JEE Main & Advanced Chemistry Analytical Chemistry Question Bank

done Volumetric Analysis Total Questions - 98

• question_answer1)
  What weight of sodium hydroxide is required to neutralise 100 ml of 0.1 \[N-HCl\] [MP PMT 1994]
  A)
  4.0 gm done clear
  B)
  0.04 gm done clear
  C)
  0.4 gm done clear
  D)
  2.0 gm done clear
  View Solution play_arrow

• question_answer2)
  The range of methyl orange as an indicator is in between \[pH\] [CPMT 1984]
  A)
  6 - 8 done clear
  B)
  8 - 9 done clear
  C)
  3 - 5 done clear
  D)
  2 - 4 done clear
  View Solution play_arrow

• question_answer3)
  Phenolphthalein is not a good indicator for titrating [NCERT 1977]
  A)
  \[NaOH\] against oxalic acid done clear
  B)
  Ferrous sulphate against \[KMn{{O}_{4}}\] done clear
  C)
  \[NaOH\] against \[HCl\] done clear
  D)
  \[NaOH\] against \[{{H}_{2}}S{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer4)
  15 ml of \[{N}/{10}\;\]  \[NaOH\] solution completely neutralises 12 ml of \[{{H}_{2}}S{{O}_{4}}\] solution. The normality of \[{{H}_{2}}S{{O}_{4}}\] solution will be [MP PET 1995]
  A)
  \[{N}/{5}\;\] done clear
  B)
  \[{N}/{10}\;\] done clear
  C)
  \[{N}/{{}}\;8\] done clear
  D)
  \[N\] done clear
  View Solution play_arrow

• question_answer5)
  A 100 ml solution of 0.1 \[N-HCl\] was titrated with 0.2 \[N-NaOH\] solution. The titration was discontinued after adding 30 ml of \[NaOH\] solution. The remaining titration was completed by adding 0.25 \[N-KOH\] solution. The volume of \[KOH\] required for completing the titration is [MP PMT 1997]
  A)
  16 ml done clear
  B)
  32 ml done clear
  C)
  35 ml done clear
  D)
  70 ml done clear
  View Solution play_arrow

• question_answer6)
  In 1gram of a metal oxide, metal precipitated is 0.68gram. what is the equivalent weight of metal [JIPMER 2002]
  A)
  17 done clear
  B)
  34 done clear
  C)
  68 done clear
  D)
  52 done clear
  View Solution play_arrow

• question_answer7)
  If 20 ml of 0.25 N strong acid and 30 ml of 0.2 N of strong base are mixed, then the resulting solution is [KCET 2002]
  A)
  0.25 N basic done clear
  B)
  0.2 N acidic done clear
  C)
  0.25 N acidic done clear
  D)
  0.2 N basic done clear
  View Solution play_arrow

• question_answer8)
  What volume at N.T.P. of gaseous \[N{{H}_{3}}\]will be required to be passed into 30 ml of\[N{{H}_{2}}S{{O}_{4}}\]solution to bring down the acid strength of this solution to 0.2 N [UPSEAT 2001]
  A)
  357.2 ml done clear
  B)
  444.4 ml done clear
  C)
  537.6 ml done clear
  D)
  495.6 ml done clear
  View Solution play_arrow

• question_answer9)
  8 ml of \[\frac{N}{10}HCl\] are required to neutralize 20 ml solution of \[N{{a}_{2}}C{{O}_{3}}\] in water. Normality of \[N{{a}_{2}}C{{O}_{3}}\] solution is
  A)
  0.40 N done clear
  B)
  0.040 N done clear
  C)
  4.0 N done clear
  D)
  1.4 N done clear
  View Solution play_arrow

• question_answer10)
  Required amount of crystalline oxalic acid (eq. wt. = 63) to prepare \[{N}/{10}\;\] 250 ml oxalic acid solution is [MP PMT 1996]
  A)
  0.158 g done clear
  B)
  1.575 g done clear
  C)
  15.75 g done clear
  D)
  6.3 g done clear
  View Solution play_arrow

