Eamcet - Chemistry - Atomic Structure Test

Test Instructions :

1. The Test is 1hr duration.
2. The Test Paper consists of 30 questions. The maximum marks are 30.
3. All the questions are multiple choice question type with three options for each question.
4. Out of the three options given for each question, only one option is the correct answer.
5. Each question is allotted 1 mark for each correct response.
6. 0.25 will be deducted for incorrect response of each question.
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The atomic numbers of elements X, Y and Z are 19, 21 and 25 respectively. The number of electrons present in the M shell of these elements follow the order

  

  

  

  

Which of the following elements has least number of electrons in its M shell ?

  

  

  

  

When the same amount of zinc is treated with excess of H2SO4 and with excess NaOH, the ratio of the volume of H2 evolved is

  

  

  

  

Which of the following pair of ions have same paramagnetic moment

  

  

  

  

Which of the following pair of transition metal ions, have the same calculated values of magnetic moment

  

  

  

  

The maximum number of sub-levels, orbitals and electrons in N shell of an atom are respectively

  

  

  

  

The wavelengths of electron waves in two orbits is 3 : 5. The ratio of kinetic energy of electrons will be

  

  

  

  

Which one of the following sets correctly represent the increase in the paramagnetic property of the ions

  

  

  

  

What is the correct order of spin only magnetic moment (in BM) of Mn2+, Cr2+ and V2+ ?

  

  

  

  

Electrons with a kinetic energy of 6.023 x 104 J/mol are evolved from a surface of a metal, when it is exposed to radiation of wavelength of 600 nm, The minimum amount of energy required to remove an electron from the metal atom is

  

  

  

  

The energy of a photon is 3 x 10-12 ergs.What is its wavelength in nm ?( h = 6.62 x 10 -27ergs-s ; c = 3 x 10 10 cm/s )

  

  

  

  

The wavelength of a spectral line emitted by hydrogen atom in the Lyman series is (16/15)hr cm  .What is the value of n2   (R= Rydberg Constant)

  

  

  

  

How many electrons are present in the M shell of an atom of an clement with atomicnumber 24 (Z = 24) ?

  

  

  

  

5.85 gms of NaCl (Mol. wt. 58.5) is dissolved in water and the solution made up to 500ml; the molarity of the solution will be

  

  

  

  

In photoelectric effect, if the energy required to overcome the attractive forces on the electron,(work functions) of Li, Na and Rb are 2.41eV, 2.30eV and 2.09eV respectively, the work function of ‘K’ could approximately be in eV

  

  

  

  

The gas that is used for sterilizing water is

  

  

  

  

An electron is moving in Bohr's fourth orbit. Its de-Broglie wave length is X. What is the circumference of the fourth orbit

  

  

  

  

The quantum number which explains the line spectra observed as doublets in case of hydrogen and alkali metals and doublets and triplets in case of alkaline earth metals is

  

  

  

  

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