan Ghuri
C
Hoshang Shah
D
Baz Bahadur
Question 46Single Answer
Which ruler shifted the capital of the Malwa Sultanate from Dhar to Mandu?
A
Dilawar Khan
B
Hoshang Shah
C
Ghiyas-ud-din Khalji
D
Baz Bahadur
Question 47Single Answer
Hoshang Shah's tomb at Mandu is notable as an early example of extensive use of which material?
A
Red sandstone
B
White marble
C
Granite
D
Black basalt
Question 48Single Answer
The Jahaz Mahal at Mandu was built during the rule of which dynasty?
A
Tomara dynasty
B
Khalji dynasty of Malwa
C
Chandela dynasty
D
Paramara dynasty
Question 49Single Answer
Baz Bahadur is historically associated with which place?
A
Mandu
B
Orchha
C
Chanderi
D
Gwalior
Question 50Single Answer
Rani Roopmati is remembered in the history and folklore of Madhya Pradesh in association with whom?
A
Hoshang Shah
B
Baz Bahadur
C
Mahmud Khalji
D
Man Singh Tomar
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Concerned Subject (Chemistry)
Question 51Single Answer
According to Bohr’s model, the angular momentum of an electron in a permitted orbit is quantized as?
A
nh/2π
B
h/n
C
2πnh
D
nh²/2π
Question 52Single Answer
Which quantum number primarily determines the shape of an atomic orbital?
A
Azimuthal quantum number
B
Principal quantum number
C
Magnetic quantum number
D
Spin quantum number
Question 53Single Answer
Which quantum number determines the orientation of an orbital in space?
A
n
B
mₗ
C
l
D
mₛ
Question 54Single Answer
The maximum number of electrons that can occupy a subshell having azimuthal quantum number l is?
A
2l + 1
B
2(2l + 1)
C
2l²
D
2n²
Question 55Single Answer
Which principle states that no two electrons in an atom can have identical values of all four quantum numbers?
A
Pauli exclusion principle
B
Hund’s rule
C
Aufbau principle
D
Heisenberg principle
Question 56Single Answer
According to Hund’s rule, electrons occupy degenerate orbitals by?
A
Pairing first
B
Having opposite spins in separate orbitals
C
Occupying only one orbital
D
Occupying singly with parallel spins first
Question 57Single Answer
Which orbital is filled immediately before the 3d orbital according to the Aufbau principle?
A
4s
B
3p
C
4p
D
3s
Question 58Single Answer
The de Broglie wavelength is inversely proportional to?
A
Charge
B
Energy only
C
Momentum
D
Atomic number
Question 59Single Answer
Heisenberg’s uncertainty principle relates simultaneous uncertainty in position and?
A
Momentum
B
Spin
C
Charge
D
Mass
Question 60Single Answer
A nodal plane in an atomic orbital is a region where?
A
Electron density is maximum
B
Electron velocity is maximum
C
Potential energy is zero
D
Probability of finding an electron is zero
Question 61Single Answer
The number of radial nodes in a 3p orbital is?
A
0
B
1
C
2
D
3
Question 62Single Answer
The total number of nodes in a 4d orbital is?
A
1
B
2
C
3
D
4
Question 63Single Answer
Which hybridization is associated with a tetrahedral arrangement?
A
sp³
B
sp²
C
sp
D
dsp²
Question 64Single Answer
According to VSEPR theory, the shape of BF₃ is?
A
Trigonal pyramidal
B
Tetrahedral
C
T-shaped
D
Trigonal planar
Question 65Single Answer
The molecular geometry of NH₃ according to VSEPR theory is?
A
Trigonal planar
B
Trigonal pyramidal
C
Tetrahedral
D
Bent
Question 66Single Answer
The shape of SF₆ is?
A
Square planar
B
Octahedral
C
Trigonal bipyramidal
D
Tetrahedral
Question 67Single Answer
Which molecule has a square planar geometry?
A
XeF₄
B
SF₄
C
CH₄
D
NH₃
Question 68Single Answer
According to VSEPR theory, which repulsion is strongest?
A
Bond pair–bond pair
B
Lone pair–bond pair
C
Lone pair–lone pair
D
π bond–π bond
Question 69Single Answer
The geometry of ClF₃ is?
A
Trigonal planar
B
T-shaped
C
Linear
D
Square planar
Question 70Single Answer
In valence bond theory, a covalent bond results primarily from?
A
Complete transfer of electrons
B
Electrostatic attraction of ions
C
Overlap of atomic orbitals
D
Nuclear fusion
Question 71Single Answer
A sigma bond is formed by?
A
Head-on overlap of orbitals
B
Sidewise overlap only
C
No orbital overlap
D
Transfer of electrons
Question 72Single Answer
A pi bond is formed by?
