IIT JEE –PAST PAPER<br />CHEMISTRY- UNSOLVED PAPER – 1983<br />
SECTION – I<br />Single Correct Answer Type<br />This section contains 20 multiple choice questions. Each question has fou...
01<br />Problem<br />The compound 1, 2-butadiene has<br />Only sp hybridized carbon atoms<br />Only           hybridized c...
Problem <br />02<br />Which of the following compounds will exhibit cis-trans (geometrical) isomerism ?<br />2-butene<br /...
Problem<br />03<br />Any p-orbital can accommodate up to<br />Four electrons<br />Two electrons with paralled spins<br />S...
Problem<br />04<br />Carbon tetrachloride has no net dipole moment because of<br />Its planar structure<br />Its regular t...
Problem<br />05<br />Which one among the following does not have the hydrogen bond?<br />heard by the car driver is<br />P...
Problem<br />06<br />The type of bonds present is                       are only<br />Electrovalent and covalent<br />Elec...
Problem<br />07<br />Diethyl ether on heating with Conc. HI gives two moles of heard by the car driver is<br />Ethanol<br ...
Problem<br />08<br />When acetaldehyde is heated with Fehling’s solution it given a precipitate of<br />Cu<br />CuO<br />C...
Problem<br />09<br />The principal quantum number of an atom is related to the<br />Size of the orbital <br />Spin angular...
Problem<br />10<br />Rutherford’s scattering experiment is related to the size of the<br />Nucleus<br />Atom<br />Electron...
Problem<br />11<br />When propyne is treated with aqueous in                presence of                  the major product...
Problem<br />12<br />The Cannizzaro reaction is not given by<br />Trimethylacetaldehyde<br />Bezaldehyde<br />Acetaldehyde...
Problem<br />13<br />Acetamide is treated separately   with the following reagents. Which   one of these would give methyl...
Problem<br />14<br />Which   of the following compounds does not dissolve in Conc. H2SO4 even on warming?<br />Ethylene<br...
Problem<br />15<br />The rate constant of a first order reaction depends on the<br />Concentration of the reactant<br />Co...
Problem<br />16<br />A catalyst is a substance with <br />Increases the equilibrium concentration of the product<br />Chan...
Problem<br />17<br />Heavy water is <br />  a. <br />  b. <br />  c. Water obtained by repeated distillation<br /> d. Wate...
Problem<br />18<br />Chlorine acts as a bleaching agent only in presence of<br />Dray air<br />Moisture<br />Sunlight<br /...
Problem<br />19<br />In the aluminothermy process, aluminum acts as<br />An oxidizing  agent<br />A reducing agent <br />A...
Problem<br />20<br />Faraday’s laws of electrolysis are related to the<br />Atomic number of the action<br />Atomic number...
SECTION – II<br />True or False.<br />State whether the following statements are true or false<br />
01<br />Problem<br />Hydrolysis of an ester in presence of a dilute acid is known as saponification.<br />____________<br />
Problem <br />02<br />Carbon tetrachloride burns in air when lighted to give phosgene. __________ <br />
Problem<br />03<br />The yield of ketone when a secondary alcohol is oxidized is more than the yield of aldehyde when a pr...
Problem<br />04<br />Dilute Hal xoidizes metallic Fe to            ____________  <br />
Problem<br />05<br />Linear overlap of two atomic p-orbitals leads to a sigma bond ____________ .<br />
Problem<br />06<br />Gamma rays are electron in the 3d – orbital is less than that in the 4s-orbital in the hydrogen atom ...
SECTION – III<br />Fill in the banks with appropriate words.<br />Read the following statements carefully. Indicate  the s...
01<br />Problem<br />Acetic acid can be halogenated in the presence of red P and           but formic acid cannot be halog...
Problem <br />02<br />Methane does not react with chlorine in the drak ____________.<br />
Problem<br />03<br />Propene reacts with HBr to give isopropyl bromide but does not give n-propyl bromide _________ .<br />
Problem<br />04<br />Although benzene is highly unsaturated, normally it does not undergo addition reaction ___________.<b...
