Do Mocktest Online Test Series

DOMOCKTEST

Structure of Atom – Chemistry | NEET Online Mock test

Online Mock Test Description

Mock TestStructure of Atom
ExamNEET Medical Test
SubjectChemistry
Marks100
No. Questions50 Questions
Time50 Minutes

12

Structure of Atom - NEET (Chemistry)

Learn more! Practice more! Score more!

Best of Luck!

1 / 50

The specific charge on an electron is

  1.  5.27 C/kg
  2.  5.27  e.s.u./g
  3.  1.758 x 1011 C/g
  4.  5.27 x 1017 e.s.u./g

2 / 50

The energy of a photon having a wavelength of 0.5Å would be

  1. 3.98 x 10-15 J
  2. 5.75 x 10-16 J
  3. 5.25 x 10-18 J
  4. 9 x 10-16 J

3 / 50

Which one is correct regarding the photoelectric effect?

4 / 50

The energy of an electron in the 5th orbit of the H-atom is

5 / 50

According to Bohr's atomic theory, which of the following is correct?

  1.  Time Period α n4/Z2
  2. K.E. of e- α Z2/n2
  3. T.E. α Z/n
  4.  Frequency of revolution α Z2/n4

6 / 50

The intensity of spectral lines depends upon

7 / 50

An electron in H-atom jumps from the nth orbit to the 3rd orbit. If three spectral lines are possible for the transition, the value of n is

8 / 50

Which of the following is correct?

9 / 50

Uncertainty in the position of an electron is 'x' m and uncertainty in its velocity is 5.72 x 107 x m/s then the value of x will be

  1. 1.012 x 10-10
  2. 1.012 x 10-12
  3. 2.052 x 10-8
  4. 3.012 x 10-12

10 / 50

Correct relationship regarding de Broglie's hypothesis.

11 / 50

The correct set of 4 quantum numbers of a 4d electron is

12 / 50

How many exchanges are possible for the d electrons present in vanadium [atomic no. 23] atom?

13 / 50

Which of the following has a maximum number of unpaired electrons?

  1. Ca
  2. Cs-
  3. Fe2+
  4. Zn2+

14 / 50

Which is correct regarding wavefunction for 2p-orbital and distance from the nucleus?

15 / 50

The energy of a photon is 2 x 10-15 x J Its wavelength will be nearly equal to

  1. 100Å
  2. 10Å
  3. 1000Å

16 / 50

At low pressure there is enough space between gaseous atoms of He so that ions can accelerate to such a high speed that when they strike another atom it can eject electrons of it, creating more

17 / 50

A light of frequency 1016 Hz is irradiated on a metal surface with threshold frequency equal to 5 x 1015 Hz What would be the maximum kinetic energy of photoelectrons emitted?

  1. 3.313 x 10-15  J
  2. 3.313 x 10-18  J
  3. 1.02 x 1016  J
  4. 4.316 x 10-18  J

18 / 50

An electron is moving in nth orbit of radius 2.3758Å in He+ ion. Energy required to remove electron from this orbit of He+ is

19 / 50

Which of the following is correct?

20 / 50

Maximum number of spectral lines possible if electron is present in 4th shell and only two atoms are present in sample would be

21 / 50

Splitting of a spectral line in presence of magnetic field is known as

22 / 50

How many electrons in Argon atom have ml =1

23 / 50

How many electrons in sodium atom have ml = 0?

24 / 50

Which one of the following sets is correct?

25 / 50

Possible ways of exchange for d5 is

26 / 50

This graph is for

27 / 50

The magnetic moment of an ion M3+ is 5.92BM. The number of electrons in the d-orbital of M will be

28 / 50

A metal surface in 2 experiments is irradiated by 2-radiations of frequencies v1 and v2. If v1 = 2v2 then what is the correct relationship between the work function of metal in both experiments?

  1. hv01 > hv02
  2. hv01 < hv02
  3. hv01 = hv02
  4. Both (1) & (2)

29 / 50

The wave number of a spectral line in the emission spectrum of Hydrogen will be equal to 8/9 times the Rydberg's constant if the electron jumps from

30 / 50

In an atom, an e- is moving with a speed of 600 ms- with an accuracy of 0.005%. Certainly with which the position of e- can be located is

  1. 1.52 x 10-4 m
  2. 5.10 x 10-3 m
  3. 1.92 x 10-3 m
  4. 3.84 x 10-3 m

31 / 50

If de-Broglie λ of a particle of mass m is 100 times Its velocity, then the value of λ in terms of mass (m and h  is

32 / 50

Which of the following electronic configurations for 26Fe is violating Hund's rule?

33 / 50

When the light of frequency 2×1016 Hz is irradiated on a metal surface with the work function of 57.514x10-19J, what will be its kinetic energy?

  1. 10-16 J
  2. 7.5×10-18 J
  3. 8.5×10-18 J
  4. 300×10-5 J

34 / 50

Which of the following equations is in accordance with de Broglie's hypothesis?

35 / 50

For which orbital it could not be the Radial distribution function?

36 / 50

Magnetic moment of Fe3+ is

37 / 50

The number of spectral lines obtained in the visible region when electrons de-excite from the 4th shell to the ground shell of hydrogen are:

38 / 50

Which of the following set of quantum numbers has maximum energy?

39 / 50

If E1, E2, E3 and E4 are the energy of the first, second third and fourth orbit of the H-atom respectively, then. The correct order of energy difference is

  1. E3 - E2 > E4 - E3 > E2 - E
  2. E2 - E1 > E3 - E2 > E4 - E3
  3. E4 - E3 > E3 - E2 > E2 - E1
  4. E4 - E3 > E2 - E1 > E3 - E2

40 / 50

Electrons are emitted from a metal surface with zero velocity when it is exposed to radiation of wavelength 6000 Å. The threshold frequency of metal is

  1. 5 x 10-19 s-1
  2. 5 x 1014 s-1
  3. 5 x 1015 s-1
  4. 5.84 x 105 s-1

41 / 50

The total number of exchanges possible in d-electrons of chromium (Atomic number = 24) is

42 / 50

If the wave number of the spectral line associated with a particular transition in the H-atom is X cm-1, then what will be the wave number for the same transition in He+ and Li2+?

43 / 50

If the sample contains only 1H atom in the M shell on de-excitation to the ground state it can give maximum spectral lines

44 / 50

If r is the radius of first Bohr's orbit of He+, the radius of nth Bohr's orbit of He+ will be

45 / 50

Which of the statements about quantum numbers is wrong?

46 / 50

Correct statement regarding uncertainty principle

47 / 50

Which of the following orbitals has two spherical nodes?

48 / 50

The maximum number of electrons, that can be present in a d-orbital is

49 / 50

The total number of orbitals in any shell is given by

  1. n
  2. n2
  3. 2n2
  4. 2l + 1

50 / 50

Which of the following quantities are quantized for an electron in an atom, according to Bohr's model

Your score is

The average score is 12%

0%

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top