Banking Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank

done Nature of Matter Total Questions - 36

• question_answer1)
  Air is regarded as a mixture because
  A)
  its pressure may very done clear
  B)
  its temperature may change done clear
  C)
  its volume changes under different conditions done clear
  D)
  its composition may vary done clear
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• question_answer2)
  Which of the following is a compound?
  A)
   Stainless steel                done clear
  B)
   Bronze done clear
  C)
   Graphite             done clear
  D)
          Hydrogen sulphide done clear
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• question_answer3)
  The process used to separate oil and water is
  A)
   distillation                     done clear
  B)
   sublimation done clear
  C)
   separating funnel            done clear
  D)
   chromatography done clear
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• question_answer4)
  In which of the following the constituents are present in any ratio?
  A)
   Mixture                           done clear
  B)
   Compound done clear
  C)
   Solution             done clear
  D)
          Colloid done clear
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• question_answer5)
  A mixture of common salt, sulphur, sand and iron filings is shaken with carbon disulphide and filtered through a filter paper. The filtrate is evaporated to dryness in a china dish. What will be left in the dish after evaporation?
  A)
   Sand                            done clear
  B)
   Sulphur   done clear
  C)
   Iron filings           done clear
  D)
          Common salt done clear
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• question_answer6)
  Two substances A and B when brought together form a substance C with the evolution of heat. The properties of C are entirely different from those of A and B. The substance C is
  A)
   a compound                    done clear
  B)
   an element done clear
  C)
   a mixture            done clear
  D)
          none of these. done clear
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• question_answer7)
  Camphor can be purified by
  A)
   distillation                     done clear
  B)
   filtration done clear
  C)
   sedimentation      done clear
  D)
          sublimation   done clear
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• question_answer8)
  Which one of the following will result in the formation of a mixture?
  A)
   Crushing of a marble tile into small particles done clear
  B)
   Breaking of ice cubes into small pieces done clear
  C)
   Adding sodium metal to water done clear
  D)
   Adding milk in water   done clear
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• question_answer9)
  Purity of a solid substance can be checked by its
  A)
   boiling point                  done clear
  B)
   melting point   done clear
  C)
   solubility in water           done clear
  D)
   solubility in alcohol done clear
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• question_answer10)
  A mixture of ethanol and water can be separated by
  A)
   filtration                        done clear
  B)
   decantation done clear
  C)
   fractional distillation         done clear
  D)
   sublimation done clear
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• question_answer11)
  Salt can be obtained from sea water by
  A)
   filtration                        done clear
  B)
   decantation done clear
  C)
   evaporation                     done clear
  D)
   sublimation done clear
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• question_answer12)
  A sample contains two substances and has uniform properties. The sample is
  A)
   a compound                  done clear
  B)
   a heterogeneous mixture done clear
  C)
   an element           done clear
  D)
   a homogeneous mixture   done clear
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• question_answer13)
  Which of the following is considered to be a pure substance?
  A)
   Granite                         done clear
  B)
   Sodium chloride   done clear
  C)
   Muddy water                 done clear
  D)
   Milk of magnesia done clear
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• question_answer14)
  Physical properties of a mixture
  A)
   vary with the amount of substance. done clear
  B)
   depend on the volume of the substance done clear
  C)
   depend on the organization of the substance done clear
  D)
   vary depending upon its components   done clear
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• question_answer15)
  Compounds
  A)
   are the same as mixtures done clear
  B)
   can be separated by their physical properties done clear
  C)
   contain only one type of element done clear
  D)
   are different kinds of atoms chemically combined with each other.   done clear
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• question_answer16)
  White gold is used in jewelry and contains two elements, gold and palladium. A jeweler has two different samples that are both identical in appearance and have a uniform composition throughout. What can be said about the samples?
  A)
   They are homogeneous mixtures and be classified as metallic alloys.   done clear
  B)
   The materials are heterogeneous mixtures and can be classified by their components done clear
  C)
   The samples have variable compositions and are classified as metallic solutions. done clear
  D)
   The samples are heterogeneous mixtures that can be separated using magnetic properties. done clear
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• question_answer17)
  Which of the following is an example of a heterogeneous substance?
  A)
   Bottled water                 done clear
  B)
   Table salt done clear
  C)
   Pieces of copper             done clear
  D)
   Candle   done clear
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• question_answer18)
  Which of the following is an example of a homogeneous substance?