Problem<br />05<br />A bottle of liquor ammonia should be cooled before opening the stopper __________.<br />
Problem<br />06<br />Sliver bromide is used in photography ___________.<br />
Problem<br />07<br />Solid carbon dioxide is known as dry ice ____________ .<br />
SECTION – V<br />Match the following<br />
01<br />Problem<br />            X				     Y	<br />Decarboxylation 		Addition reaction<br />Ozonolysis			Soda lime<br />Wi...
Problem <br />02<br />Lucas' test		              Phenol<br />Neutral              test	              Phenol<br />Dye test	...
Problem <br />03<br />Al			Clamine<br />Cu		                  Cryolite<br />Mg 			Malachite<br />Zn 			Carnallite<br />
Problem<br />04<br />Haber			Activation energy<br />Graham			Diffusion of gases<br />Arrhenius			Octet rule<br />Lewis 			...
FOR SOLUTION VISIT WWW.VASISTA.NET<br />
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IIT JEE Chemistry 1983

  1. 1. IIT JEE –PAST PAPER<br />CHEMISTRY- UNSOLVED PAPER – 1983<br />
  2. 2. SECTION – I<br />Single Correct Answer Type<br />This section contains 20 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which ONLY ONE is correct.<br />
  3. 3. 01<br />Problem<br />The compound 1, 2-butadiene has<br />Only sp hybridized carbon atoms<br />Only hybridized carbon atoms<br />Both sp and hybridized carbon atoms<br />Sp, and hybridized carbon atoms<br />
  4. 4. Problem <br />02<br />Which of the following compounds will exhibit cis-trans (geometrical) isomerism ?<br />2-butene<br />2-butyne<br />2-butanol<br />But anal<br />
  5. 5. Problem<br />03<br />Any p-orbital can accommodate up to<br />Four electrons<br />Two electrons with paralled spins<br />Six electrons<br />Two electrons with opposite spins<br />
  6. 6. Problem<br />04<br />Carbon tetrachloride has no net dipole moment because of<br />Its planar structure<br />Its regular tetrahedral structure<br />Similar sizes of carbon and chlorine atoms<br />Similar electron affinities of carbon and chlorine<br />
  7. 7. Problem<br />05<br />Which one among the following does not have the hydrogen bond?<br />heard by the car driver is<br />Phenol<br />Liquid<br />Water<br />Liquid HCl<br />
  8. 8. Problem<br />06<br />The type of bonds present is are only<br />Electrovalent and covalent<br />Electrovalent and coordinate covalent<br />Electrovalent, covalent and coordinate covalent<br />Covalent and coordinate covalent <br />
  9. 9. Problem<br />07<br />Diethyl ether on heating with Conc. HI gives two moles of heard by the car driver is<br />Ethanol<br />Ethyl iodide<br />Iodoform<br />Methyl iodide<br />
  10. 10. Problem<br />08<br />When acetaldehyde is heated with Fehling’s solution it given a precipitate of<br />Cu<br />CuO<br />Cu2O<br />Cu + Cu2O + CuO<br />
  11. 11. Problem<br />09<br />The principal quantum number of an atom is related to the<br />Size of the orbital <br />Spin angular momentum<br />Orbital angular momentum<br />Orientation of the orbital in space<br />
  12. 12. Problem<br />10<br />Rutherford’s scattering experiment is related to the size of the<br />Nucleus<br />Atom<br />Electron<br />Neutron<br />
  13. 13. Problem<br />11<br />When propyne is treated with aqueous in presence of the major product is <br />Propanal<br />Acetone<br />Propyl hydrogen sulphate<br />Formaldehyde<br />
  14. 14. Problem<br />12<br />The Cannizzaro reaction is not given by<br />Trimethylacetaldehyde<br />Bezaldehyde<br />Acetaldehyde<br />Formaldehyde<br />
  15. 15. Problem<br />13<br />Acetamide is treated separately with the following reagents. Which one of these would give methylamine?<br />a. <br />b. Soda lime<br />c. NaO<br />d. Hot Conc. <br />
  16. 16. Problem<br />14<br />Which of the following compounds does not dissolve in Conc. H2SO4 even on warming?<br />Ethylene<br />Benzene<br />Hexane<br />Aniline<br />