• question_answer11)
  15 ml of 0.2 N alkali is required to complete neutralization of 30 ml acid solution. Concentration of the acid solution is [NCERT 1985; CPMT 1986]
  A)
  0.1 N done clear
  B)
  0.3 N done clear
  C)
  0.15 N done clear
  D)
  0.4 N done clear
  View Solution play_arrow

• question_answer12)
  200 ml 0.6 N  \[{{H}_{2}}S{{O}_{4}}\] and 100 ml of \[0.3N\] \[HCl\] are mixed together. Acidic normality of the resultant solution is [DPMT 1991]
  A)
  0.5 N done clear
  B)
  0.9 N done clear
  C)
  0.3 N done clear
  D)
  0.6 N done clear
  View Solution play_arrow

• question_answer13)
  10 ml of 10 M \[{{H}_{2}}S{{O}_{4}}\] is mixed to 100 ml 1M \[NaOH\] solution. The resultant solution will be [NCERT 1971]
  A)
  Acidic done clear
  B)
  Neutral done clear
  C)
  Weakly alkaline done clear
  D)
  Strongly alkaline done clear
  View Solution play_arrow

• question_answer14)
  Volume of 0.1 M \[{{H}_{2}}S{{O}_{4}}\] required to neutralize 30 ml of 0.2 N \[NaOH\] is [EAMCET 1978; MP PMT 2001]
  A)
  30 ml done clear
  B)
  15 ml done clear
  C)
  40 ml done clear
  D)
  60 ml done clear
  View Solution play_arrow

• question_answer15)
  \[5N\] \[{{H}_{2}}S{{O}_{4}}\] was diluted from 1 litre to 10 litres. Normality of the solution obtained is
  A)
  10 N done clear
  B)
  5 N done clear
  C)
  1 N done clear
  D)
  0.5 N done clear
  View Solution play_arrow

• question_answer16)
  0.45 g of an acid (mol wt. = 90) required 20 ml of 0.5 N \[KOH\] for complete neutralization. Basicity of acid is [CPMT 1979]
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer17)
  Equivalent weight of crystaline oxalic acid is [MP PMT 1995]
  A)
  12 done clear
  B)
  63 done clear
  C)
  53 done clear
  D)
  40 done clear
  View Solution play_arrow

• question_answer18)
  Volume of \[\frac{N}{10}{{H}_{2}}S{{O}_{4}}\] required to neutralize 10 ml 5 N \[N{{a}_{2}}C{{O}_{3}}\] is
  A)
  100 ml done clear
  B)
  50 ml done clear
  C)
  500 ml done clear
  D)
  1000 ml done clear
  View Solution play_arrow

• question_answer19)
  The equivalent weight of KMnO4 in alkaline medium will be [MP PMT 2001]
  A)
  31.60 done clear
  B)
  52.66 done clear
  C)
  79.00 done clear
  D)
  158.00 done clear
  View Solution play_arrow

• question_answer20)
  An aqueous solution of 6.3g oxalic acid dehydrate is made up to 250 ml. The volume of 0.1N NaOH required to completely neutralize 10 ml of this solution is [IIT-JEE (Screening) 2001]
  A)
  40 ml done clear
  B)
  20 ml done clear
  C)
  10 ml done clear
  D)
  4 ml done clear
  View Solution play_arrow

• question_answer21)
  In the standardization of \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]using\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]by iodometry, the equivalent weight of\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] is   [IIT-JEE  (Screening) 2001]
  A)
  (Molecular weight)/2 done clear
  B)
  (Molecular weight)/6 done clear
  C)
  (Molecular weight)/3 done clear
  D)
  Same as molecular weight done clear
  View Solution play_arrow

