1. AMU PAST PAPERSCHEMISTRY- UNSOLVED PAPER - 1997

2. SECTION I 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

3. 01 Problem Which acts both as oxidizing as well as reducing agent? a. HNO3 b. HNO2 c. HCI d. H2SO4

4. 02 Problem Which one the following compounds can form hydrogen bond? a. CHCI3 b. NaCI c. H2O d. CH4

5. 03 Problem NH3 gas is dried over: a. P2O5 b. Anhydrous CaCI2 c. Conc. H2SO4 d. Quick lime

6. 04 Problem The normality of a 2.3 M sulphuric acid solution is : a. 4.6 N b. 2.3 N c. 0.23 N d. 0.46 N

7. 05 Problem The oxide of lead used in lead accumulators is : a. PbO2 b. Pb3O4 c. Pb2O3 d. PbO

8. 06 Problem Epsom salt is : a. MgSO4.7H2O b. MgSO4.H2O c. BaSO4.2H2O d. CaSO4.H2O

9. 07 Problem Amongst the following hydroxide the one which has the lowest value of KSP at ordinary temperature is: a. Be(OH)2 b. Ba(OH)2 c. Ca(OH)2 d. Mg(OH)2

10. 08 Problem In the manufacture of caustic soda from brine, one of the important by product is : a. Na2CO3 b. K2CO3 c. KOH d. CI2

11. 09 Problem Which among the following is least stable and decomposes more readily? a. LiCO3 b. Na2CO3 c. Cs2O3 d. K2CO3

12. 10 Problem The species that do not contain peroxide ions are : a. H2SO2 b. BaO2 c. PbO2 d. SrO2

13. 11 Problem When zeolite which is hydrated sodium aluminium silicate, is treated with hard water. The Na+ ions are exchanged with ? a. Ca2+ ions b. Mg2+ ions c. Both Ca2+ and Mg2+ ions d. H+ ions

14. 12 Problem The property of pulling of electrons by an elements in a bond is called: a. Electro negativity b. Electrometric effect c. Inductive effect d. None these

15. 13 Problem Which of the following order of ionization energy is correct? a. BB>C>N>O c. B

16. 14 Problem The element with highest ionization potential is: a. Nitrogen b. Oxygen c. Boron d. Carbon

17. 15 Problem How many number of molecules are present in 3.6 gm of water? a. 1.2x1023 b. 6x1023 c. 6x1022 d. 6x1024

18. 16 Problem When ore limes stone in heated carbon dioxide s given off this operation in metallurgy is known as? a. Calcinations b. Roasting c. Ore-dressing d. Smelting

19. 17 Problem Which will show highest lattice energy? a. KF b. NaF c. CaF d. PbF

20. 18 Problem PVC is a polymer of : a. CH 2 = CHCL b. Cl-C = C-Cl c. ClCH2 CHCl d. CH2 = CH2

21. 19 Problem Ethylamine reacts with HNO2 giving a. C2H5OH b. C2H5NO2 c. NH3 d. C2H6

22. 20 Problem Which of the following will give a primary amine of hydrolysis? a. Nitroparaffin b. Alkyl isocyanide c. Alkyl cyanide d. Oxide

23. 21 Problem Benzene reacts with CH3COCI to give : a. Benzyl chloride b. Acetophenone c. Chlorobenzene d. Toluene

24. 22 Problem Which of the following has the maximum acidic strength ? a. p- nitrophenol b. p- nitrobenzoic acid c. o- nitrobenzoic acid d. m- nitrobenzoic

25. 23 Problem CH3CH = CHCHO is oxidized to CH2CH = CHCOOH using : a. Selenium dioxide b. Ammoniac AgNO3 c. Alkaline KMnO4 d. All of these

26. 24 Problem The reagent with which both acctaldehyde and acetone react easily is : a. Tollers reagent b. Schiffs reagent c. Grignard reagent d. Fehling solution

27. 25 Problem An example of a covalent crystalline solid is : a. Si b. Al c. NaF d. Ar

28. 26 Problem Red lead is : a. Pb3O4 b. Pb2O3 c. Pb2O d. PbO

29. 27 Problem Which of the following reacts with water with high rate? a. Cs b. Ba c. K d. Li

30. 28 Problem Which of the following oxide is a true acidic anhydride? a. N2O5 b. NO c. CO d. CLO2

31. 29 Problem Which of the following is diamagnetic ion? a. Co2+ b. Cr3+ c. V3+ d. Ti4+

32. 30 Problem A considerable part of the harmful ultra violet radiation of the sun does not reach the surface of the earth. This is because high above the earths atmosphere there is a layer of: a. H2 b. NH3 c. O2 d. CO2

33. 31 Problem Acidified solution of K2Cr2O7 on treatment with H2O2 gives: a. H2Cr2O7+H2O+O2 b. CrO+H2O c. Cr2O3+H2O+O2 d. Cr3O3+H2O+O2

34. 32 Problem Which of the following elements extracted commercially by the electrolysis of an aqueous solution of one of its compound? a. CI2 b. Br2 c. I2 d. Na

35. 33 Problem Chlorine reacts with NaOH under various conditions to give: a. NaCIO3 b. NaCIO c. NaCI d. All of these

36. 34 Problem The noble gas forming the maximum number of compound is: a. He b. Xe c. Ar d. Ne

37. 35 Problem Hard steel contains: a. 0.6-1.5% carbon b. 0.5-0.2% carbon c. 5% carbon d. No carbon

38. 36 Problem Smelting is carried out in: a. Electric furnace b. Blast furnace c. Open hearth furnace d. Mule furnace

39. 37 Problem Nobel gas used in radiotherapy is : a. Ar b. Kr c. Xe d. Rn

40. 38 Problem Which one of the following turns potassium dichromatic paper green? a. NO2 b. HCI c. NH3 d. SO2

41. 39 Problem When an aqueous solution containing sodium acetate and sodium propionate is electrolyzed we get: a. Butane b. Propane c. Ethane d. All of these

42. 40 Problem The number of isomers of C6H14 are a. 7 b. 6 c. 5 d. 4

43. 41 Problem The gas evolved when Pb(NO3)2 is heated is : a. N2O5 b. N2O c. NO2 d. NO

44. 42 Problem Ozonolysis of fatty acids is a technique used for determining: a. Number of oh group b. Number of cooh group c. Position of double bond d. Position of carbonyl group

45. 43 Problem An organic compound containing C, H and N gave the following analysis C=40%, H=13,33%, N=46.67%. What would be its empirical formula: a. C2H7N2 b. C2H7N c. CH5N d. CH4N

46. 44 Problem Number of enantiomers of the compound CH3CHBrCHBrCOOH is: a. 4 b. 3 c. 1 d. 0

47. 45 Problem Iodiform is formed in warming I2 and NaOH with: a. CH3COOH b. C2H5OH c. CH3OH d. HCOOH

48. 46 Problem Which of the following groups has highest inductive effect? a. (CH3)3C- b. (CH3)2CH- c. CH3CH2- d. CH3-

49. 47 Problem The order of stability of carbonions is: a. 20>3010>CH3 b. 30>10 >20>CH3 c. 30>2010>CH3 d. CH3 10>20>30

50. 48 Problem Isopreric substances are used for making : a. Liquid fuel b. Petrol c. Rubber d. Propane

51. 49 Problem Vitamin A is present in: a. Green vegetables b. Liver c. Milk d. All of these

52. 50 Problem Which of example of SN2 reaction? a. b. c. d.

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