Solved papers for JEE Main & Advanced AIEEE Solved Paper-2003

done AIEEE Solved Paper-2003 Total Questions - 75

• question_answer1) In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inner-orbit jumps of the electron for Bohr orbits in an atom of hydrogen?     AIEEE  Solved  Paper-2003
  A)
  \[3\to 2\] 
  done clear
  B)
                        \[5\to 2\]
  done clear
  C)
  \[4\to 1\]                            
  done clear
  D)
  \[2\to 5\]
  done clear
  View Answer play_arrow

• question_answer2) The de-Broglie wavelength of a tennis ball of mass 60g moving with a velocity of 10 m/s is approximately (Planck's constant, \[h=6.63\times {{10}^{-34}}\] Js)     AIEEE  Solved  Paper-2003
  A)
  \[{{10}^{-33}}\] m
  done clear
  B)
                        \[{{10}^{-31}}\] m                           
  done clear
  C)
   \[{{10}^{-16}}\]m          
  done clear
  D)
         \[{{10}^{-25}}\] m
  done clear
  View Answer play_arrow

• question_answer3) The orbital angular momentum for an electron revolving in an orbit is given by \[\sqrt{l(l+1)}\frac{h}{2\pi }\]. This momentum for an s-electron will be given by
  A)
  \[+\frac{1}{2}.\,\frac{h}{2\pi }\]           
  done clear
  B)
        zero      
  done clear
  C)
  \[\,\frac{h}{2\pi }\]                        
  done clear
  D)
        \[\sqrt{2}\,.\,\frac{h}{2\pi }\]
  done clear
  View Answer play_arrow

• question_answer4) How many unit cells are present in a cube shaped ideal crystal of \[NaCl\] of mass \[1.00\]g? [At. masses Na \[=23,\,\,Cl=35.5\]]     AIEEE  Solved  Paper-2003
  A)
  \[2.57\times {{10}^{21}}\]     
  done clear
  B)
  \[5.14\times {{10}^{21}}\]                           
  done clear
  C)
  \[1.28\times {{10}^{21}}\]                           
  done clear
  D)
  \[1.71\times {{10}^{21}}\]
  done clear
  View Answer play_arrow

• question_answer5) Glass is a     AIEEE  Solved  Paper-2003
  A)
                                          micro-crystalline solid   
  done clear
  B)
  super-cooled liquid
  done clear
  C)
  gel                         
  done clear
  D)
  polymeric mixture
  done clear
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• question_answer6) Which one of the following statements is correct?     AIEEE  Solved  Paper-2003
  A)
  Manganese salts give a violet borax bead test in the reducing flame
  done clear
  B)
  From a mixed precipitate of \[AgCl\] and \[Agl,\] ammonia solution dissolves only \[AgCl\]
  done clear
  C)
  Ferric ions give a deep green precipitate on adding potassium ferrocyanide solution
  done clear
  D)
  On boiling a solution having \[{{K}^{+}},C{{a}^{2+}}\] and \[HCO_{3}^{-}\] ions we get a precipitate \[{{K}_{2}}Ca{{(C{{O}_{3}})}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer7) According to the periodic law of elements, the variation in properties of elements is related to their     AIEEE  Solved  Paper-2003
  A)
  atomic masses
  done clear
  B)
        nuclear masses
  done clear
  C)
  atomic numbers              
  done clear
  D)
  nuclear neutron-proton number ratio
  done clear
  View Answer play_arrow

• question_answer8) Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite     AIEEE  Solved  Paper-2003
  A)
  is a non-crystalline substance
  done clear
  B)
  is an allotropic form of diamond
  done clear
  C)
  has molecules of variable molecular masses like polymers
  done clear
  D)
  has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
  done clear
  View Answer play_arrow

• question_answer9) The IUPAC name of \[C{{H}_{2}}COCH{{(C{{H}_{3}})}_{2}}\] is     AIEEE  Solved  Paper-2003
  A)
  isopropylmethyl ketone
  done clear
  B)
  2-methyl-S-butanone
  done clear
  C)
  4-methyli-sopropyl ketone
  done clear
  D)
  3-methyl-2-butanone
  done clear
  View Answer play_arrow

• question_answer10) When \[C{{H}_{2}}=CH-COOH\] is reduced with \[LiAl{{H}_{4}}\], the compound obtained will be     AIEEE  Solved  Paper-2003
  A)
  \[C{{H}_{3}}-C{{H}_{2}}-COOH\]
  done clear
  B)
        \[C{{H}_{2}}=CH-C{{H}_{2}}OH\]
  done clear
  C)
  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}OH\]
  done clear
  D)
  \[C{{H}_{3}}-C{{H}_{2}}-CHO\]
  done clear
  View Answer play_arrow