A
Axial overlap
B
Sidewise overlap of parallel orbitals
C
s-s overlap only
D
Hybrid orbital overlap only
Question 73Single Answer
In an octahedral crystal field, the d orbitals split into?
A
e and t₂ sets
B
t₂g and e_g sets
C
a₁ and b₂ sets
D
e₁ and e₂ sets
Question 74Single Answer
In an octahedral crystal field, which orbitals constitute the e_g set?
A
dxy and dxz
B
dxz and dyz
C
dx²−y² and dz²
D
dxy, dxz and dyz
Question 75Single Answer
In a tetrahedral crystal field, which set of d orbitals has lower energy?
A
e
B
t₂
C
t₂g
D
e_g
Question 76Single Answer
The tetrahedral crystal field splitting Δt is approximately what fraction of octahedral splitting Δo for comparable ligands?
A
4/9
B
1/2
C
2/3
D
9/4
Question 77Single Answer
Which ligand is generally classified as a strong-field ligand?
A
I⁻
B
Br⁻
C
F⁻
D
CN⁻
Question 78Single Answer
Which ligand lies near the weak-field end of the spectrochemical series?
A
CO
B
I⁻
C
NH₃
D
CN⁻
Question 79Single Answer
High-spin complexes are favored when?
A
Crystal field splitting greatly exceeds pairing energy
B
Ligands are always π acceptors
C
Pairing energy exceeds crystal field splitting
D
Metal oxidation state is always zero
Question 80Single Answer
Low-spin octahedral complexes are favored by?
A
Weak-field ligands
B
Large metal ions only
C
Strong-field ligands
D
Halide ligands exclusively
Question 81Single Answer
Crystal field stabilization energy for an octahedral d³ ion is?
A
−0.4Δo
B
−0.8Δo
C
−1.2Δo
D
−2.0Δo
Question 82Single Answer
Which phenomenon is explained more satisfactorily by ligand field theory than by simple crystal field theory?
A
Covalent contribution to metal-ligand bonding
B
Nuclear stability
C
Radioactivity
D
Isotopic abundance
Question 83Single Answer
In molecular orbital theory, bond order is calculated from?
A
Sum of bonding and antibonding electrons
B
Difference between protons and electrons
C
Half the difference between bonding and antibonding electrons
D
Half the number of valence electrons
Question 84Single Answer
The bond order of N₂ according to molecular orbital theory is?
A
1
B
3
C
2
D
4
Question 85Single Answer
The paramagnetism of O₂ is explained by the presence of?
A
Two paired electrons in π orbitals
B
One unpaired electron in σ orbital
C
Two unpaired electrons in π orbitals
D
Empty antibonding orbitals
Question 86Single Answer
Removal of one electron from O₂ to form O₂⁺ causes its bond order to?
A
Decrease
B
Become zero
C
Increase
D
Remain unchanged
Question 87Single Answer
According to HSAB theory, a hard acid preferentially binds to?
A
Soft base
B
Neutral radical
C
Hard base
D
π acid only
Question 88Single Answer
Which of the following is a hard Lewis acid?
A
Al³⁺
B
Hg²⁺
C
Ag⁺
D
Pd²⁺
Question 89Single Answer
Which species is classified as a soft base?
A
I⁻
B
OH⁻
C
F⁻
D
H₂O
Question 90Single Answer
According to HSAB theory, Hg²⁺ shows particularly high affinity toward?
A
F⁻
B
OH⁻
C
S²⁻
D
H₂O
Question 91Single Answer
Solvation of ions is generally strongest in solvents having?
A
High polarity and suitable donor ability
B
Low dielectric constant only
C
Zero dipole moment
D
No lone pairs
Question 92Single Answer
A protic solvent is characterized by its ability to?
A
Accept electrons only
B
Contain no hydrogen
C
Donate hydrogen bonds
D
Behave only as an oxidant
Question 93Single Answer
Which is a polar aprotic solvent?
A
Water
B
Methanol
C
Dimethyl sulfoxide
D
Acetic acid
Question 94Single Answer
In aqueous solution, small highly charged cations are strongly hydrated because of their?
A
High charge density
B
Low charge density
C
Large polarizability only
D
Metallic bonding
Question 95Single Answer
The general valence-shell configuration of alkali metals is?
A
ns²
B
ns²np¹
C
ns¹
D
(n−1)d¹ns²
Question 96Single Answer
The most electronegative element is?
A
Oxygen
B
Chlorine
C
Fluorine
D
Nitrogen
Question 97Single Answer
Lithium shows a diagonal relationship with?
A
Sodium
B
Calcium
C
Magnesium
D
Beryllium
Question 98Single Answer
Beryllium compounds are more covalent than those of other alkaline earth metals mainly because Be²⁺ has?
