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CBSE Guess > Papers > Question Papers > Class XII > 2003 > Chemistry > Outside Delhi Set -II.

CHEMISTRY—2003 (Set II—Outside Delhi)

Note: Except for the following questions, all the remaining questions have been asked in Set I .

Q. 1. Write the composition of double-base propellant. 1

Q. 2. What is meant by inversion of sugar? 1

Q. 9. Name the radio active series which starts from Plutonium -241 and terminates at Bismuth-209. 1

Q. 10. Write a neutral molecule in which the central atom is sp hybridized. 1

Q. 13. What is meant by specific conductivity of a solution?
The specific conductance of a 0.12 N solution of an electrolyte is 2.4 x 10 -2 S cm -1 . Calculate its equivalent conductance. 2

Q. 20. Write equations for the synthesis of the following: 2
(i) Glyptal
(ii) Neoprene

Q. 25. Illustrate the following with an example of reaction: 2
(i) Ambident nucleophile
(ii) Hinsberg test

Q. 27. Give appropriate reason for each of the following observations: 3
(i) Only higher members of Group 18 of the periodic table are expected to form compounds.
(ii) Fluorine is a stronger oxidising agent than chlorine, though fluorine has lower electron affinity than chlorine.
(ii) NO 2 readily forms a dimer, whereas CIO 2 does not.

Q. 28. Complete the following reactions: 3

(i) CH 3 - CH - CH 3 + PCI 5 -->


                    CH 3
(iii) CH 3 - C - X + NaOH -->
                  CH 3

Q. 29. What is meant by Vant's Hoff factor?
The osmotic pressure of a 0.0103 molar solution of an electrolyte is found to be 0.70 atm at 27 0 C. Calculate the Van't Hoff factor.
[R = 0.082 L atm-mol -1 K -1]
What conclusion do you draw about the molecular state of the solute in the solution?

Q. 32. Explain what is meant by dual nature of a particle in motion.
Show that the wavelength of a moving particle is related to its kinetic energy (E) as

Chemistry 2003 Question Papers Class XII
Delhi Outside Delhi Compartment Delhi Compartment Outside Delhi
Indian Colleges Set I Indian Colleges Set I Indian Colleges Set I Indian Colleges Set I
Indian Colleges Set II Indian Colleges Set II Indian Colleges Set II Indian Colleges Set II