• question_answer11) According to the kinetic theory of gases, in an ideal gas, between two successive collisions a gas molecule travels      AIEEE  Solved  Paper-2003
  A)
  in a circular path
  done clear
  B)
  in a wavy path
  done clear
  C)
  in a straight line path
  done clear
  D)
  with an accelerated velocity
  done clear
  View Answer play_arrow

• question_answer12) Which of the following group of transition metals is called coinage metals?     AIEEE  Solved  Paper-2003
  A)
  Cu, Ag, Au        
  done clear
  B)
        Ru, Rh, Pd                          
  done clear
  C)
  Fe, Co, Ni         
  done clear
  D)
        Os, Ir, Pt
  done clear
  View Answer play_arrow

• question_answer13) The general formula \[{{C}_{n}}{{H}_{2n}}{{O}_{2}}\] could be for open chain     AIEEE  Solved  Paper-2003
  A)
  diketones           
  done clear
  B)
        carboxylic-acids
  done clear
  C)
                        diols                      
  done clear
  D)
        dialdehydes
  done clear
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• question_answer14) An ether is more volatile than an alcohol having the same molecular formula. This is due to     AIEEE  Solved  Paper-2003
  A)
  dipolar character of ethers
  done clear
  B)
  alcohols having resonance structures
  done clear
  C)
  inter-molecular hydrogen bonding in ethers
  done clear
  D)
  inter-molecular hydrogen bonding in alcohols
  done clear
  View Answer play_arrow

• question_answer15) Among the following four structures I to IV \[{{C}_{2}}{{H}_{5}}-\overset{\begin{smallmatrix}  C{{H}_{3}} \\  || \end{smallmatrix}}{\mathop{C}}\,H-{{C}_{3}}{{H}_{7}}C{{H}_{3}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-\overset{\begin{smallmatrix}  C{{H}_{3}} \\  || \end{smallmatrix}}{\mathop{C}}\,H-{{C}_{2}}{{H}_{5}}\]                                 (I)                           (II)              \[H-\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{{{\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\mathop{C}}\,}^{\oplus }}}}\,\]                         \[{{C}_{2}}{{H}_{5}}-\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}\,H-{{C}_{2}}{{H}_{5}}\]                   (III)                                       (IV) it is true that     AIEEE  Solved  Paper-2003
  A)
  all four are chiral compounds
  done clear
  B)
  only I and II are chiral compounds
  done clear
  C)
  only III is a chiral compound
  done clear
  D)
  only II and IV are chiral compounds
  done clear
  View Answer play_arrow

• question_answer16) Which one of the following processes will produce hard water?     AIEEE  Solved  Paper-2003
  A)
  Saturation of water with \[CaC{{O}_{3}}\]
  done clear
  B)
  Saturation of water with \[MgC{{O}_{3}}\]
  done clear
  C)
  Saturation of water with \[CaS{{O}_{4}}\]
  done clear
  D)
  Addition of \[N{{a}_{2}}S{{O}_{4}}\] to water
  done clear
  View Answer play_arrow

• question_answer17) Which one of the following compounds has the smallest bond angle in its molecule?     AIEEE  Solved  Paper-2003
  A)
  \[S{{O}_{2}}\]                                   
  done clear
  B)
  \[O{{H}_{2}}\]                  
  done clear
  C)
  \[S{{H}_{2}}\]                                   
  done clear
  D)
  \[N{{H}_{3}}\]
  done clear
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• question_answer18) Which one of the following pairs of molecules will have permanent dipole moments for both members?     AIEEE  Solved  Paper-2003
  A)
                                          \[Si{{F}_{4}}\] and \[N{{O}_{2}}\]   
  done clear
  B)
        \[N{{O}_{2}}\] and \[C{{O}_{2}}\]
  done clear
  C)
        \[N{{O}_{2}}\] and \[{{O}_{3}}\]      
  done clear
  D)
        \[Si{{F}_{4}}\] and \[C{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer19) Which one of the following group represents a collection of isoelectronic species? (At. no. Cs-55. Br-35)     AIEEE  Solved  Paper-2003
  A)
                          \[N{{a}^{+}},C{{a}^{2+}},M{{g}^{2+}}\]
  done clear
  B)
        \[{{N}^{3-}},{{F}^{-}},N{{a}^{+}}\]
  done clear
  C)
        Be, \[A{{l}^{3+}},C{{l}^{-}}\]      
  done clear
  D)
        \[C{{a}^{2+}},C{{s}^{+}},Br\]
  done clear
  View Answer play_arrow

