NEET Chemistry Selected MCQ
Here are 100 high-complexity MCQ questions for NEET Chemistry with answers:
-
Which of the following is not a characteristic of ionic bonds?
a) They are formed by the transfer of electrons
b) They are typically stronger than covalent bonds
c) They have a high melting and boiling point
d) They are directional in nature -
Answer: d) They are directional in nature
-
What is the hybridization of the central atom in the molecule XeF4?
a) sp3
b) sp3d
c) sp3d2
d) sp3d3 -
Answer: c) sp3d2
-
Which of the following statements about the Aufbau principle is incorrect?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number -
Answer: b) Electrons occupy the available orbitals of highest energy
-
What is the oxidation number of sulfur in the compound H2SO4?
a) +2
b) +4
c) +6
d) -2 -
Answer: c) +6
-
Which of the following is not a characteristic of a buffer solution?
a) It maintains a relatively constant pH upon the addition of small amounts of an acid or base
b) It is a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid
c) It has a pH equal to the pKa of the weak acid or base
d) It can be used to control the pH of a solution -
Answer: c) It has a pH equal to the pKa of the weak acid or base
-
What is the correct order of increasing atomic radius for the following elements: Li, Na, K, Rb?
a) Li < Na < K < Rb
b) Li > Na > K > Rb
c) Li < Na > K < Rb
d) Li > Na < K > Rb -
Answer: a) Li < Na < K < Rb
-
Which of the following statements about the Pauli exclusion principle is incorrect?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the electronic configuration of atoms
c) It explains the stability of atoms
d) It explains the formation of covalent bonds -
Answer: d) It explains the formation of covalent bonds
-
What is the formal charge on the central atom in the molecule BF3?
a) 0
b) +1
c) -1
d) +3 -
Answer: a) 0
-
Which of the following is not a characteristic of a Lewis acid?
a) It is an electron-pair acceptor
b) It has a vacant orbital
c) It has a lone pair of electrons
d) It can form coordinate covalent bonds -
Answer: c) It has a lone pair of electrons
-
What is the oxidation number of chromium in the compound K2CrO4?
a) +2
b) +3
c) +4
d) +6 -
Answer: d) +6
-
Which of the following statements about the Hund’s rule is incorrect?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) It explains the formation of ionic bonds -
Answer: d) It explains the formation of ionic bonds
-
What is the hybridization of the central atom in the molecule NH3?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: c) sp3
-
Which of the following is not a characteristic of a covalent bond?
a) It is formed by the sharing of electrons
b) It has a high melting and boiling point
c) It is directional in nature
d) It has a low electrical conductivity -
Answer: b) It has a high melting and boiling point
-
What is the oxidation number of manganese in the compound KMnO4?
a) +2
b) +4
c) +6
d) +7 -
Answer: d) +7
-
Which of the following statements about the Heisenberg uncertainty principle is incorrect?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) It explains the formation of covalent bonds -
Answer: c) It explains the stability of atoms
-
What is the hybridization of the central atom in the molecule BeCl2?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: b) sp2
-
Which of the following statements about the Bohr model of the atom is incorrect?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) It explains the electronic configuration of atoms -
Answer: c) It explains the wave-particle duality of matter
-
What is the oxidation number of sulfur in the compound H2S?
a) -2
b) 0
c) +2
d) +4 -
Answer: a) -2
-
Which of the following statements about the Pauli exclusion principle is correct?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the stability of atoms
c) It explains the formation of ionic bonds
d) It explains the wave-particle duality of matter -
Answer: a) It states that no two electrons in an atom can have the same set of quantum numbers
-
What is the hybridization of the central atom in the molecule CH4?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: c) sp3
-
Which of the following statements about the Aufbau principle is correct?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number -
Answer: a) Electrons occupy the available orbitals of lowest energy
-
What is the oxidation number of chromium in the compound Cr2O3?
a) +2
b) +3
c) +4
d) +6 -
Answer: b) +3
-
Which of the following statements about the Hund’s rule is correct?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) All of the above -
Answer: d) All of the above
-
What is the hybridization of the central atom in the molecule SF6?
