CBSE Important Questions

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Atomic Structure and Chemical Bonding

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  1. Particles A & B are in motion. If the wavelength associated with particle A is 5 x 10-8m. Calculate the wavelength associated with particle B if its momentum is half of A
  2. Calculate the wavelength of 1000Kg rocket moving with a velocity of 3000 km/hr. (h = 6.626 x 10-34Js)
  3. Calculate the uncertainty in velocity of a wagon of mass 2000kg whose position is known to accuracy 10m
  4. What is the physical meaning of |x2|?
  5. What do you understand by?
    (a) Radial probability density (R2)
    (b) Radial probability function 4pr2R2.
    How do they vary with r for 1s, 2s and 2p atomic orbital of Hydrogen atom?
  6. Explain why bond order of N2 is greater than bond order of N2+, but the bond order of O2 is than that of O2+
  7. What is the energy gap in the Band theory? Compare it’s size in conductors, semi-conductors and insulators
  8. Which of the following substances exhibit hydrogen bonding?
    (a) CH3CH2OH
    (b) CH3CO-OH
    (c) CH3-CO-CH3
    (d) CH3-CO-NH2
  1. Atomic Structure and Chemical Bonding
  2. Solid States
  3. Solutions
  4. Thermodoynamics
  5. Chemical Kinetics
  6. Nuclear Chemistry
  7. Polymers
  8. Biomolecules
  9. Chemistry In Every Day Life

 

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