Online MCQ Test for ECAT Chemistry Unit Ch 5

Matric Part 2/10th Class English Chapter 1 MCQ Test With Answer for Chapter 1 Hazrat Muhammad (S.A.W) an Embodiment of Justice

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ECAT Chemistry Chapter 5 Atomic Structure

ECAT Chemistry Chapter 5 Atomic Structure

ECAT Chemistry Chapter 5 Atomic Structure

Smallest charge of electricity that has been measured so far is

The size of electronic shell is described by

Subsidiary quantum number specifies

If the radius of first Bohr orbit be ao, then the radius of third Bohr orbit would be

Splitting of spectral lines of the hydrogen atom under the influence or magnetic field is called

An electron has principal quantum number 3. The number of its 1 subshell and 2 orbitals would be respectively

If the value of principal quantum number is 3. the total possible values for magnetic quantum number will be

What is the packet of energy called?

Mass of simple electron is:

The configuration 1s22s22p53s1shows

Find the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25

The value of R (Rydberg's constant) is _______ m-1

In the ground state of an atom the electron is present

E = hv is the

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

The charge of an electron is determined by

When electrons revolve in stationary orbits

Rutherford's atomic model suggests the existence of

Sodium chloride imparts a yellow colour to the Bunsen flame. This can be interpreted due to the

The electronic configuration of an atom/ion can be defined by the following

Charge of an electron is:

Orbitals having same energy are called

When 6s orbital is complete then next electron goes to

When cathode rays strike the anode metal X-rays are emitted and not the positive rays because

Which of the following was discovered first:

The velocity of photon is:

When 6d orbital is complete, the entering electron goes into:

In Bohr model of hydrogen atom the distance between adjacent orbits increases away from the nucleus, the energy difference between the orbits

Light emitted from a source has its wave length 500nm, then its wave number will be

The number of neutrons in the element 94Be is

Matric Part 2/10th Class English Chapter 1 MCQ Test With Answer for Chapter 1 Hazrat Muhammad (S.A.W) an Embodiment of Justice

Biology Chapter 1 - Answers Mode

Biology Chapter 1 MCQ - PDF

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If the radius of first Bohr orbit be a_o, then the radius of third Bohr orbit would be

The configuration 1s²2s²2p⁵3s¹shows

The number of neutrons in the element ⁹₄Be is