• question_answer22)
  25 ml of a solution of\[N{{a}_{2}}C{{O}_{3}}\]having a specific gravity of 1.25 required 32.9 ml of a solution of HCl containing 109.5 grams of the acid per litre for complete neutralization. Calculate the volume of \[0.84N{{H}_{2}}S{{O}_{4}}\] that will be completely neutralized by 125 grams of the\[N{{a}_{2}}C{{O}_{3}}\]solution [UPSEAT 2001]
  A)
  460 ml done clear
  B)
  540 ml done clear
  C)
  480 ml done clear
  D)
  470 ml done clear
  View Solution play_arrow

• question_answer23)
  The volume of 0.05 M \[{{H}_{2}}S{{O}_{4}}\] required to neutralise 80 ml of 0.13 N \[NaOH\] will be [CPMT 1989]
  A)
  104 ml done clear
  B)
  52 ml done clear
  C)
  10.4 ml done clear
  D)
  26 ml done clear
  View Solution play_arrow

• question_answer24)
  How many grams of \[NaOH\] will be required to prepare 250 ml of 0.1 M solution [EAMCET 1978]
  A)
  1 gm done clear
  B)
  4 gms done clear
  C)
  40 gms done clear
  D)
  10 gms done clear
  View Solution play_arrow

• question_answer25)
  Molecular weight of oxalic acid is 126. The weight of oxalic acid required to neutralise 100 cc of normal solution of \[NaOH\] is  [NCERT 1973]
  A)
  6.3 gm done clear
  B)
  126 gm done clear
  C)
  530 gm done clear
  D)
  63 gm done clear
  View Solution play_arrow

• question_answer26)
  Concentrated \[HCl\] is 10 N, 1000 cc of \[1N\] \[HCl\] can be obtained by diluting [EAMCET 1978]
  A)
  1 cc of conc. \[HCl\] to 1000 cc done clear
  B)
  10 cc of conc. \[HCl\] to 1000 cc done clear
  C)
  20 cc of conc. \[HCl\] to 1000 cc done clear
  D)
  100 cc of conc. \[HCl\] to 1000 cc done clear
  View Solution play_arrow

• question_answer27)
  The equivalent weight of an acid is equal to [AIIMS 1998]
  A)
  Molecular weight ´ acidity done clear
  B)
  Molecular weight ´ basicity done clear
  C)
  Molecular weight / basicity done clear
  D)
  Molecular weight / acidity done clear
  View Solution play_arrow

• question_answer28)
  A metal oxide is reduced by heating it in a stream of hydrogen. It is found that after complete reduction, 3.15 g of the oxide have yielded 1.05 of the metal. We may deduce that [MP PMT 2003]
  A)
  The eq. weight of the metal is 8 done clear
  B)
  The atomic weight of the metal is 8 done clear
  C)
  The atomic weight of the metal is 4 done clear
  D)
  The eq. weight of the metal is 4 done clear
  View Solution play_arrow

• question_answer29)
  The molecular weight of a tribasic acid is M. What will be its equivalent weight [CPMT 1974, 79; MP PMT 2003]
  A)
  \[\frac{M}{2}\] done clear
  B)
  M done clear
  C)
  \[\frac{M}{3}\] done clear
  D)
  \[\sqrt{\frac{M}{3}}\] done clear
  View Solution play_arrow

• question_answer30)
  Which of the following plot represents the graph of pH against volume of alkali added in the titration of NaOH and HCl [Orrisa JEE 2002]
  A)
  done clear
  B)
  done clear
  C)
  done clear
  D)
  done clear
  View Solution play_arrow

• question_answer31)
                                           Phenolphthalein is not suitable for the titration of [MP PMT 2003]
  A)
  \[NaOHvs{{\left( COOH \right)}_{2}}\] done clear
  B)
  \[KOH\text{ }vs\text{ }{{H}_{2}}S{{O}_{4}}\] done clear
  C)
  \[{{K}_{2}}C{{O}_{3}}vsHCl\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer32)
  In order to prepare one litre normal solution of KMnO4, how many gm of KMnO4 are required, if the solution is to be used in acid medium for oxidation [MP PET 2002]
  A)
  158 gm done clear
  B)
  31.60 gm done clear
  C)
  62.0 gm done clear
  D)
  790 gm done clear
  View Solution play_arrow