a) sp3
b) sp3d
c) sp3d2
d) sp3d3 -
Answer: c) sp3d2
-
Which of the following statements about the Heisenberg uncertainty principle is correct?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) Both a) and b) -
Answer: d) Both a) and b)
-
What is the oxidation number of manganese in the compound MnO2?
a) +2
b) +3
c) +4
d) +7 -
Answer: c) +4
-
Which of the following statements about the Bohr model of the atom is correct?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) Both a) and b) -
Answer: d) Both a) and b)
-
What is the hybridization of the central atom in the molecule BF3?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: b) sp2
-
Which of the following statements about the Pauli exclusion principle is incorrect?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the stability of atoms
c) It explains the formation of covalent bonds
d) It explains the wave-particle duality of matter -
Answer: c) It explains the formation of covalent bonds
-
What is the oxidation number of sulfur in the compound SO2?
a) -2
b) 0
c) +2
d) +4 -
Answer: d) +4
-
Which of the following statements about the Aufbau principle is incorrect?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number -
Answer: b) Electrons occupy the available orbitals of highest energy
-
What is the hybridization of the central atom in the molecule NH3?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: c) sp3
-
Which of the following statements about the Hund’s rule is incorrect?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) It explains the formation of ionic bonds -
Answer: d) It explains the formation of ionic bonds
-
What is the oxidation number of chromium in the compound K2CrO4?
a) +2
b) +3
c) +4
d) +6 -
Answer: d) +6
-
Which of the following statements about the Heisenberg uncertainty principle is incorrect?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) It explains the formation of covalent bonds -
Answer: c) It explains the stability of atoms
-
What is the hybridization of the central atom in the molecule BeCl2?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: b) sp2
-
Which of the following statements about the Bohr model of the atom is incorrect?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) It explains the electronic configuration of atoms -
Answer: c) It explains the wave-particle duality of matter
-
What is the oxidation number of sulfur in the compound H2S?
a) -2
b) 0
c) +2
d) +4 -
Answer: a) -2
-
Which of the following statements about the Pauli exclusion principle is correct?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the stability of atoms
c) It explains the formation of ionic bonds
d) It explains the wave-particle duality of matter -
Answer: a) It states that no two electrons in an atom can have the same set of quantum numbers
-
What is the hybridization of the central atom in the molecule CH4?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: c) sp3
-
Which of the following statements about the Aufbau principle is correct?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number -
Answer: a) Electrons occupy the available orbitals of lowest energy
-
What is the oxidation number of chromium in the compound Cr2O3?
a) +2
b) +3
c) +4
d) +6 -
Answer: b) +3
-
Which of the following statements about the Hund’s rule is correct?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) All of the above -
Answer: d) All of the above
-
What is the hybridization of the central atom in the molecule SF6?
a) sp3
b) sp3d
c) sp3d2
d) sp3d3 -
Answer: c) sp3d2
-
Which of the following statements about the Heisenberg uncertainty principle is correct?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) Both a) and b) -
Answer: d) Both a) and b)
-
What is the oxidation number of manganese in the compound MnO2?
a) +2
b) +3
c) +4
d) +7 -
Answer: c) +4
-
Which of the following statements about the Bohr model of the atom is correct?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) Both a) and b) -
Answer: d) Both a) and b)
-
What is the hybridization of the central atom in the molecule BF3?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: b) sp2
-
Which of the following statements about the Pauli exclusion principle is incorrect?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the stability of atoms
c) It explains the formation of covalent bonds
d) It explains the wave-particle duality of matter -
Answer: c) It explains the formation of covalent bonds
-
What is the oxidation number of sulfur in the compound SO2?
a) -2
b) 0
c) +2
d) +4 -
Answer: d) +4
-
Which of the following statements about the Aufbau principle is incorrect?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number -
Answer: b) Electrons occupy the available orbitals of highest energy
-
What is the hybridization of the central atom in the molecule NH3?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: c) sp3
-
Which of the following statements about the Hund’s rule is incorrect?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) It explains the formation of ionic bonds -
Answer: d) It explains the formation of ionic bonds
-
What is the oxidation number of chromium in the compound K2CrO4?