A
Low charge density
B
Large ionic radius
C
High polarizing power
D
Low ionization energy
Question 99Single Answer
Which alkali metal forms a stable nitride directly with nitrogen?
A
Sodium
B
Potassium
C
Cesium
D
Lithium
Question 100Single Answer
The anomalous behavior of the first element of each p-block group is mainly associated with?
A
Large atomic size
B
Absence of d orbitals and high electronegativity
C
Low ionization enthalpy
D
High metallic character
Question 101Single Answer
Boron differs from other group 13 elements primarily because it is?
A
A non-metal
B
A typical metal
C
An alkali metal
D
A noble gas
Question 102Single Answer
The inert pair effect becomes more pronounced?
A
Up a p-block group
B
Down a p-block group
C
Across period 2 only
D
Only in transition metals
Question 103Single Answer
The unusually high stability of Pb(II) relative to Pb(IV) is mainly due to?
A
Lanthanide contraction
B
Hydrogen bonding
C
Inert pair effect
D
Crystal field splitting
Question 104Single Answer
Which allotrope of carbon has an extended three-dimensional network of sp³-hybridized carbon atoms?
A
Graphite
B
Fullerene
C
Diamond
D
Graphene
Question 105Single Answer
Electrical conductivity of graphite is mainly associated with?
A
Hydrogen bonding
B
Ionic bonds
C
sp³ hybridization
D
Mobile π electrons
Question 106Single Answer
Nitrogen exists as N₂ with an exceptionally strong bond because it contains?
A
Single bond
B
Double bond
C
Triple bond
D
Ionic bond
Question 107Single Answer
Which oxide of nitrogen is paramagnetic?
A
NO
B
N₂O₃
C
N₂O
D
N₂O₅
Question 108Single Answer
The bleaching action of chlorine in moist conditions is primarily due to?
A
Oxidation
B
Reduction
C
Dehydration
D
Polymerization
Question 109Single Answer
Xenon forms compounds most readily with?
A
Sodium
B
Fluorine
C
Hydrogen
D
Carbon
Question 110Single Answer
Transition elements commonly show variable oxidation states because?
A
Only s electrons participate in bonding
B
Their d orbitals are always full
C
ns and (n−1)d orbitals have comparable energies
D
Their ionization energies are zero
Question 111Single Answer
Which transition metal has the highest oxidation state in permanganate ion?
A
Mn(+2)
B
Mn(+4)
C
Mn(+7)
D
Mn(+6)
Question 112Single Answer
The color of many transition metal ions is primarily due to?
A
Nuclear transitions
B
Ionic radius
C
Proton transfer
D
d-d electronic transitions
Question 113Single Answer
Zn²⁺ salts are commonly colorless because Zn²⁺ has?
A
d⁰ configuration
B
d⁵ configuration
C
d⁸ configuration
D
d¹⁰ configuration
Question 114Single Answer
Which transition metal ion is expected to have five unpaired electrons in a high-spin state?
A
Fe³⁺
B
Ni²⁺
C
Cu²⁺
D
Zn²⁺
Question 115Single Answer
Lanthanide contraction refers to the gradual decrease in?
A
Nuclear charge across lanthanides
B
Number of f electrons
C
Oxidation state
D
Atomic and ionic radii across the lanthanide series
Question 116Single Answer
Lanthanide contraction occurs mainly because 4f electrons?
A
Shield nuclear charge poorly
B
Shield nuclear charge very effectively
C
Have no interaction with nucleus
D
Are absent from lanthanides
Question 117Single Answer
The most common oxidation state of lanthanides is?
A
+1
B
+3
C
+2
D
+6
Question 118Single Answer
Actinides show a wider range of oxidation states than lanthanides because?
A
They lack f electrons
B
5f electrons are completely inert
C
5f, 6d and 7s orbitals are relatively close in energy
D
Their nuclear charges are lower
Question 119Single Answer
All actinide elements are?
A
Radioactive
B
Diamagnetic
C
Gaseous
D
Non-metallic
Question 120Single Answer
According to Werner’s theory, primary valency corresponds approximately to?
A
Coordination number
B
Number of geometrical isomers
C
Number of ligands
D
Oxidation state
Question 121Single Answer
According to Werner’s theory, secondary valency corresponds to?
A
Coordination number
B
Oxidation number
C
Atomic number
D
Mass number
Question 122Single Answer
The coordination number of cobalt in [Co(NH₃)₆]³⁺ is?
A
3
B
4
C
8
D
6
Question 123Single Answer
Which ligand is bidentate?
A
NH₃
B
Ethylenediamine
C
H₂O
D
Cl⁻
Question 124Single Answer
EDTA commonly acts as a?
