Banking Chemistry General Concepts of Chemistry Question Bank

done General Concepts of Chemistry Total Questions - 40

• question_answer1)
  \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] represent the compound
  A)
   sodium sulphate             done clear
  B)
   sodium sulphite done clear
  C)
   sodium thiosulphate     done clear
  D)
   None of these done clear
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• question_answer2)
  Which one is a bivalent ion?
  A)
   sodium                         done clear
  B)
   calcium   done clear
  C)
   sulphide               done clear
  D)
          Both [b] and [c] done clear
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• question_answer3)
  The chromate and dicharomate ions are respectively
  A)
   \[CrO_{4}^{{{2}^{-}}}\] and \[C{{r}_{2}}O_{7}^{2-}\]      done clear
  B)
   \[C{{r}_{2}}O_{7}^{2-}\] and \[CrO_{4}^{-}\] done clear
  C)
   \[CrO_{4}^{-}\] and \[CrO_{5}^{-}\] done clear
  D)
          \[CrO_{4}^{2-}\] and \[CrO_{5}^{2-}\] done clear
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• question_answer4)
  The formula of sodium pyrophosphate is
  A)
   \[N{{a}_{2}}{{P}_{2}}{{O}_{7}}\]                 done clear
  B)
   \[N{{a}_{3}}P{{O}_{4}}\] done clear
  C)
   \[N{{a}_{4}}{{P}_{2}}{{O}_{7}}\]               done clear
  D)
          \[N{{a}_{3}}P{{O}_{3}}\] done clear
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• question_answer5)
  The branch of chemistry which deals with study of physical properties and conditions is
  A)
   physical chemistry   done clear
  B)
   analytical chemistry done clear
  C)
   nuclear chemistry done clear
  D)
   pharmaceutical chemistry done clear
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• question_answer6)
  The branch of chemistry which deals with study of the methods of detection and determination of elements and compounds is
  A)
   Physical chemistry         done clear
  B)
   Nuclear chemistry done clear
  C)
   Analytical chemistry         done clear
  D)
   Bio chemistry done clear
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• question_answer7)
  Valency of an atom or radicals is
  A)
   ionisation energy      done clear
  B)
   electron affinity of atom done clear
  C)
   its combining capacity   done clear
  D)
   size of atom done clear
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• question_answer8)
  When electrons are added the resulting ion is called
  A)
   basic radical                  done clear
  B)
   acidic radicals   done clear
  C)
   neutral radical               done clear
  D)
   None of these done clear
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• question_answer9)
  Which of the following is most unreactive?
  A)
    Mg done clear
  B)
   \[M{{g}^{+}}\] done clear
  C)
   \[M{{g}^{2+}}\]   done clear
  D)
   All above species are inert done clear
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• question_answer10)
  Chemical formula of Aluminium sulphate is
  A)
   \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]                  done clear
  B)
   \[AlS{{O}_{4}}\] done clear
  C)
   \[A{{l}_{3}}{{(S{{O}_{4}})}_{2}}\]           done clear
  D)
         None of these done clear
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• question_answer11)
  Select the one that represents a displacement reaction.
  A)
   \[NaCl+AgN{{O}_{3}}\to AgCl+NaN{{O}_{3}}\] done clear
  B)
   \[Zn+CuS{{O}_{4}}\to ZnS{{O}_{4}}+Cu\]   done clear
  C)
   \[HCl+NaOH\to NaCl+{{H}_{2}}O\] done clear
  D)
   \[C+{{O}_{2}}\to C{{O}_{2}}\] done clear
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• question_answer12)
  Which one is a combination reaction?
  A)
   Formation of a mixture of carbon monoxide and hydrogen. When steam is passed over red hot iron. done clear
  B)
   Reaction of water with sodium metal to form sodium hydroxide and hydrogen. done clear
  C)
   \[Ca{{(OH)}_{2}}+N{{a}_{2}}C{{O}_{3}}\to 2NaOH+CaC{{O}_{3}}\downarrow \] done clear
  D)
   Preparation of stannic chloride (Tin (iv) chloride) by passing chlorine gas into molten tin (Sn).   done clear
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• question_answer13)
  Which of the following involves combination of two elements?
