In simple cube one atom or molecule lies at its______________________?

Related Mcqs:

1. A body is moving with uniform velocity. Its______________________?

   A. speed changes
   B. acceleration changes
   C. direction of motion changes
   D. displacement from origin changes

2. A cube of side 5 cm has a charge of 6 C. The surface density of charge is_________?

   A. 100 C m^–2
   B. 200 C m^–2
   C. 300 C m^–2
   D. 400 C m^–2

   Submitted by: Tauseef Ali

3. Formation of large molecule by joining small molecules is_________________?

   A. Fusion
   B. Polymerization
   C. Crystallization
   D. Subtraction

4. Average translational kinetic energy per molecule of an ideal gas is given by_____________?

   A. 3NaT/2R
   B. 2NaT/3
   C. 3RT/2Na
   D. 3Na/2RT

5. The energy liberated when one atom of U-235 undergoes fission reaction is________________?

   A. 200MeV
   B. 40MeV
   C. 30MeV
   D. 20MeV

6. The diameter of an atom is approximately_______________?

   A. 10-12m
   B. 10-11m
   C. 10-10m
   D. 10-14m

7. During an encounter with an atom alpha particle knocks out ______________?

   A. Protons
   B. Electrons
   C. Neutrons
   D. Nothing

8. Hydrogen atom does not emit X-rays because _________________?

   A. its energy levels are too close to each other
   B. its energy levels are too far apart
   C. it is too small in size
   D. it has a single electron

9. Ground state energy of the 4th orbit in a H-atom is_____________?

   A. 13.60 eV
   B. 3.40 eV
   C. 0.85 eV
   D. 1.51 eV

10. In an electronic transition atom cannot emit______________?

    A. γ-rays
    B. Infra red radiation
    C. Visible light
    D. Ultraviolet rays