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Exam Details

2023 Paper - II Chemistry

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Questions 120
Duration 180 mins
Package Combined Medical Services Examination - Previous Year Papers

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Easy 40 33.3%
Medium 40 33.3%
Hard 40 33.3%

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Multiple Choices 120 100%

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1
2023 · Unclassified
2023 Paper - II Chemistry
Consider the following diagram regarding the radial distribution function for 2s and 2p orbitals : Which one of the following statements is a correct conclusion drawn from the diagram given above ? [IMAGE]
A
2s electrons are less shielded than 2p electrons.
B
2p electrons are less shielded than 2s electrons.
C
2s and 2p orbitals have equal probability of closer approach to nucleus.
D
2s orbital electron density is at a greater distance from nucleus than that of 2p orbital.
2
2023 · Unclassified
2023 Paper - II Chemistry
Which one of the following statements regarding wave functions is not correct ?
A
The square of the wave function gives the probability of finding the electron in the space.
B
The angular wave function of a given type of orbital is dependent on the principal quantum number.
C
The radial function of 2s orbital is both positive and negative.
D
The probability of finding the electron density is zero at a node in the wave function.
3
2023 · Unclassified
2023 Paper - II Chemistry
The electronic configuration of an ion M3+ generated from an element with atomic number 58 is :
A
[Xe]4f1 5d1 6s2
B
[Xe]4f1
C
[Rn]5f3 6d1 7s2
D
[Rn]5f2
4
2023 · Unclassified
2023 Paper - II Chemistry
Which one of the following rules for filling of atomic orbitals is violated in the electronic configuration 1s2 2s2 2px2 2py1 ?
A
Hund's rule of maximum multiplicity
B
Pauli's exclusion principle
C
Aufbau principle
D
Slater's rule
5
2023 · Unclassified
2023 Paper - II Chemistry
Which one of the following pair of elements will have similar atomic radii in d-block of the periodic table ?
A
Sc, Ti
B
La, Hf
C
Zr, Hf
D
Fe, Ru
6
2023 · Unclassified
2023 Paper - II Chemistry
The number of unpaired electrons in the ground state of Lu3+ ion (atomic number 71) is :
A
Zero
B
One
C
Two
D
Three