• question_answer20) In the anion \[HCO{{O}^{-}}\] the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?     AIEEE  Solved  Paper-2003
  A)
  Electronic orbits of carbon atom are hybridized
  done clear
  B)
  The \[c=0\] bond is weaker than the C?O bond
  done clear
  C)
  The anion \[HCO{{O}^{-}}\] has two resonating structures
  done clear
  D)
  The anion is obtained by the removal of a proton from the acid molecule
  done clear
  View Answer play_arrow

• question_answer21) The pair of species having identical shapes for molecules of both species is     AIEEE  Solved  Paper-2003
  A)
                                          \[C{{F}_{4}},S{{F}_{4}}\]         
  done clear
  B)
                        \[Xe{{F}_{2}},C{{O}_{2}}\]                           
  done clear
  C)
        \[B{{r}_{3}},PC{{l}_{3}}\]        
  done clear
  D)
                        \[P{{F}_{5}},l{{F}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer22) The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26. Which one of these may be expected to have the highest second ionisation enthalpy?     AIEEE  Solved  Paper-2003
  A)
                          V                            
  done clear
  B)
  Cr                           
  done clear
  C)
  Mn                        
  done clear
  D)
  Fe
  done clear
  View Answer play_arrow

• question_answer23) Consider the reaction equilibrium,              \[2S{{O}_{2}}(g)+{{O}_{2}}(g)2S{{O}_{3}}(g);\]                                                 \[\Delta {{H}^{o}}=-198\,k\,J\] On the basis of Le Chatelier's principle, the condition favourable for the forward reaction is     AIEEE  Solved  Paper-2003
  A)
  lowering of temperature as well as pressure
  done clear
  B)
  increasing temperature as well as pressure
  done clear
  C)
  lowering the temperature and increasing the pressure
  done clear
  D)
  any value of temperature and pressure
  done clear
  View Answer play_arrow

• question_answer24) What volume of hydrogen gas, at 273K and 1 atm pressure will be consumed in obtaining \[21.6\] g of elemental boron (atomic mass \[=10.8\]) from the reduction of boron trichloride by hydrogen?     AIEEE  Solved  Paper-2003
  A)
                                          \[89.6\] L                            
  done clear
  B)
        \[67.2\] L                            
  done clear
  C)
  \[44.8\] L                            
  done clear
  D)
  \[22.4\] L
  done clear
  View Answer play_arrow

• question_answer25) For the reaction equilibrium,                 \[{{N}_{2}}{{O}_{4}}(g)\overset{{}}{leftrightarrows}2NO(g)\] the concentrations of \[{{N}_{2}}{{O}_{4}}\] and \[N{{O}_{2}}\] at equilibrium    are   \[4.8\times {{10}^{-2}}\] and \[1.2\times {{10}^{-2}}mol\,{{L}^{-1}}\] respectively. The value of \[{{K}_{c}}\] for the reaction is     AIEEE  Solved  Paper-2003
  A)
                          \[3.3\times {{10}^{2}}mol\,{{L}^{-1}}\]  
  done clear
  B)
        \[3\times {{10}^{-1}}mol\,{{L}^{-1}}\]
  done clear
  C)
        \[3\times {{10}^{-3}}mol\,{{L}^{-1}}\]   
  done clear
  D)
        \[3\times {{10}^{3}}mol\,{{L}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer26) The solubility in water of a sparingly soluble salt \[A{{B}_{2}}\] is \[1.0\times {{10}^{-5}}mol\,{{L}^{-1}}\] Its solubility product number will be     AIEEE  Solved  Paper-2003
  A)
                          \[4\times {{10}^{-15}}\]                               
  done clear
  B)
  \[4\times {{10}^{-10}}\]                               
  done clear
  C)
  \[1\times {{10}^{-15}}\]               
  done clear
  D)
        \[1\times {{10}^{-10}}\]
  done clear
  View Answer play_arrow

• question_answer27) When during electrolysis of a solution of \[AgN{{O}_{3}}\], 9650 coulombs of charge pass through the electroplating bath, the mass of silver deposited on the cathode will be     AIEEE  Solved  Paper-2003
  A)
                          \[1.08\] g                            
  done clear
  B)
  \[10.8\] g                            
  done clear
  C)
  \[21.6\] g                            
  done clear
  D)
  108 g
  done clear
  View Answer play_arrow

