JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank

done Critical Thinking Surface Chemistry Total Questions - 22

• question_answer1)
  Which of the following is contributed towards the extra stability of lyophilic colloids         [CPMT 1983]
  A)
             Hydration                               done clear
  B)
             Charge done clear
  C)
             Colour                                      done clear
  D)
             Tyndall effect done clear
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• question_answer2)
  Which of the following methods is used for sol destruction [CPMT 1988]
  A)
             Condensation done clear
  B)
             Dialysis done clear
  C)
             Diffusion through animal membrane done clear
  D)
             Addition of an electrolyte done clear
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• question_answer3)
  A catalyst is a substance which                                     [IIT 1983]
  A)
             Increases the equilibrium concentration of the product done clear
  B)
             Changes the equilibrium constant of the reaction done clear
  C)
             Shortens the time to reach equilibrium done clear
  D)
             Supplies energy to the reaction done clear
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• question_answer4)
  The decomposition of hydrogen peroxide can be slowed by the addition of a small amount of acetamide. The latter acts as a                                                                              [MNR 1978]
  A)
             Detainer                                 done clear
  B)
             Stopper done clear
  C)
             Promoter                               done clear
  D)
             Inhibitor done clear
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• question_answer5)
  The ability of an ion to bring about coagulation of a given colloid depends upon [CPMT 1980; MP PET/PMT 1988; CBSE PMT 1997; MP PMT 1989; MP PET 1994]
  A)
             Its size done clear
  B)
             The magnitude of its charge only done clear
  C)
             The sign of its charge done clear
  D)
             Both the magnitude and the sign of its charge done clear
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• question_answer6)
  Which one of the following is an incorrect statement for physisorption                                  [MP PET 2002]
  A)
             It is a reversible process done clear
  B)
             It requires less heat of adsorption done clear
  C)
             It requires activation energy done clear
  D)
             It takes place at low temperature done clear
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• question_answer7)
  Which is not colloidal                       [CPMT 1984; MP PET 1989, 91]
  A)
             Chlorophyll                            done clear
  B)
             Egg done clear
  C)
             Ruby glass                              done clear
  D)
             Milk done clear
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• question_answer8)
  Which one of the following is not a surfactant                      [AIIMS 2003]
  A)
             \[C{{H}_{3}}-{{(C{{H}_{2}})}_{15}}-\underset{C{{H}_{3}}}{\overset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,}{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{{{N}^{+}}-}}}\,}}}\,C{{H}_{3}}B{{r}^{-}}\] done clear
  B)
             \[C{{H}_{3}}-{{(C{{H}_{2}})}_{14}}-C{{H}_{2}}-N{{H}_{2}}\] done clear
  C)
             \[C{{H}_{3}}-{{(C{{H}_{2}})}_{16}}-C{{H}_{2}}OSO_{2}^{-}N{{a}^{+}}\] done clear
  D)
             \[OHC-{{(C{{H}_{2}})}_{14}}-C{{H}_{2}}-CO{{O}^{-}}N{{a}^{+}}\] done clear
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• question_answer9)
  Size of colloidal particles is [CPMT 1984; MP PMT 1990, 92]
  A)
             \[0.1\,m\,\mu \] to \[0.001\,m\,\mu \]                        done clear
  B)
             \[10\,\mu \] to \[20\,\mu \] done clear
  C)
             \[0.05\,m\,\mu \] to \[0.1\,m\,\mu \] done clear
  D)
             \[25\,\mu \] to \[30\,\mu \] done clear
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• question_answer10)
  Which of the following electrolytes is most effective in the coagulation of gold solution [KCET 1996]
  A)
             \[NaN{{O}_{3}}\]                done clear
  B)
             \[{{K}_{4}}[Fe{{(CN)}_{6}}]\] done clear
  C)
             \[N{{a}_{3}}P{{O}_{4}}\]  done clear
  D)
             \[MgC{{l}_{2}}\] done clear
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• question_answer11)
  A catalyst is used in a reaction to [CPMT 1972, 75, 97; DPMT 1982]
  A)
             Change the nature of reaction products done clear
  B)
             Increase the reaction yield done clear
  C)
             Decrease the need for reactants done clear
  D)
             Decrease the time required for the reaction done clear
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• question_answer12)
  Which one of the following is not represented by sols [MP PMT 1992]
  A)
             Absorption                            done clear
  B)
             Tyndall effect done clear
  C)
             Flocculation                           done clear
  D)
             Paramagnetism done clear
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• question_answer13)
  Example of intrinsic colloid is
  A)
             Glue                                         done clear
  B)
             Sulphur done clear
  C)
             \[Fe\]                                       done clear
  D)
             \[A{{s}_{2}}{{S}_{3}}\] done clear
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• question_answer14)
  Colloidal solution of arsenious sulphide can be prepared by [AMU 1985]
  A)
             Electrodispersion method done clear
  B)
             Peptization done clear
  C)
             Double decomposition done clear
  D)
             Hydrolysis] done clear
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• question_answer15)
  The capacity to bring about coagulation increases with
  A)
             Ionic radii                                done clear
  B)
             Atomic radii done clear
  C)
             Valency of an ion                done clear
  D)
             Size of an ion done clear
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• question_answer16)
  Gold number gives [NCERT 1987; MNR 1987; UPSEAT 2002; Kurukshetra CET 2002; MP PMT 2004]
  A)
             The amount of gold present in the colloid done clear
  B)
             The amount of gold required to break the colloid done clear
  C)
             The amount of gold required to protect the colloid done clear
  D)
             None of these done clear
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• question_answer17)
  Point out the false statement                               [MP PET 1997]
  A)
             Brownian movement and Tyndall effect is shown by colloidal systems done clear
  B)
             Gold number is a measure of the protective power of a lyophilic colloid done clear
  C)
             The colloidal solution of a liquid in liquid is called is gel done clear
  D)
             Hardy?Schulze rule is related with coagulation done clear
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• question_answer18)
  Which of the following does not contain a hydrophobic structure              [NCERT 1983]
  A)
             Linseed oil                              done clear
  B)
             Lanolin done clear
  C)
             Glycogen done clear
  D)
             Rubber done clear
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• question_answer19)
  The function of gum-arabic in the preparation of  indian ink is
  A)
             Coagulation                           done clear
  B)
             Peptization done clear
  C)
             Protective action                 done clear
  D)
             Absorption done clear
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• question_answer20)
  Identify the gas which is readily adsorbed by activated charcol [KCET 2004]
  A)
             \[{{N}_{2}}\]                         done clear
  B)
             \[S{{O}_{2}}\] done clear
  C)
             \[{{H}_{2}}\]                          done clear
  D)
             \[{{O}_{2}}\] done clear
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• question_answer21)
  The density of gold is \[19\ g/c{{m}^{3}}\]. If \[1.9\times {{10}^{-4}}g\]of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, then the number of gold particles per \[m{{m}^{3}}\] of the sol will be      [Pb.CET 2004]
  A)
             \[1.9\times {{10}^{12}}\] done clear
  B)
             \[6.3\times {{10}^{14}}\] done clear
  C)
             \[6.3\times {{10}^{10}}\] done clear
  D)
             \[2.4\times {{10}^{6}}\] done clear
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• question_answer22)
  Which of the following forms cationic miscelles above certain concentration                                        [CBSE PMT 2004]
  A)
             Urea                                         done clear
  B)
             Cetyltrimethylammonium bromide done clear
  C)
             Sodium dodecyl sulphate done clear
  D)
             Sodium acetate done clear
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