1. AMU PAST PAPERSCHEMISTRY- UNSOLVED PAPER - 1998

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 iscorrect. Indicate you choice of the correct answer for each part in your answer-book bywriting the letter (a), (b), (c) or (d) whichever is appropriate 3. 01 Problem Sodalime is a. NaH + Na2CO3 b. NaOH + CaO c. NaOH + NaHCO3 d. Na2CO3 + CaO 4. 02 Problem White lead is : a. Carbonate of lead b. Oxide of lead c. Basic carbonate of lead d. Basic sulphate of lead 5. 03 Problem AlCl3 fumes in moist air because : a. HCl is formed in moist air b. It is highly hygroscopic c. It is very volatile d. It is covalent 6. 04 Problem Calcium is obtained by : a. Reduction of CaCl2 with carbon b. Roasting of limestone c. Electrolysis of molten CaCl2 d. Electrolysis of solution of CaCl2 in water 7. 05 Problem Brown ring test is for : a. Nitrate b. Sulphate c. Halide d. Sophie 8. 06 Problem Sodium thiosulphate is used in photography because of its : a. Complex forming behavior b. Reducing behaviour c. Reaction with light d. Oxidizing behaviour 9. 07 Problem A characteristic feature of transition elements is ; a. They do not from complex ions b. They show variable oxidation states c. They show inert pair effect d. They all exhibit diamagnetism 10. 08 Problem H2O2 reduces K2Fe(CN)6 in : a. Alkaline medium b. Neutral solution c. Non-polar medium d. Acidic solution 11. 09 Problem H2O2 oxidises H2S to : a. H2S2O8 b. H2SO5 c. H2SO4 d. S 12. 10 Problem Atomic radii of fluorine and neon in angstron units are respectively given by : a. 0.72, 0.82 b. 0.72, 1.60 c. 0.72, 0.72 d. 1.60, 1.60 13. 11 Problem Which of the following elements exhibits variable oxidation states ? a. Zn b. Fe c. Al d. Si 14. 12 Problem Most electropositive halogen is : a. Cl b. Br c. I d. F 15. 13 Problem Most of the man made elements occur : a. Among the non-metals b. Among the metalloids c. In the actinides series d. In the lanthanides series 16. 14 Problem The most abundant meatl on the surface of earth is : a. Al b. Hg c. Fe d. Ca 17. 15 Problem Cupellation process is used in the metallurgy of : a. Ag b. Cu c. Fe d. Al 18. 16 Problem Off the following the metal the cannot be obtained by electrolysis of the aqueous solution of their salt is : a. Al b. Mg c. Cu d. Both a and b 19. 17 Problem Polymer of chloroethylene is : a. Teflon b. Nylon c. Terylene d. PVC 20. 18 Problem Primary amines react with benzaldehyde to form : a. Diazonium salts b. Azodyes c. Anilides d. Schiffs base 21. 19 Problem Which of the following is a strong reducing agent ? a. Methanoic acid b. Ethanoic acid c. Chloroacetic acid d. Benzoic acid 22. 20 Problem When ethylene bromide is treated with Zn, we get : a. Alkane b. Alkene c. Alkyne d. None of these 23. 21 Problem Formaldehyde reacts with NH3 to form : a. (CH2)6N6 b. (CH2)6N4 c. (CH2)6N5 d. (CH2)4N6 24. 22 Problem Acetone is easily oxidized with : a. Benedicts solution b. Fehling solution c. Acidic dichromate solution d. Tollens reagent 25. 23 Problem Which of the following is soluble in water ? a. C2H5OH b. CHCl3 c. Cs2 d. CCl4 26. 24 Problem Baeyers reagent is used in the laboratory for? a. Detection of double bond b. Detection of glucose c. Reduction process d. Oxidation process 27. 25 Problem SIDROSIS diseases is caused by excess intake elements which is : a. Mobudium b. Copper c. Zinc d. Iron 28. 26 Problem Graphite is soft because : a. It is back b. It has low density c. It has layer structure d. It has three dimensional structure 29. 27 Problem Mrash gas is : a. Methane b. Ethane c. Ethylene d. Acethylene 30. 28 Problem The reaction, C8H18 C5H12 + C4H10 + C8H16 + represents : a. Catalytic oxidation b. Isomerisation c. Cracking d. Synthesis 31. 29 Problem Polythene is a polymer of : a. C4H10 b. C3H6 c. C2H4 d. C2H2 32. 30 Problem The vitamins present in oils and fats are : a. A and C b. B and C c. A and B d. A and C 33. 31 Problem PVC is : a. Thermoplastic polymer b. Compound polymer c. Thermosetting polymer d. Simple polymer 34. 32 Problem Which element is known as GIRLS BEST FRIEND ? a. Plutonium b. Diamind c. Silver d. Gold 35. 33 Problem Group belong to : a. Aldehyde b. Alcohol c. Ketone d. Acid 36. 34 Problem The acid is used as VINEGAR for preparation of pickles : a. Oxalic acid b. Citraic acid c. Acetic acid d. Formic acid 37. 35 Problem Polmific acid and steric acid are used as : a. Medicine b. Soap c. Anticeptic cream d. Pickle 38. 36 Problem The hardest substance among the following is : a. Graphite b. Anthracite c. Lignite d. Peat 39. 37 Problem Drip-day clothes are made up of : a. Polyster b. Decrone c. Rayon d. Nylon 40. 38 Problem The carbon contents in lamp black is about : a. 98-99% b. 90-955 c. 80-90% d. 10-20% 41. 39 Problem Neoprene is a polymer of : a. 1-bromobutadiene b. 2-chlorobutadiene c. 2-bromobutadiene d. 1-chlorobutadiene 42. 40 Problem Rayon is : a. Synthetic plastic b. Natural rubber c. Natural silk d. Artificial silk 43. 41 Problem The natural cleaning agent are found in river : a. Marine animal b. Plants c. Algae d. Fungi 44. 42 Problem Which of the following is used as a preservative for biological specimens ? a. Acetic acid b. Formic acid c. Formalin d. Liquid NH3 45. 43 Problem Name the compounds which affects the ozone layer : a. Chloro compound b. Fluro compound c. Bromo compound d. Iodo compounds 46. 44 Problem Nitrogen is an essential constituent of all : a. Proteins and fats b. Fats c. Proteins d. None of these 47. 45 Problem Which is the pH value corresponding to iso-electric point of an aqueous solution of glycine : a. pH = 6 b. pH = 0 c. pH = 7 d. pH > 7 48. 46 Problem The main agent for polluting the environment is : a. Gas b. Plant c. Animal d. Man 49. 47 Problem Inosphere is : a. Above ozone layer b. Below ozone layer c. Bleow 15 kg in earth crust d. None of these 50. 48 Problem Molar heat capacity is given by :dQ a. dT b. dQ x Dt1 c.dT1 d. QT 51. 49 Problem The distance between nucleons in atomic nucleus is of the order of (1 F = 10-13 cm) : a. 1000 Fermi b. 200 Fermi c. 50 Fermi d. 2 Fermi 52. 50 Problem Nuclear reactions are balanced in terms of : a. Only mass b. Only energy c. Number of electrons d. Mass and energy 53. FOR SOLUTIONS VISIT WWW.VASISTA.NET