• question_answer28) For the redox reaction, \[Zn(s)+C{{u}^{2+}}(0.1M)\xrightarrow{{}}Z{{n}^{2+}}(1M)+Cu(s)\]taking place in a cell, \[E_{cell}^{o}\] is \[1.10\] volt. \[{{E}_{cell}}\] for the cell will be \[\left( 2.303\frac{RT}{F}=0.0591 \right)\]     AIEEE  Solved  Paper-2003
  A)
                          \[2.14\] V                           
  done clear
  B)
  \[1.80\] V                           
  done clear
  C)
  \[1.07\] V                           
  done clear
  D)
  \[0.82\] V
  done clear
  View Answer play_arrow

• question_answer29) In a \[0.2\] molal aqueous solution of a weak acid HX, the degree of ionisation is \[0.3\]. Taking \[{{K}_{f}}\] for water as \[1.85\], the freezing point of the solution will be nearest to     AIEEE  Solved  Paper-2003
  A)
                          \[-{{0.480}^{o}}C\]       
  done clear
  B)
        \[-{{0.360}^{o}}C\]                         
  done clear
  C)
  \[-{{0.260}^{o}}C\]        
  done clear
  D)
        \[+\,{{0.480}^{o}}C\]
  done clear
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• question_answer30) The rate law for a reaction between the substances A and B is given by rate \[=k\,{{[A]}^{n}}{{[B]}^{m}}\]. On doubling   the concentration of A and halving the concentration of B, the ratio of the new rate to the earlier rate of the reaction will be as   AIEEE  Solved  Paper-2003
  A)
  \[\frac{1}{{{2}^{m+n}}}\]                             
  done clear
  B)
  (m + n)                                
  done clear
  C)
  (n - m)                 
  done clear
  D)
  \[{{2}^{(n-m)}}\]
  done clear
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• question_answer31) 25 mL of a solution of barium hydroxide on titration with \[0.1\] molar solution of hydrochloric acid gave a titre value of 35 mL. The molarity of barium hydroxide solution was     AIEEE  Solved  Paper-2003
  A)
                          \[0.07\]                               
  done clear
  B)
  \[0.14\]                               
  done clear
  C)
  \[0.28\]                               
  done clear
  D)
  \[0.35\]
  done clear
  View Answer play_arrow

• question_answer32) The correct relationship between free energy change in a reaction and the corresponding equilibrium constant \[{{K}_{c}}\] is     AIEEE  Solved  Paper-2003
  A)
                          \[\Delta G=RT\,\ln \,{{K}_{c}}\] 
  done clear
  B)
        \[-\Delta G=RT\,\ln \,{{K}_{c}}\]
  done clear
  C)
        \[\Delta {{G}^{o}}=RT\,\ln \,{{K}_{c}}\]
  done clear
  D)
        \[-\Delta {{G}^{o}}=RT\,\ln \,{{K}_{c}}\]
  done clear
  View Answer play_arrow

• question_answer33) If at 298K the bond energies of \[C-H,C-C,\,C=C\] and \[H-H\] bonds are respectively 414, 347, 615 and 435 kJ \[mo{{l}^{-1}}\], the value of enthalpy change for the reaction \[{{H}_{2}}C=C{{H}_{2}}(g)+{{H}_{2}}(g)\xrightarrow{\,}\,{{H}_{3}}C-C{{H}_{3}}(g)\] at 298K will be     AIEEE  Solved  Paper-2003
  A)
                                          \[+250\] kJ        
  done clear
  B)
        \[-250\] kJ                          
  done clear
  C)
        \[+125\] kJ        
  done clear
  D)
        \[-125\] kJ
  done clear
  View Answer play_arrow

• question_answer34) The enthalpy change for reaction does not depend upon the     AIEEE  Solved  Paper-2003
  A)
  physical state of reactants and products
  done clear
  B)
  use of different reactants for the same product
  done clear
  C)
  nature of intermediate reaction steps
  done clear
  D)
  difference in initial or final temperatures of involved substances
  done clear
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• question_answer35) A pressure cooker reduces cooking time for food because     AIEEE  Solved  Paper-2003
  A)
  heat is more evenly distributed in the cooking space
  done clear
  B)
  boiling point of water involved in cooking is increased
  done clear
  C)
  the higher pressure inside the cooker crushes the food material
  done clear
  D)
  cooking involves chemical changes helped by a rise in temperature
  done clear
  View Answer play_arrow