A
Monodentate ligand
B
Hexadentate ligand
C
Tetradentate ligand
D
Bidentate ligand
Question 125Single Answer
A ligand that binds through two different possible donor atoms is called?
A
Chelating ligand
B
Macrocyclic ligand
C
Bridging ligand only
D
Ambidentate ligand
Question 126Single Answer
Which ligand can produce linkage isomerism?
A
NH₃
B
H₂O
C
en
D
NO₂⁻
Question 127Single Answer
Cis-trans isomerism in coordination compounds is classified as?
A
Optical isomerism
B
Coordination isomerism
C
Ionization isomerism
D
Geometrical isomerism
Question 128Single Answer
Which complex can show optical isomerism?
A
[Co(en)₃]³⁺
B
[Ni(CO)₄]
C
[PtCl₄]²⁻
D
[Ag(NH₃)₂]⁺
Question 129Single Answer
Ionization isomerism results from interchange between?
A
Two metal centers
B
A coordinated ion and a counter ion
C
Two identical ligands
D
Two oxidation states
Question 130Single Answer
Jahn-Teller distortion occurs when an electronically degenerate state can be stabilized by?
A
Increasing symmetry
B
Removing all ligands
C
Geometrical distortion
D
Complete ionization
Question 131Single Answer
Which octahedral electronic configuration commonly exhibits strong Jahn-Teller distortion?
A
d³
B
d⁹
C
High-spin d⁵
D
d¹⁰
Question 132Single Answer
Cu(II) octahedral complexes often show tetragonal distortion because Cu²⁺ is?
A
d⁰
B
d⁹
C
d⁵
D
d¹⁰
Question 133Single Answer
Orgel diagrams are primarily used to interpret?
A
Vibrational spectra of organic molecules
B
X-ray diffraction
C
NMR spectra
D
Electronic spectra of high-spin transition-metal complexes
Question 134Single Answer
Unlike Orgel diagrams, Tanabe-Sugano diagrams explicitly account for variations in?
A
Magnetic field only
B
Ligand-field strength relative to interelectronic repulsion
C
Nuclear spin
D
Atomic mass
Question 135Single Answer
Laporte selection rule mainly affects electronic transitions in complexes possessing?
A
A center of inversion
B
No symmetry
C
Hydrogen bonds
D
Ionic bonding only
Question 136Single Answer
d-d transitions in centrosymmetric octahedral complexes are generally?
A
Laporte allowed
B
Nuclear transitions
C
Always spin allowed and intense
D
Laporte forbidden
Question 137Single Answer
Charge-transfer transitions are usually more intense than d-d transitions because they are often?
A
Strongly forbidden
B
Nuclear in origin
C
Electric-dipole allowed
D
Independent of ligands
Question 138Single Answer
The chelate effect generally makes complexes containing multidentate ligands?
A
Less stable than analogous monodentate complexes
B
Always diamagnetic
C
Always insoluble
D
More stable than analogous monodentate complexes
Question 139Single Answer
The enhanced stability associated with the chelate effect has an important contribution from?
A
Entropy
B
Radioactivity
C
Nuclear fission
D
Surface tension
Question 140Single Answer
The oxidation state of Fe in [Fe(CN)₆]⁴⁻ is?
A
0
B
+2
C
+1
D
+3
Question 141Single Answer
The oxidation state of Co in [Co(NH₃)₅Cl]²⁺ is?
A
+1
B
+3
C
+2
D
+4
Question 142Single Answer
The coordination geometry of [Ni(CN)₄]²⁻ is generally?
A
Tetrahedral
B
Square planar
C
Octahedral
D
Trigonal planar
Question 143Single Answer
An organometallic compound must contain at least one direct bond between a metal and?
A
Oxygen
B
Nitrogen
C
Hydrogen
D
Carbon
Question 144Single Answer
The 18-electron rule in organometallic chemistry is analogous to the attainment of?
A
A filled valence shell containing nine orbitals
B
An incomplete octet
C
A half-filled p shell
D
A noble-gas nucleus
Question 145Single Answer
The 18-electron rule is especially useful for predicting stability of?
A
Main-group hydrides only
B
Transition-metal organometallic complexes
C
Ionic salts only
D
Lanthanide oxides exclusively
Question 146Single Answer
Which ligand is considered a strong π acceptor in organometallic chemistry?
A
H₂O
B
CO
C
F⁻
D
OH⁻
Question 147Single Answer
Metal-carbonyl bonding involves σ donation from CO to metal and?
A
Ionic dissociation only
B
Proton transfer to metal
C
π back-donation from metal to CO
D
Hydrogen bonding only
Question 148Single Answer
Increased metal-to-CO π back-bonding generally causes the C–O bond to?