Part- A: I. Answer All The Questions. Each Question Carries 1 Mark. 10 × 1 = 10 1. What is the effect of temperature on molality of a solution? 2. How does the size of blood cell changes when placed in an aqueous solution containing less than 0.9% (m/v) sodium chloride? 3. The resistance of a conductivity cell containing 0.001M KCl solution at 298K is 1500O. What is the cell constant if conductivity of 0.001M KCl solution at 298K is 0.146 x 10-3 Scm-1 ? 4. Give an example for pseudo first order reaction. 5. What is adsorption isotherm? 6. Noble gases have large positive values of electon gain enthalpy. Why? 7. Complete the following equation 8. Give an example for geminal halide. 9. Which type of Aldehydes does not undergo Cannizzaro’s reaction? 10. What are nucleotides?
Part- B II. Answer Any Five Of The Following. Each Question Carries 2 Marks. 5×2= 10 11. Give any two differences between amorphous and crystalline solids. 12. Write the overall cell reaction during the working of Daniel cell. 13. For the reaction R -> P, the concentration of reactant changes from 0.03M to 0.02M in 25 min. Calculate the average rate of reaction in seconds. 14. How will you account for the following? i) Zr and Hf sizes are almost same. ii) What is the composition of mischmetal.. 15. Explain Friedel-Crafts acylation with equation by taking chlorobenzene as example. 16. Explain Kolbe’s reaction. 17. Give the preparation of phenol from cumene. 18. Explain carbylamine reaction with an example.
Part- C: III. Answer Any Five Of The Following. Each Question Carries 3Marks. 5×3= 15 19. Discuss the principle involved in the manufacture of ammonia by Haber’s process along with the chemical equation. 3 20. Give any three reasons for the anomalous behavior of oxygen. 3 21. i) What is aqua regia? ii) Write the structure of chlorous acid. iii) Complete the equation: Br2 + 5F2(excess) ? _______ 1+1+1 22. i) Many copper(I) compounds are unstable in aqueous solution and undergo disproportionation. Explain. ii) What are interstitial compounds? 2+1 23. a) Write general valence shell electronic configuration of d-block elements. b) d-Block elements act as good catalysts. Give any two reasons. 1+2 24. Give any three postulates of Werner’s theory of coordination compounds 25. Based on VBT, explain the formation of [Ni(CN)4]2- 26. i) Write the structure of decacarbonyldimanganese(0), Mn2(CO)10. ii) What are homoleptic complexes? Give an example.