• question_answer36) If liquids A and B form an ideal solution, the     AIEEE  Solved  Paper-2003
  A)
  enthalpy of mixing is zero
  done clear
  B)
  entropy of mixing is zero
  done clear
  C)
  free energy of mixing is zero
  done clear
  D)
  free energy as well as the entropy of mixing are each zero
  done clear
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• question_answer37) For the reaction system                 \[2NO(g)+{{O}_{2}}(g)\xrightarrow{{}}2N{{O}_{2}}(g)\]   volume is suddenly reduced to half its value by increasing the pressure on it. If the reaction is of first order with respect to \[{{O}_{2}}\] and second order with respect to NO; the rate of reaction will     AIEEE  Solved  Paper-2003
  A)
  diminish to one-fourth of its initial value
  done clear
  B)
  diminish to one-eighth of its initial value
  done clear
  C)
  increase to eight times of its initial value
  done clear
  D)
  increase to four times of its initial value
  done clear
  View Answer play_arrow

• question_answer38) For a cell reaction involving a two-electron change, the standard emf of the cell is found to be \[0.295\] V at \[{{25}^{o}}C\]. The equilibrium constant of the reaction at \[{{25}^{o}}C\] will be     AIEEE  Solved  Paper-2003
  A)
  \[1\times {{10}^{-10}}\]               
  done clear
  B)
        \[29.5\times {{10}^{-2}}\]                            
  done clear
  C)
  10                                          
  done clear
  D)
  \[1\times {{10}^{10}}\]
  done clear
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• question_answer39) In an irreversible process taking place at constant T and p and in which only pressure-volume work is being done, the change in Gibbs free energy (dG) and change in entropy (dS), satisfy the criteria     AIEEE  Solved  Paper-2003
  A)
  \[{{(dS)}_{V,E}}<0,{{(dG)}_{T,P}}<0\]    
  done clear
  B)
  \[{{(dS)}_{V,E}}>0,{{(dG)}_{T,P}}<0\]
  done clear
  C)
  \[{{(dS)}_{V,E}}=0,{{(dG)}_{T,P}}=0\]
  done clear
  D)
  \[{{(dS)}_{V,E}}=0,{{(dG)}_{T,P}}>0\]
  done clear
  View Answer play_arrow

• question_answer40) Which one of the following characteristics is not correct for physical adsorption?     AIEEE  Solved  Paper-2003
  A)
  Adsorption on solids is reversible
  done clear
  B)
  Adsorption increases with increase in temperature
  done clear
  C)
  Adsorption is spontaneous
  done clear
  D)
  Both enthalpy and entropy of adsorption are negative
  done clear
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• question_answer41) In the respect of the equation \[k=A{{e}^{-{{E}_{\alpha }}/RT}}\] in chemical kinetics, which one of the following statements is correct?     AIEEE  Solved  Paper-2003
  A)
  k is equilibrium constant
  done clear
  B)
  A is adsorption factor
  done clear
  C)
  \[{{E}_{a}}\] is energy of activation
  done clear
  D)
  R is Rydberg constant
  done clear
  View Answer play_arrow