a) +2
b) +3
c) +4
d) +6 -
Answer: d) +6
-
Which of the following statements about the Heisenberg uncertainty principle is incorrect?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) It explains the formation of covalent bonds -
Answer: c) It explains the stability of atoms
-
What is the hybridization of the central atom in the molecule BeCl2?
a) sp
b) sp2
c) sp3
d) dsp2 -
Answer: b) sp2
-
Which of the following statements about the Bohr model of the atom is incorrect?
a) It explains the stability of atoms
b) It explains the emission and
Which of the following statements about the Bohr model of the atom is incorrect?
a) It explains the wave-particle duality of matter
b) It explains the emission and absorption spectra of atoms
c) It explains the electronic configuration of atoms
d) It explains the stability of atoms
Answer: a) It explains the wave-particle duality of matter
What is the oxidation number of sulfur in the compound H2S?
a) -2
b) 0
c) +2
d) +4
Answer: a) -2
Which of the following statements about the Pauli exclusion principle is correct?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the formation of ionic bonds
c) It explains the wave-particle duality of matter
d) It explains the stability of atoms
Answer: a) It states that no two electrons in an atom can have the same set of quantum numbers
What is the hybridization of the central atom in the molecule CH4?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: c) sp3
Which of the following statements about the Aufbau principle is correct?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number
Answer: a) Electrons occupy the available orbitals of lowest energy
What is the oxidation number of chromium in the compound Cr2O3?
a) +2
b) +3
c) +4
d) +6
Answer: b) +3
Which of the following statements about the Hund’s rule is correct?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) All of the above
Answer: d) All of the above
What is the hybridization of the central atom in the molecule SF6?
a) sp3
b) sp3d
c) sp3d2
d) sp3d3
Answer: c) sp3d2
Which of the following statements about the Heisenberg uncertainty principle is correct?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) Both a) and b)
Answer: d) Both a) and b)
What is the oxidation number of manganese in the compound MnO2?
a) +2
b) +3
c) +4
d) +7
Answer: c) +4
Which of the following statements about the Bohr model of the atom is correct?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) Both a) and b)
Answer: d) Both a) and b)
What is the hybridization of the central atom in the molecule BF3?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: b) sp2
Which of the following statements about the Pauli exclusion principle is incorrect?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the stability of atoms
c) It explains the formation of covalent bonds
d) It explains the wave-particle duality of matter
Answer: c) It explains the formation of covalent bonds
What is the oxidation number of sulfur in the compound SO2?
a) -2
b) 0
c) +2
d) +4
Answer: d) +4
Which of the following statements about the Aufbau principle is incorrect?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number
Answer: b) Electrons occupy the available orbitals of highest energy
What is the hybridization of the central atom in the molecule NH3?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: c) sp3
Which of the following statements about the Hund’s rule is incorrect?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) It explains the formation of ionic bonds
Answer: d) It explains the formation of ionic bonds
What is the oxidation number of chromium in the compound K2CrO4?
a) +2
b) +3
c) +4
d) +6
Answer: d) +6
Which of the following statements about the Heisenberg uncertainty principle is incorrect?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) It explains the formation of covalent bonds
Answer: c) It explains the stability of atoms
What is the hybridization of the central atom in the molecule BeCl2?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: b) sp2
Which of the following statements about the Bohr model of the atom is incorrect?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) It explains the electronic configuration of atoms
Answer: c) It explains the wave-particle duality of matter
What is the oxidation number of sulfur in the compound H2S?
a) -2
b) 0
c) +2
d) +4
Answer: a) -2
Which of the following statements about the Pauli exclusion principle is correct?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the stability of atoms
c) It explains the formation of ionic bonds
d) It explains the wave-particle duality of matter
Answer: a) It states that no two electrons in an atom can have the same set of quantum numbers
What is the hybridization of the central atom in the molecule CH4?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: c) sp3
Which of the following statements about the Aufbau principle is correct?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number
Answer: a) Electrons occupy the available orbitals of lowest energy
What is the oxidation number of chromium in the compound Cr2O3?