  A)
   \[CaO+C{{O}_{2}}\to CaC{{O}_{3}}\] done clear
  B)
   \[4Na+{{O}_{2}}\to 2N{{a}_{2}}O\]   done clear
  C)
   \[2S{{O}_{2}}+{{O}_{2}}\to 2S{{O}_{3}}\] done clear
  D)
   \[N{{H}_{3}}+HCl\to N{{H}_{4}}Cl\] done clear
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• question_answer14)
  When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is formed. This is an example of
  A)
   combination reaction done clear
  B)
   displacement reaction done clear
  C)
   decomposition reaction done clear
  D)
   double decomposition reaction   done clear
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• question_answer15)
  Which one is a decomposition reaction?
  A)
   \[2HgO\xrightarrow{heat}2Hg+{{O}_{2}}\] done clear
  B)
   \[CaC{{O}_{3}}\xrightarrow{heat}CaO+C{{O}_{2}}\] done clear
  C)
   \[2{{H}_{2}}O\xrightarrow{Electrolysis}2{{H}_{2}}+{{O}_{2}}\] done clear
  D)
   All the above reactions are decomposition reaction   done clear
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• question_answer16)
  The reactions in which two compounds exchange their radicals to form two new compounds are called
  A)
   displacement reaction done clear
  B)
   decomposition reaction done clear
  C)
   double displacement reaction   done clear
  D)
   isomerisation reaction done clear
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• question_answer17)
  \[CuO+{{H}_{2}}\to Cu+{{H}_{2}}O\]Above reaction is an example of
  A)
   Redox reaction   done clear
  B)
   synthesis reaction done clear
  C)
   neutralisation reaction done clear
  D)
   decomposition reaction done clear
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• question_answer18)
  In the reaction : \[PbO+C\to Pb+CO\]
  A)
   PbO is oxidised              done clear
  B)
   PbO is oxidant done clear
  C)
   C is reductant                done clear
  D)
   Both [b] and [c]   done clear
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• question_answer19)
  Chemical equations are balanced in accordance with the
  A)
   Dalton's law done clear
  B)
   Law of conservation of mass   done clear
  C)
   Law of definite composition done clear
  D)
   None of these done clear
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• question_answer20)
  Which is not a balanced equation?
  A)
   \[NaOH+HCl\to NaCl+{{H}_{2}}O\] done clear
  B)
   \[Mg+CuS{{O}_{4}}\to MgS{{O}_{4}}+Cu\] done clear
  C)
   \[Fe+C{{l}_{2}}\to FeC{{l}_{3}}\]   done clear
  D)
   \[Mg+2HN{{O}_{3}}\to Mg{{(N{{O}_{3}})}_{2}}+{{H}_{2}}\] done clear
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• question_answer21)
  Which of the following statements is true about chemical equation?
  A)
   Mass is conserved done clear
  B)
   Atoms are conserved done clear
  C)
   Mass as well as atoms are conserved   done clear
  D)
   Molecules are conserved done clear
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• question_answer22)
  A molal solution is one that contains 1 mole of a solute in
  A)
   one litre of the solvent done clear
  B)
   1000 got the solvent   done clear
  C)
   one litre of the solution done clear
  D)
   22.4 litres of the solution done clear
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• question_answer23)
  The total number of atoms represented by the compound \[CuS{{O}_{4}}.\,5{{H}_{2}}O\]is
  A)
   27                    done clear
  B)
   21   done clear
  C)
   5                     done clear
  D)
          8 done clear
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• question_answer24)
  The molecular formula \[{{P}_{2}}{{O}_{5}}\] mean s that
  A)
   a molecule contains 2 atoms of P and 5 atoms of O   done clear
  B)
   the ratio of the mass of P to the mass of O in the molecule is 2 : 5 done clear
  C)
   there are twice as many P atoms in the molecule as there are O atoms done clear
  D)
   the ratio of the mass of P to the mass of O in the molecule is 5 : 2 done clear
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• question_answer25)
  The empirical formula and molecular mass of a compound are \[C{{H}_{2}}O\] and 180 g respectively what will be the molecular formula of the compound?
  A)
   \[{{C}_{9}}{{H}_{18}}{{O}_{9}}\]                done clear
  B)
   \[C{{H}_{2}}O\] done clear
  C)
   \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]          done clear
  D)
          \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\] done clear
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• question_answer26)
  The empirical formula of a compound is One mole of this compound has a mass of 42 grams. Its molecular formula is:
  A)
   \[{{C}_{3}}{{H}_{6}}\]                                    done clear
  B)
   \[{{C}_{3}}{{H}_{8}}\] done clear
  C)
   \[C{{H}_{2}}\]            done clear
  D)
          \[{{C}_{2}}{{H}_{2}}\] done clear
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• question_answer27)
  Which of the following statements is not correct?