• question_answer42) Standard reduction electrode potentials of three metals A, B and C are \[+1.5\] V, \[-3.0\] V and \[-1.2\] V respectively. The reducing power of these metals are     AIEEE  Solved  Paper-2003
  A)
  \[B>C>A\]       
  done clear
  B)
        \[A>B>C\]                          
  done clear
  C)
  \[C>B>A\]      
  done clear
  D)
                        \[A>C>B\]
  done clear
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• question_answer43) Which one of the following substances has the highest proton affinity?   AIEEE  Solved  Paper-2003
  A)
  \[{{H}_{2}}O\]                                  
  done clear
  B)
               \[{{H}_{2}}S\]
  done clear
  C)
  \[N{{H}_{3}}\]                  
  done clear
  D)
        \[P{{H}_{3}}\]
  done clear
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• question_answer44) Which one of the following is an amphoteric oxide?     AIEEE  Solved  Paper-2003
  A)
                          \[ZnO\]                               
  done clear
  B)
  \[N{{a}_{2}}O\]                                
  done clear
  C)
  \[S{{O}_{2}}\]                   
  done clear
  D)
  \[{{B}_{2}}{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer45) A red solid is insoluble in water. However, it becomes soluble if some KI is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is     AIEEE  Solved  Paper-2003
  A)
                          \[{{(N{{H}_{4}})}_{2}}C{{r}_{2}}{{O}_{7}}\]     
  done clear
  B)
        \[Hg{{l}_{2}}\]                  
  done clear
  C)
  \[HgO\]                               
  done clear
  D)
  \[P{{b}_{3}}{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer46) Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it is that     AIEEE  Solved  Paper-2003
  A)
  concentrated hydrochloric acid emits strongly smelling HCI gas all the time
  done clear
  B)
  oxygen in air reacts with the emitted HCI gas to form a cloud of chlorine gas 
  done clear
  C)
  strong affinity of HCI gas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke
  done clear
  D)
  due to strong affinity for water, concentrated hydrochloric acid pulls moisture of air towards itself. This moisture forms droplets of water and hence the cloud
  done clear
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• question_answer47) The substance used in Holmes signals of the ship is a mixture of     AIEEE  Solved  Paper-2003
  A)
  \[Ca{{C}_{2}}+C{{a}_{3}}{{P}_{2}}\]
  done clear
  B)
                                        \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}+P{{b}_{3}}{{O}_{4}}\]
  done clear
  C)
  \[{{H}_{3}}P{{O}_{4}}\,+CaC{{l}_{2}}\]   
  done clear
  D)
  \[N{{H}_{3}}+HOCl\]
  done clear
  View Answer play_arrow

• question_answer48) The number of d-electrons retained in \[F{{e}^{2+}}\] (At. no. \[Fe=26\]) ions is     AIEEE  Solved  Paper-2003
  A)
                                          3                             
  done clear
  B)
        4                             
  done clear
  C)
  5                                             
  done clear
  D)
  6
  done clear
  View Answer play_arrow

• question_answer49) What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?     AIEEE  Solved  Paper-2003
  A)
  \[C{{r}^{3+}}\] and \[C{{r}_{2}}O_{7}^{2-}\] are formed
  done clear
  B)
  \[C{{r}_{2}}O_{7}^{2-}\] and \[{{H}_{2}}O\] are formed
  done clear
  C)
  \[CrO_{4}^{2-}\] is reduced to \[+3\] state of Cr
  done clear
  D)
  None of the above
  done clear
  View Answer play_arrow

• question_answer50) In the coordination compound, \[{{K}_{4}}[Ni{{(CN)}_{4}}]\], the oxidation state of nickel is     AIEEE  Solved  Paper-2003
  A)
  \[-1\]   
  done clear
  B)
                                        0         
  done clear
  C)
        \[+1\]                                   
  done clear
  D)
        \[+2\]   
  done clear
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• question_answer51) Ammonia forms the complex ion \[{{[Cu{{(N{{H}_{3}})}_{4}}]}^{2+}}\] with copper ions in the alkaline solutions but not in acidic solutions. What is the reason for it?     AIEEE  Solved  Paper-2003
  A)
  In acidic solutions hydration protects copper ions
  done clear
  B)
  In acidic solutions protons coordinate with ammonia molecules forming \[NH_{4}^{+}\] ions and \[N{{H}_{3}}\] molecules are not available
  done clear
  C)
  In alkaline solutions insoluble \[Cu{{(OH)}_{2}}\] is precipitated which is soluble in excess of any alkali
  done clear
  D)
  Copper hydroxide is an amphoteric substance
  done clear
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• question_answer52) One mole of the complex compound \[Co{{(N{{H}_{3}})}_{5}}C{{l}_{3}}\], gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of \[AgN{{O}_{3}}\] solution to yield two moles of \[AgCl\] (s). The structure of the complex is     AIEEE  Solved  Paper-2003
  A)
  \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\] 
  done clear
  B)
  \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{2}}].2N{{H}_{3}}\]
  done clear
  C)
  \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl.\,N{{H}_{3}}\]
  done clear
  D)
  \[[Co{{(N{{H}_{3}})}_{4}}Cl]C{{l}_{2}}.N{{H}_{3}}\]
  done clear
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• question_answer53) The radius of \[L{{a}^{3+}}\] (atomic number of \[La=57\]) is \[1.06\overset{o}{\mathop{A}}\,\]. Which one of the following given values will be closest to the radius of \[L{{u}^{3+}}\] (atomic number of \[Lu=71\])?     AIEEE  Solved  Paper-2003      
  A)
  \[1.60\,\overset{o}{\mathop{A}}\,\]     
  done clear
  B)
        \[1.40\,\overset{o}{\mathop{A}}\,\]     
  done clear
  C)
  \[1.06\,\overset{o}{\mathop{A}}\,\]                     
  done clear
  D)
  \[0.85\,\overset{o}{\mathop{A}}\,\]
  done clear
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• question_answer54) The radionuclide \[_{90}^{234}Th\] undergoes two successive \[\beta \] -decays followed by one \[\alpha \] -decay. The atomic number and the mass number respectively of the resulting radionuclide are     AIEEE  Solved  Paper-2003  
  A)
                          92 and 234    
  done clear
  B)
        94 and 230                          
  done clear
  C)
   90 and 230       
  done clear
  D)
        92 and 230
  done clear
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• question_answer55) the half-life of a radioactive isotope is 3 h. If the initial mass of the isotope were 256 g, the mass of it remaining undecayed after 18 h would be     AIEEE  Solved  Paper-2003
  A)
                          \[4.0\] g              
  done clear
  B)
        \[8.0\] g                              
  done clear
  C)
  \[12.0\] g                            
  done clear
  D)
  \[16.0\] g   
  done clear
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• question_answer56) Several blocks of magnesium are fixed to the bottom of a ship to     AIEEE  Solved  Paper-2003
  A)
  keep away the sharks  
  done clear
  B)
  make the ship lighter
  done clear
  C)
  prevent action of water and salt
  done clear
  D)
  prevent puncturing by under-sea rocks
  done clear
  View Answer play_arrow