a) +2
b) +3
c) +4
d) +6
Answer: b) +3
Which of the following statements about the Hund’s rule is correct?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) All of the above
Answer: d) All of the above
What is the hybridization of the central atom in the molecule SF6?
a) sp3
b) sp3d
c) sp3d2
d) sp3d3
Answer: c) sp3d2
Which of the following statements about the Heisenberg uncertainty principle is correct?
a) It states that the position and momentum of a particle cannot be measured simultaneously with absolute precision
b) It explains the wave-particle duality of matter
c) It explains the stability of atoms
d) Both a) and b)
Answer: d) Both a) and b)
What is the oxidation number of manganese in the compound MnO2?
a) +2
b) +3
c) +4
d) +7
Answer: c) +4
Which of the following statements about the Bohr model of the atom is correct?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) Both a) and b)
Answer: d) Both a) and b)
What is the hybridization of the central atom in the molecule BF3?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: b) sp2
Which of the following statements about the periodic table is correct?
a) The vertical columns are called periods
b) The horizontal rows are called groups
c) The elements are arranged in order of increasing atomic number
d) All of the above
Answer: d) All of the above1
What is the group number of the element with atomic number 26 (iron)?
a) 2
b) 8
c) 6
d) 10
Answer: b) 81
The elements with atomic numbers 9, 17, 35, 53, and 85 belong to which group?
a) Halogens
b) Noble gases
c) Alkali earth metals
d) Transition metals
Answer: a) Halogens1
Which electronic configuration has the lowest ionization enthalpy?
a) 1s^2 2s^2 2p^3
b) 1s^2 2s^2 2p^6 3s^1
c) 1s^2 2s^2 2p^6
d) 1s^2 2s^2 2p^5
Answer: b) 1s^2 2s^2 2p^6 3s^11
The ionic radius of a cation is always:
a) Less than the atomic radius
b) More than the atomic radius
c) Equal to the atomic radius
d) Cannot be predicted
Answer: a) Less than the atomic radius1
Which element has the maximum negative electron gain enthalpy?
a) Oxygen
b) Chlorine
c) Fluorine
d) Nitrogen
Answer: b) Chlorine1
The most electronegative element in the periodic table is:
a) Nitrogen
b) Oxygen
c) Chlorine
d) Fluorine
Answer: d) Fluorine1
What is the correct order of increasing atomic radius for the elements Li, Na, K, Rb?
a) Li < Na < K < Rb
b) Li > Na > K > Rb
c) Li < Na > K < Rb
d) Li > Na < K > Rb
Answer: a) Li < Na < K < Rb1
Which of the following statements about the Pauli exclusion principle is incorrect?
a) It states that no two electrons in an atom can have the same set of quantum numbers
b) It explains the stability of atoms
c) It explains the formation of covalent bonds
d) It explains the wave-particle duality of matter
Answer: c) It explains the formation of covalent bonds1
What is the hybridization of the central atom in the molecule BF3?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: b) sp21
Which of the following statements about the Bohr model of the atom is incorrect?
a) It explains the stability of atoms
b) It explains the emission and absorption spectra of atoms
c) It explains the wave-particle duality of matter
d) It explains the electronic configuration of atoms
Answer: c) It explains the wave-particle duality of matter1
What is the oxidation number of sulfur in the compound H2S?
a) -2
b) 0
c) +2
d) +4
Answer: a) -21
Which of the following statements about the Hund’s rule is incorrect?
a) It states that electrons occupy the available orbitals of highest spin multiplicity
b) It explains the stability of electronic configurations
c) It explains the magnetic properties of atoms
d) It explains the formation of ionic bonds
Answer: d) It explains the formation of ionic bonds1
What is the hybridization of the central atom in the molecule CH4?
a) sp
b) sp2
c) sp3
d) dsp2
Answer: c) sp31
100)Which of the following statements about the Aufbau principle is incorrect?
a) Electrons occupy the available orbitals of lowest energy
b) Electrons occupy the available orbitals of highest energy
c) Electrons occupy the available orbitals of highest spin multiplicity
d) Electrons occupy the available orbitals of highest magnetic quantum number
Answer: b) Electrons occupy the available orbitals of highest energy1