  A)
   A chemical equations tells us about the substances involved in a reaction. done clear
  B)
   A chemical equations informs us about the symbols and formula of substances involved in a reaction done clear
  C)
   A chemical equations tells us about the atom or molecules of the reactants and products involved in a reaction done clear
  D)
   All are correct   done clear
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• question_answer28)
  \[AgN{{O}_{3}}(aq)\to AgCl(s)+NaN{{O}_{3}}(aq)\]Above reaction is -
  A)
   precipitation reaction done clear
  B)
   double displacement reaction done clear
  C)
   combination reaction done clear
  D)
   Both [a] and [b]   done clear
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• question_answer29)
  A redox reaction is one in which -
  A)
   both the substance are reduced done clear
  B)
   both the substance are oxidized done clear
  C)
   an acid is neutralised by the base done clear
  D)
   one substance is oxidised while the other is reduced   done clear
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• question_answer30)
  An organic compound containing C, H and N gave the following analysis: C = 40% ; H= 13.33%; N = 46.67% Its empirical formula would be
  A)
   \[{{C}_{2}}{{H}_{7}}{{N}_{2}}\]                  done clear
  B)
   \[C{{H}_{5}}N\] done clear
  C)
   \[C{{H}_{4}}N\]            done clear
  D)
          \[{{C}_{2}}{{H}_{7}}N\] done clear
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• question_answer31)
  An organic compound containing C, H and 0 gave on analysis C - 40% and H - 6.66%. Its empirical formula would be
  A)
   \[{{C}_{3}}{{H}_{6}}O\]                    done clear
  B)
   CHO done clear
  C)
   \[C{{H}_{2}}O\]             done clear
  D)
          \[C{{H}_{4}}O\] done clear
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• question_answer32)
  Slow eating away of iron articles in the presence of moist air is called
  A)
   galvanisation     done clear
  B)
   crystallization done clear
  C)
   rusting              done clear
  D)
          neutralization done clear
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• question_answer33)
  Which of the following reaction is endothermic?
  A)
   \[C+{{O}_{2}}\to C{{O}_{2}}\] done clear
  B)
   \[CaC{{O}_{3}}\to CaO+C{{O}_{2}}\]   done clear
  C)
   \[C{{H}_{4}}+2{{O}_{2}}\to C{{O}_{2}}+2{{H}_{2}}O\] done clear
  D)
   \[CaO+{{H}_{2}}\to Ca{{(OH)}_{2}}\] done clear
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• question_answer34)
  The observation that does not indicate a chemical reaction is
  A)
   change of temperature done clear
  B)
   change of colour done clear
  C)
   evolution of a gas done clear
  D)
   None of these   done clear
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• question_answer35)
  Which one of the following is not an exothermic reaction?
  A)
   Respiration done clear
  B)
   Slaking of lime done clear
  C)
   Burning of a candle done clear
  D)
   Dipping of iron block in water   done clear
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• question_answer36)
  Which of the following statement is not correct? To prevent food from getting rancid, we
  A)
   store the food in air-tight containers done clear
  B)
   add antioxidants done clear
  C)
   flush bags of chips with an inert gas done clear
  D)
   increase the temperature of the food   done clear
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• question_answer37)
  In the following equations : \[NaC{{O}_{3}}+xHCl\to 2NaCl+C{{O}_{2}}+{{H}_{2}}O\]the value x is
  A)
   1                     done clear
  B)
   2   done clear
  C)
   3                     done clear
  D)
          4 done clear
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• question_answer38)
  Which of the following is not an endothermic process?
  A)
   Boiling of water done clear
  B)
   Dissolving salts in water done clear
  C)
   Dissolving cone. \[{{H}_{2}}S{{O}_{4}}\] in water   done clear
  D)
   Evaporation of water done clear
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• question_answer39)
   Rusting of an iron is an example of
  A)
   reduction                      done clear
  B)
   ionization done clear
  C)
   oxidation                        done clear
  D)
   dissociation done clear
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• question_answer40)
  Which of the following does not corrode when exposed to the atmosphere?
  A)
   Iron                  done clear
  B)
   Copper done clear
  C)
   Gold                 done clear
  D)
   Silver done clear
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