• question_answer57) In curing cement plasters water is sprinkled from time to time. This helps in     AIEEE  Solved  Paper-2003
  A)
  keeping it cool
  done clear
  B)
  developing interlocking needle-like crystals of hydrated silicates
  done clear
  C)
  hydrating sand and gravel mixed with cement
  done clear
  D)
  converting sand into silicic acid
  done clear
  View Answer play_arrow

• question_answer58) Which one of the following statements is not true?       AIEEE  Solved  Paper-2003
  A)
  The conjugate base of \[{{H}_{2}}PO_{4}^{-}\] is \[HPO_{4}^{2-}\]
  done clear
  B)
  \[pH+pOH=14\] for all aqueous solutions
  done clear
  C)
  The pH of \[1\times {{10}^{-8}}M\]HCl is 8
  done clear
  D)
  96,500 coulombs of electricity when passed through a \[CuS{{O}_{4}}\] solution deposit 1g equivalent of copper at the cathode 
  done clear
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• question_answer59) The correct order of increasing basic nature for the bases \[N{{H}_{3}},C{{H}_{3}}N{{H}_{2}}\] and \[{{(C{{H}_{3}})}_{2}}NH\]is      AIEEE  Solved  Paper-2003
  A)
  \[C{{H}_{3}}N{{H}_{2}}<N{{H}_{3}}<{{(C{{H}_{3}})}_{2}}NH\]
  done clear
  B)
  \[{{(C{{H}_{3}})}_{2}}NH<N{{H}_{3}}<C{{H}_{3}}N{{H}_{2}}\]
  done clear
  C)
  \[N{{H}_{3}}<C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH\]
  done clear
  D)
  \[C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH<N{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer60) Butene-1 may be converted to butane by reaction with     AIEEE  Solved  Paper-2003
  A)
  \[Zn-HCl\]                          
  done clear
  B)
  \[Sn-HCl\]
  done clear
  C)
  \[Zn-Hg\]
  done clear
  D)
  \[Pd/{{H}_{2}}\]
  done clear
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• question_answer61) The solubilities of carbonates decrease down the magnesium group due to a decrease in     AIEEE  Solved  Paper-2003
  A)
  lattice energies of solids
  done clear
  B)
  hydration energies of cations
  done clear
  C)
  inter-ionic attraction
  done clear
  D)
  entropy of solution formation
  done clear
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• question_answer62) During dehydration of alcohols to alkenes by heating with concentrated \[{{H}_{2}}S{{O}_{4}}\] the initiation step is     AIEEE  Solved  Paper-2003
  A)
  protonation of alcohol molecule
  done clear
  B)
  formation of carbocation
  done clear
  C)
  elimination of water       
  done clear
  D)
  formation of an ester         
  done clear
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• question_answer63)     Which one of the following nitrates will leave behind a metal on strong heating?     AIEEE  Solved  Paper-2003
  A)
  Ferric nitrate                     
  done clear
  B)
  Copper nitrate
  done clear
  C)
        Manganese nitrate        
  done clear
  D)
  Silver nitrate
  done clear
  View Answer play_arrow

