Visitors Online: 77 | Tuesday 21st May 2019
REGISTRATION
Online Fashion Store

CBSE Important Questions

CBSE Guess > Papers > Important Questions > Class XII > 2007 > Chemistry > Practice Paper 1

Practice Paper 1

Previous Index Next

INSTRUCTION :

QUES. NO. 1 - 8 CARRIES 1 MARKS

QUES. NO. 9-11 CARRIES 2 MARKS

QUES. NO. 12-13 CARRIES 3 MARKS

QUES. NO. 14 CARRIES 5 MARKS

  1. What is an orbital in an atom?
  2. What type of hybridization explains the trigonal bipyramidal shape of SF4
  3. State deBroglie principle?
  4. Which point defect lowers the density of ionic crystals?
  5. Why is Frenkel defect found in AgCl ?
  6. Which type of crystals exhibit piezo-electricity?
  7. Explain the term mole fraction?
  8. Why is benzene insoluble in water but soluble in toluene?
  9. Calculate molarity and molality of a 13% solution of sulphuric acid? Its density is 1.020 gram / cm3 [Atomic mass H=1, O=16, S=32a.m.u.]
  10. KX crystals have FCC structure. What is the distance between K+and X_ in a KX crystals if the density of KX is 2.48 g/cm_3
  11. With the help of molecular orbital diagram show that Ne2 can not exist as a stable molecule?
  12. The ionization energy of sodium is 494.7 kj/mole calculate the wavelength of the electromagnetic radiation, which is just sufficient to ionize the Na atom.
  13. An element of atomic mass 98.5 gm/mole occurs in FCC structure if its unit cell edge length is 500 pm and its density is 5.22 gm/cc what will be the value of Avogadro constant.
  14. Explain the difference between the osmotic pressure and vapor pressure in a solution. Calculate the osmotic pressure and vapor pressure of 0.6% aqueous solution of non volatile, non electrolyte solute, urea at 25 C the vapor pressure of pure water at 25 C is 24 mm of Hg take densities to be 1 gm/ml and assume ideal solutions behavior
  1. Solid State
  2. Solutions
  3. Electrochemistry
  4. Chemical Kinetics
  5. P Blocks Element
  6. D and F Block Elements
  7. Coordination Compound
  8. Nuclear Chemistry
  9. Stereochemistry
  10. Functional Group I
  11. Polymers
  12. Biomolecules
  13. Chemistry In Everyday Life
  14. Practice Paper 1
  15. Practice Paper 2
  16. Practice Paper 3

 

Previous Index Next