  17. 17. Problem<br />15<br />The rate constant of a first order reaction depends on the<br />Concentration of the reactant<br />Concentration of the product<br />Time<br />Temperature<br />
  18. 18. Problem<br />16<br />A catalyst is a substance with <br />Increases the equilibrium concentration of the product<br />Changes the equilibrium constant of the reaction<br />Shortens the time to reach equilibrium<br />Supplies energy to the reaction<br />
  19. 19. Problem<br />17<br />Heavy water is <br /> a. <br /> b. <br /> c. Water obtained by repeated distillation<br /> d. Water at 40C<br />
  20. 20. Problem<br />18<br />Chlorine acts as a bleaching agent only in presence of<br />Dray air<br />Moisture<br />Sunlight<br />Pure oxygen<br />
  21. 21. Problem<br />19<br />In the aluminothermy process, aluminum acts as<br />An oxidizing agent<br />A reducing agent <br />A flux<br />A solder<br />
  22. 22. Problem<br />20<br />Faraday’s laws of electrolysis are related to the<br />Atomic number of the action<br />Atomic number of the anion<br />Equivalent weight of the electrolyte<br />Speed of the action<br />
  23. 23. SECTION – II<br />True or False.<br />State whether the following statements are true or false<br />
  24. 24. 01<br />Problem<br />Hydrolysis of an ester in presence of a dilute acid is known as saponification.<br />____________<br />
  25. 25. Problem <br />02<br />Carbon tetrachloride burns in air when lighted to give phosgene. __________ <br />
  26. 26. Problem<br />03<br />The yield of ketone when a secondary alcohol is oxidized is more than the yield of aldehyde when a primary alcohol is oxidized ___________<br />
  27. 27. Problem<br />04<br />Dilute Hal xoidizes metallic Fe to ____________ <br />
  28. 28. Problem<br />05<br />Linear overlap of two atomic p-orbitals leads to a sigma bond ____________ .<br />
  29. 29. Problem<br />06<br />Gamma rays are electron in the 3d – orbital is less than that in the 4s-orbital in the hydrogen atom ______________ .<br />
  30. 30. SECTION – III<br />Fill in the banks with appropriate words.<br />Read the following statements carefully. Indicate the subdivision number and write the matter corresponding to the blanks strictly in the order they appear in the statement.<br />
  31. 31. 01<br />Problem<br />Acetic acid can be halogenated in the presence of red P and but formic acid cannot be halogenated in the same way _____________.<br />
  32. 32. Problem <br />02<br />Methane does not react with chlorine in the drak ____________.<br />
  33. 33. Problem<br />03<br />Propene reacts with HBr to give isopropyl bromide but does not give n-propyl bromide _________ .<br />
  34. 34. Problem<br />04<br />Although benzene is highly unsaturated, normally it does not undergo addition reaction ___________.<br />
  35. 35. Problem<br />05<br />A bottle of liquor ammonia should be cooled before opening the stopper __________.<br />
  36. 36. Problem<br />06<br />Sliver bromide is used in photography ___________.<br />
  37. 37. Problem<br />07<br />Solid carbon dioxide is known as dry ice ____________ .<br />
  38. 38. SECTION – V<br />Match the following<br />
  39. 39. 01<br />Problem<br /> X Y <br />Decarboxylation Addition reaction<br />Ozonolysis Soda lime<br />Williamson’s synthesis Structure of alkene<br />Dichloroethylene Ether<br />
  40. 40. Problem <br />02<br />Lucas' test Phenol<br />Neutral test Phenol<br />Dye test Tertiary alcohol<br />Tollens test Aniline<br />
  41. 41. Problem <br />03<br />Al Clamine<br />Cu Cryolite<br />Mg Malachite<br />Zn Carnallite<br />
  42. 42. Problem<br />04<br />Haber Activation energy<br />Graham Diffusion of gases<br />Arrhenius Octet rule<br />Lewis Ammonia synthesis<br />
  43. 43. FOR SOLUTION VISIT WWW.VASISTA.NET<br />

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