1. This document contains an unsolved chemistry exam from 2004 containing 50 multiple choice questions covering various chemistry topics.
2. The questions cover subjects like chemical reactions, properties of elements, organic chemistry compounds, and gas laws.
3. Answers are indicated by choosing the corresponding letter (a, b, c, or d) for each question in the answer book.
2. SECTION – I (Total Marks :50) Single Correct Answer Type There are five parts in this question. Four choices are given for each part and one of them is correct. Indicate you choice of the correct answer for each part in your answer-book by writing the letter (a), (b), (c) or (d) whichever is appropriate
4. Problem 02 Which of the following yield both alkane and alkene? Kolbe's reaction Williamson's synthesis Wurtz reaction Sandmeyer reaction
5. Problem 03 Bessemer converter is used for steel wrought iron pig iron cast iron
6. Problem 04 Lanthanides and actinides resemble in electronic configuration oxidation state ionization energy formation of complexes
7. Problem 05 Mg and Li are similar in their properties due to same elm ratio same electron affinity same group same ionic potential
8. Problem 06 How will you separate mixture of two gases? fractional distillation technique Grahams law of diffusion technique osmosis chromatography
9. Problem 07 Which of these have no unit? electronegativity electron affinity ionisation energy excitation potential
10. Problem 08 The addition of unsymmetrica! reagents to unsymmetrical alkenes occurs in such a way that the negative part of the addendum goes to that carbon atom of the double bond which carries lesser number of hydrogen atoms" is called by Saytzeff rule Markownikoff's rule Kharasch effect Anti-Saytzeff rule
11. Problem 09 The molecule of CO2 has angle 180°. It can be explained on the basis of sp3hybridisation sp2hybridisation sp hybridisation d2Sp3hybridisation
12. Problem 10 Fusion bomb involves combination of lighter nuclei into bigger nucleus destruction of heavy nucleus into smaller nuclei combustion of oxygen explosion of TNT.
13. Problem 11 Which of the following gas mixture is used by the divers inside the sea? O2 + He O2 + Xe O2 + Ar O2 + N2
32. Problem 30 Which of the following can't be used in Friedal- Craft's reactions? FeCl3 FeBr2 A1C13 NaCl
33. Problem 31 Lapis lazuli is ferrous sulphate copper sulphate sodium alumino silicate zinc sulphate
34. Problem 32 "Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute". Above statement is Henry law Dulong and Petit law Raoult's law Le-Chatelier's principle
35. Problem 33 Bohr's theory was modified to give the concept of elliptical orbits by Davison Rutherford Hund Sommerfeld
36. Problem 34 Which of the following metal has stable carbonates? Na Mg A1 Si
37. Problem 35 What is the net charge on ferrous ion? +2 +3 +4 +5.
39. Problem 37 Internal energy is partly potential and partly kinetic totally kinetic totally potential none of these
40. Problem 38 Breeding arc method cannot be used to prepare colloidal solution of which of the following? Pt Fe Ag Au
41. Problem 39 Which of the following oxides of nitrogen is solid? NO2 N2O N2O3 N2O5
42. Problem 40 Containers A and B have same gases. Pressure, volume and temperature of A are all twice that of B, then the ratio of number of molecules of A and B are 1 : 2 2 1 : 4 4
43. Problem 41 The ratio of area covered by second orbital to the first orbital is 1 : 2 1 : 16 8 : 1 16 : 1.
44. Problem 42 Among them intensive property is mass volume surface tension enthalpy
45. Problem 43 Stainless steel is an alloy of iron and copper nickel and chromium manganese zinc
46. Problem 44 Orion has a unit vinyl cyanide caroling glycol two dimensional
47. Problem 45 Structure of H2O2 is planar non-planar (three dimensional') linear two dimensional