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Quiz 20
Mdcat-past-papers - NUMS Quiz
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Board: NUMS |
381. Proton is --- times heavier than electron.
1840
1836
1936
2036
382. The amount of energy associated with quantum of radiation is directly proportional to:
Frequency
Wavelength
Velocity
none
383. Shape of subshell is explained by
l
m
n
none
384. 'n' represents which of the following quantum number?
Azimuthal
Principal
Magnetic
Spin
385. The mass of electron is:
1836 times more than mass of proton
1836 times less than mass of proton
1836 times more than mass of neutron
1836 times more than mass of hydrogen
386. If value of azimuthal quantum number is 2 then total values of magnetic quantum number will be:
3
10
5
7
387. Total number of directions of f-orbitals in space are:
7
3
6
3
388. Which of the following quantum number is not obtained from Schrodinger wave equation:
Principle quantum number
Azimuthal quantum number
Magnetic quantum number
Spin quantum number
389. The value of Azimuthal quantum number "l" for 4p orbital is:
0
1
2
3
390. Choose the allowed sets of quantum numbers from the following:
n = 3, l = 2, m = 0, s = +1/2
n = 3, l = 3, m = 0, s = -1/2
n = 4, l = 3, m = 0, s = +1/2
n = 4, l = 2, m = 4, s = -1/2
391. "It is impossible for two electrons residing in same orbital have same quantum number" is statement of:
Hund's rule
Pauli's exclusion
Aufbau principle
None
392. Number of electrons in p orbital are:
10
6
2
14
393. The shape of an orbital is determined by which quantum number?
n
m
l
s
394. The electronic configuration for degenerate orbitals is explained by:
n + 1 rule
Aufbau Principle
Hund's rule
Pauli exclusion
395. The element having the electronic configuration of noble gas notation (Kr) 5s2 4d6 is:
Sr87
Ru103
Pd106
Zr91
396. Maximum electrons that can be placed in p subshell are:
2
6
10
14
397. Apply n+l rule and calculate which of the following orbital has maximum energy?
2p
4s
2d
3s
398. Number of sigma bonds in C₂H₂ are:
2
3
4
5
399. Which statement is true about electron affinity?
The value of electron affinity is always positive.
The value of electron affinity is always negative.
The value of first electron affinity is always positive.
The value of first electron affinity is always negative.
400. Electron affinity decreases down the group due to:
increases in atomic radius
Atomic radius decrease
Shielding decreases
None
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