Home » CHEMISTRY CHAPTERWISE TEST » STRUCTURE OF ATOM-3

STRUCTURE OF ATOM-3

2

TEST SYLLABUS : STRUCTURE OF ATOM
Your Target is to secure Good Rank in NEET - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 45 Questions. The Max. Marks are 180.
(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort.

1 / 45

An ion has 18 electrons in the outermost shell, it is

2 / 45

Which of the following represents correct set of the four quantum numbers for an electron in a 4d subshell ?

3 / 45

The de Broglie wavelength of a car of mass 1000 kg and velocity 36 km/hr is :

4 / 45

Which of the following graph correspond to one node

 

5 / 45

Which set of quantum numbers are not possible?

6 / 45

The shortest wavelength in hydrogen spectrum of Lyman series when RH = 109678 cm-1 is

7 / 45

Heisenberg's uncertainity principle is applicable to

8 / 45

The electronic configuration of gadolinium (Atomic number 64) is

9 / 45

If the Planck’s constant h = 6.6×10-34 Js, the de Broglie wavelength of a particle having momentum of 3.3 × 10-24 kg ms-1 will be

10 / 45

Which of the following sets of quantum numbers represents the highest energy of an atom?

11 / 45

The position of both, an electron and a helium atom is known within 1.0 nm. Further the momentum of the electron is known within 5.0 × 1026 kg ms-1. The minimum uncertainty in the measurement of the momentum of the helium atom is

12 / 45

Which of the following is not correct for electronic distribution in the ground state ?

13 / 45

For azimuthal quantum number l = 3, the maximum number of electrons will be

14 / 45

The orientation of an atomic orbital is governed by

15 / 45

Which of the following is not permissible arrangement of electrons in an atom?

16 / 45

Number of unpaired electrons in N2+ is

17 / 45

The electronic configuration of an element is 1s2, 2s2 2p6, 3s2 3p6 3d5, 4s1. This represents its

18 / 45

What is the correct orbital designation of an electron with the quantum number, n = 4, l = 3, m = – 2, s = 1/2 ?

19 / 45

The mass of a photon with a wavelength equal to 1.54 × 10-8 cm is

20 / 45

The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately Planck’s constant, h = 6.63 × 10-34 Js

21 / 45

The number of spherical nodes in 3p orbitals are

22 / 45

The Heisenberg uncertainity principle will be most significant for which of the following object ?

23 / 45

The number of orbitals present in the fifth shell will be

24 / 45

Uncertainty in the position of an electron (mass = 9.1 × 10–31 kg) moving with a velocity 300 ms–1, accurate upto 0.001% will be (h = 6.63 × 10–34 Js)

25 / 45

What can be the representation of the orbital having 3 angular nodes and n = 5.

26 / 45

The total number of electrons that can be accommodated in all orbitals having principal quantum number 2 and azimuthal quantum number 1 is

27 / 45

Bohr’s model is not able to account for which of the following.

28 / 45

What is the expression of frequency (υ) associated with absorption spectra of the photon.

29 / 45

Which of the following statements do not form a part of Bohr’s model of hydrogen atom ?

30 / 45

What will be the sum of all possible values of l and m for n = 5 ?

31 / 45

The values of Planck's constant is 6.63 × 10-34 Js. The velocity of light is 3.0 × 108 m s-1. Which value is closest to the wavelength in nanometres of a quantum of light with
frequency of 8 × 1015 s-1?

32 / 45

The order of filling of electrons in the orbitals of an atom will be

33 / 45

The uncertainty in the position of an electron (mass = 9.1 × 10-28 g) moving with a velocity of 3.0 × 104 cm s-1 accurate upto 0.011% will be

34 / 45

The orbitals are called degenerate when

35 / 45

Which of the following sets of quantum numbers is correct for an electron in 4f orbital ?

36 / 45

For which one of the following sets of four quantum numbers, an electron will have the heighest energy?

37 / 45

If the energy difference between the ground state of an atom and its excited state is 4.4 × 10-4 J, the wavelength of photon required to produce the transition :

38 / 45

Arrange the orbital of same shell in the increasing order of shielding strength of the outer shell of electrons. s, f, d, p

39 / 45

According to the Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon ?

40 / 45

If electron, hydrogen, helium and neon nuclei are all moving with the velocity of light, then the wavelength associated with these particles are in the order

41 / 45

If there are five radial nodes, then what can be the correct representation of the orbital for n = 8.

42 / 45

The following quantum numbers are possible for how many orbital(s) n = 3, l = 2, m = +2 ?

43 / 45

The number of d-electrons retained in Fe2+ (At. no. of Fe = 26) ion is

44 / 45

Heisenberg uncertainty principle can be explained as

45 / 45

In a given atom no two electrons can have the same values for all the four quantum numbers. This is called

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