  A)
   Granite                         done clear
  B)
   Copper sulphate   done clear
  C)
   Oil-water solution           done clear
  D)
   Muddy water done clear
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• question_answer19)
  Filtration can be used to separate
  A)
   solids from solids            done clear
  B)
   liquids from solids   done clear
  C)
   liquids from liquids         done clear
  D)
   liquids from gases done clear
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• question_answer20)
  Melting points can separate materials because
  A)
   substances melt at different temperatures   done clear
  B)
   molecules vibrate rapidly when heated done clear
  C)
   heat causes molecules to disintegrate done clear
  D)
   many substances fuse at the melting point done clear
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• question_answer21)
  Distillation is a good separation technique for
  A)
   solids                            done clear
  B)
   liquids   done clear
  C)
   solid alloys           done clear
  D)
          gases done clear
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• question_answer22)
  Solubility is a good separation technique for
  A)
   pure metals                   done clear
  B)
   noble gases done clear
  C)
   different salts          done clear
  D)
         metallic alloys done clear
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• question_answer23)
  Magnetism is most beneficial for separating
  A)
   gases and non-metallic liquids done clear
  B)
   magnetic solids and solids such as sulfur   done clear
  C)
   non-metallic solids and solids such as sulfur done clear
  D)
   non-magnetic solids from non-magnetic liquids done clear
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• question_answer24)
  Select the one that is a chemical change.
  A)
   Melting of wax               done clear
  B)
   Freezing of water done clear
  C)
   Cooking of food               done clear
  D)
   None of these done clear
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• question_answer25)
  Select the one that is a physical change.
  A)
   Digestion of food            done clear
  B)
   Growth of plant done clear
  C)
   Rusting of iron               done clear
  D)
   None of these   done clear
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• question_answer26)
  On passing through a colloidal solution, the beam of light gets..........
  A)
   reflected                        done clear
  B)
   refracted done clear
  C)
   scattered               done clear
  D)
          absorbed done clear
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• question_answer27)
  The size of colloidal particles usually lies in the range
  A)
   \[{{10}^{-5}}-{{10}^{-7}}cm\]            done clear
  B)
   \[{{10}^{-7}}-{{10}^{-9}}cm\] done clear
  C)
   \[{{10}^{-3}}-{{10}^{-5}}cm\]     done clear
  D)
          \[{{10}^{-2}}-{{10}^{-6}}cm\] done clear
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• question_answer28)
  Brass is an example of
  A)
   compound                    done clear
  B)
   element done clear
  C)
   homogeneous mixture   done clear
  D)
   heterogeneous mixture done clear
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• question_answer29)
  Select the one that is not a chemical change?
  A)
   Dissolution of ammonia in water. done clear
  B)
   Dissolution of carbon dioxide in water. done clear
  C)
   Dissolution of oxygen in water.   done clear
  D)
   None of these is a chemical change. done clear
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• question_answer30)
  A change is said to be a chemical change when
  A)
   it is accompanied by energy change done clear
  B)
   it is accompanied by formation of new substances done clear
  C)
   it is accompanied by change in physical properties done clear
  D)
   All the above are correct   done clear
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• question_answer31)
  Solutions with low concentrations of solutes are
  A)
   concentrated                 done clear
  B)
   dilute   done clear
  C)
   solvents                        done clear
  D)
   None of these done clear
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• question_answer32)
  Which of the following statements is true about a colloidal system?
  A)
   It carries a net electric charge done clear
  B)
   It consists of one phase only done clear
  C)
   It can be made out of two gases done clear
  D)
   It is electrically neutral as a whole   done clear
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• question_answer33)
  Cloud or fog is an example of colloidal system of
  A)
   liquid dispersed in gas   done clear
  B)
   gas dispersed in gas done clear
  C)
   solid dispersed in gas done clear
  D)
   solid dispersed in liquid done clear
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• question_answer34)
  Normal solution is :
  A)
   inert solution done clear
  B)
   acidic solution done clear
  C)
   one litre containing one equivalent   done clear
  D)
   basic solution done clear
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• question_answer35)
  Which of the following is a colloid?
  A)
   Sugar solution               done clear
  B)
   Urea solution done clear
  C)
   Silicic acid                      done clear
  D)
   NaCI solution done clear
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• question_answer36)
  When dispersed phase is liquid and dispersion medium is gas then the colloidal system is called
  A)
   smoke                          done clear
  B)
   clouds   done clear
  C)
   jellies                            done clear
  D)
   emulsions done clear
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