• question_answer64) When rain is accompanied by a thunderstorm, the collected rain water will have a pH value     AIEEE  Solved  Paper-2003
  A)
  slightly lower than that of rain water without thunderstorm
  done clear
  B)
  slightly higher than that when the thunderstorm is not there
  done clear
  C)
  uninfluenced by occurrence of thunderstorm
  done clear
  D)
  which depends on the amount of dust in air
  done clear
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• question_answer65) Complete hydrolysis of cellulose gives     AIEEE  Solved  Paper-2003
  A)
  D-fructose  
  done clear
  B)
                        D-ribose                              
  done clear
  C)
  D-glucose         
  done clear
  D)
        L-glucose
  done clear
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• question_answer66) For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be     AIEEE  Solved  Paper-2003
  A)
  mercury         
  done clear
  B)
                        tin          
  done clear
  C)
  sodium                                
  done clear
  D)
  magnesium
  done clear
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• question_answer67) The substance not likely to contain \[CaC{{O}_{3}}\] is     AIEEE  Solved  Paper-2003
  A)
  a marble statue               
  done clear
  B)
  calcined gypsum
  done clear
  C)
        sea shells                            
  done clear
  D)
  dolomite
  done clear
  View Answer play_arrow

• question_answer68) The reason for double helical structure of DNA is operation of     AIEEE  Solved  Paper-2003
  A)
  van der Waals' forces
  done clear
  B)
  dipole-dipole interaction
  done clear
  C)
  hydrogen bonding
  done clear
  D)
  electrostatic attractions
  done clear
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• question_answer69) Bottles containing \[{{C}_{6}}{{H}_{5}}I\] and \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}I\] lost their original labels. They were labelled A and B for testing. A and B were separately taken in a test tube and boiled with \[NaOH\] solution. The end solution in each tube was made acidic with dilute \[HN{{O}_{3}}\] and then some \[AgN{{O}_{3}}\] solution was added. Substance B gave a yellow precipitate. Which one of the following statements is true for this experiment?     AIEEE  Solved  Paper-2003
  A)
  A was \[{{C}_{6}}{{H}_{5}}l\]      
  done clear
  B)
        A was \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}l\]
  done clear
  C)
    B was \[{{C}_{6}}{{H}_{5}}l\]      
  done clear
  D)
  Addition of \[HN{{O}_{3}}\] was unnecessary
  done clear
  View Answer play_arrow

• question_answer70) Ethyl isocyanide on hydrolysis in acidic medium generates     AIEEE  Solved  Paper-2003
  A)
  ethylamine salt and methanoic acid
  done clear
  B)
  propanoic acid and ammonium salt
  done clear
  C)
  ethanoic acid and ammonium salt
  done clear
  D)
  methylamine salt and ethanoic acid
  done clear
  View Answer play_arrow

• question_answer71) The internal energy change when a system goes from state A to B is 40 kJ/mol. If the system goes from A to B by a reversible path and returns to state A by an irreversible path, what would be the net change in internal energy?     AIEEE  Solved  Paper-2003
  A)
  40 kJ                                     
  done clear
  B)
  > 40 kJ                  
  done clear
  C)
  < 40 kJ                                  
  done clear
  D)
  zero
  done clear
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• question_answer72) The reaction of chloroform with alcoholic KOH and p-toluidine form     AIEEE  Solved  Paper-2003
  A)
  
  done clear
  B)
  
  done clear
  C)
   
  done clear
  D)
      
  done clear
  View Answer play_arrow

• question_answer73) Nylon threads are made of
  A)
  polyvinyl polymer
  done clear
  B)
  polyester polymer
  done clear
  C)
  polyamide polymer
  done clear
  D)
  polyethylene polymer
  done clear
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• question_answer74) On mixing a certain alkane with chlorine and irradiating it with Ultraviolet light, it forms only one monochloroalkane. This alkane could be     AIEEE  Solved  Paper-2003
  A)
  propane              
  done clear
  B)
        pentane                              
  done clear
  C)
  isopentane                        
  done clear
  D)
  neopentane
  done clear
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• question_answer75) Which of the following could act as a propellant for rockets?      AIEEE  Solved  Paper-2003
  A)
  Liquid hydrogen + liquid nitrogen
  done clear
  B)
  Liquid oxygen + liquid argon
  done clear
  C)
  Liquid hydrogen + liquid oxygen
  done clear
  D)
   Liquid nitrogen + liquid oxygen    
  done clear
  View Answer play_arrow