ECAT Pre Engineering Chemistry Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 5 Atomic Structure

Try The MCQ's Test For ECAT Chemistry Chapter 5 Atomic Structure

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Chemistry Chapter 5 Atomic Structure

00:00
Question # 1

The order of frequency of the following radiations unltraviolet, visible, infrared and microwave is

Question # 2

In Millikan method for determination of charge on electron the air in the chamber is ionized by

Question # 3

The charge of an electron is determined by

Question # 4

Electrons in degenerate orbitals are placed in separate orbitals with same spin according to

Question # 5

The total number of orbitals possible for the quantum number n is

Question # 6

Splitting of spectral lines when atoms are subjected to strong electric field is called:

Question # 7

The e.m value for positive rays maximum for:

Question # 8

Maximum potential energy that an electron can have within the atom is:

Question # 9

The total values of magnetic quantum number of subshell are five, the subshell is

Question # 10

Which of the following orbitals have a dumb bell shape?

Question # 11

The number of electrons in the M shell of the element with atomic number 24 is

Question # 12

For which of the following sets of quantum numbers and electron will have the highest energy?

Question # 13

Positive particle in discharged tube is produced by ionization of gas molecules, which is caused by

Question # 14

Charge of an electron is:

Question # 15

The energy of ionization of an atom is the energy difference between orbital

Question # 16

The wave number of the light emitted by a certain source is 2 x 106m-1. The wavelength of this light will be

Question # 17

The value of charge on electron is

Question # 18

The degenerate orbitals p-sub shell are

Question # 19

In the ground state of an atom the electron is present

Question # 20

The nature of the positive rays depend on

Question # 21

The limiting line of Blamer series in hydrogen spectrum lies in

Question # 22

Cathode rays drive a small paddle wheel placed in their path. This observation shows that

Question # 23

The radius of second Bohr's orbit is

Question # 24

The radiations with wavelength shorter than violet light are called

Question # 25

Consider the ground state of Cr atom (Z=24). The numbers of electrons with the azimuthal quantum numbers l = 1 and l = 2 are respectively

Question # 26

Spectrum of white light is continuous becuase

Question # 27

Azimuthal quantum number of last electron of 11Na is

Question # 28

The quantum number which describes the shape of the orbital is

Question # 29

Quantum number value for 2p orbitals are:

Question # 30

Cathode rays emitted from cathode are

Submit

Prepare Complete Set Wise ECAT Chemistry Chapter 5 Atomic Structure MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Chemistry Chapter 5 Atomic Structure MCQ`s Test

  • M
    M Umer Arain 03 - Nov - 2024 00 Min 13 Sec 105/120
  • S
    Shazi Ansari 05 - Jun - 2024 01 Min 53 Sec 100/120
  • R
    rubina kousar 04 - Jun - 2024 09 Min 02 Sec 90/120
  • S
    Sarab Ali 01 - Jun - 2024 21 Min 54 Sec 90/120
  • R
    rehan sanaullah 06 - Jun - 2024 05 Min 02 Sec 80/120
  • A
    Abdullah Zubair 21 - Dec - 2024 07 Min 00 Sec 80/120
  • F
    Fatima Tabassum 15 - Jan - 2025 04 Min 08 Sec 75/120
  • M
    Madankalani Kalani 16 - Aug - 2024 19 Min 51 Sec 75/120
  • K
    Khalida Amjad 07 - Nov - 2024 13 Min 56 Sec 65/120
  • A
    affan mirza 03 - Jun - 2024 09 Min 39 Sec 60/120
  • M
    Muhammad Emmad 07 - Jun - 2024 14 Min 12 Sec 60/120
  • N
    Nayab Khan 17 - Aug - 2024 19 Min 35 Sec 60/120
  • M
    muhammad aftab 27 - Mar - 2026 24 Min 06 Sec 60/120
  • F
    Furqan Asif 06 - Mar - 2026 44 Min 40 Sec 56/120
  • A
    Abdul Rafay 17 - Oct - 2024 08 Min 05 Sec 55/120

ECAT Chemistry Chapter 5 Important MCQ's

Sr.# Question Answer
1 E = hv is the
A. Spectral equation
B. Plank's equation
C. de Broglie's equation
D. None of these
2 The quantum number which determines the shape of the orbital is
A. principal
B. azimuthal
C. magnetic
D. spin
3 Subsidiary quantum number specifies
A. size of orbital
B. shape of orbital
C. orientations of orbitals
D. Nuclear stability
4 Splitting of spectral lines when atoms are subjected to strong electric field is called:
A. Zeeman effect.
B. Stark effect
C. Photoelectric effect.
D. Compton effect.
5 The value of R (Rydberg's constant) is _______ m-1
A. 1.0974 x 107
B. 1.0842 x 107
C. 1.082 x 10-7
D. Both a and b
6 The arrangement of subshells in the ascending order of their energy on complete filing of 4f subshell the entering electrons goes to
A. 5s
B. 5p
C. 5d
D. 5f
7 No cathode rays are produced in the discharged tube when gas is under ordinary pressure even if voltage of 5000 to 10000 is applies. This reason is
A. Voltage is low
B. Discharge tube is not coloured
C. Gas does not conduct current under ordinary pressure
D. Temperature low
8 Charge to mass ratio of electron was discovered by:
A. Millika.
B. Rutherford.
C. J.J. Thomson.
D. Chadwick.
9 Neutrons was discovered by
A. Mosely
B. Milliken
C. Chadwick
D. Ruherford
10 Quantum number value for 2p orbitals are:
A. n=2 ,l=1
B. n=1 ,l=2
C. n= ,l=0
D. n=2 ,l=0

Test Questions

Is this page helpful?