• question_answer33)
  20 ml of a solution of a weak monobasic acid neutralizes 22.18 ml of a solution of NaOH and 20 ml of N/10 HCl neutralizes 21.5 ml of the same NaOH solution. The normality for the acid is nearly [MP PET 2002]
  A)
  10 N done clear
  B)
  1 N done clear
  C)
  0.10 N done clear
  D)
  100 N done clear
  View Solution play_arrow

• question_answer34)
  How many ml of 1 (M) \[{{H}_{2}}S{{O}_{4}}\] is required to neutralise 10 ml of 1(M) \[NaOH\] solution [MP PET 1997; MP PMT 1999]
  A)
  2.5 done clear
  B)
  5.0 done clear
  C)
  10.0 done clear
  D)
  20.0 done clear
  View Solution play_arrow

• question_answer35)
  The maximum amount of \[BaS{{O}_{4}}\] precipitated on mixing \[BaC{{l}_{2}}\] (0.5M) with \[{{H}_{2}}S{{O}_{4}}\] (1M) will correspond to [AIIMS 1997]
  A)
  0.5 M done clear
  B)
  1.0 M done clear
  C)
  1.5 M done clear
  D)
  2.0 M done clear
  View Solution play_arrow

• question_answer36)
  How many grams of \[NaOH\] are equivalent to 100 ml of 0.1 N oxalic acid
  A)
  0.2 done clear
  B)
  2.0 done clear
  C)
  0.4 done clear
  D)
  4.0 done clear
  View Solution play_arrow

• question_answer37)
  How much of NaOH is required to neutralize 1500 cm3 of 0.1 N HCl (At. wt. of Na = 23) [KCET (Med.) 2001]
  A)
  4 g done clear
  B)
  6 g done clear
  C)
  40 g done clear
  D)
  60 g done clear
  View Solution play_arrow

• question_answer38)
  0.126 g of an acid requires 20 ml of 0.1 N NaOH for complete neutralization. The equivalent weight of the acid is [MP PET 2001]
  A)
  45 done clear
  B)
  53 done clear
  C)
  40 done clear
  D)
  63 done clear
  View Solution play_arrow

• question_answer39)
  The ratio of amounts of H2S needed to precipitate all the metal ions from 100 ml of 1 M AgNO3 and 100 ml of 1 M CuSO4 is [MP PET 2001]
  A)
  1 : 2 done clear
  B)
  2 : 1 done clear
  C)
  Zero done clear
  D)
  Infinity done clear
  View Solution play_arrow

• question_answer40)
  The equivalent weight of a divalent metal is 31.82. The weight of a single atom is [MH CET 2000]
  A)
  \[63.64\] done clear
  B)
  \[\frac{63.64}{6.02\times {{10}^{23}}}\] done clear
  C)
  \[32.77\times 6.02\times {{10}^{23}}\] done clear
  D)
  \[63.64\times 6.02\times {{10}^{23}}\] done clear
  View Solution play_arrow

• question_answer41)
  For the preparation of sodium thiosulphate by ?Springs reaction?, the reactants used are [EAMCET 2003]
  A)
  \[N{{a}_{2}}S+N{{a}_{2}}S{{O}_{3}}+C{{l}_{2}}\] done clear
  B)
  \[Na{{}_{2}}S+S{{O}_{2}}\] done clear
  C)
  \[N{{a}_{2}}S{{O}_{3}}+S\] done clear
  D)
  \[N{{a}_{2}}S+N{{a}_{2}}S{{O}_{3}}+\] done clear
  View Solution play_arrow

• question_answer42)
  Phenolphthalein is most suitable indicator for the titration of [MP PMT 2000]
  A)
  \[C{{H}_{3}}COOH\] and \[N{{H}_{4}}OH\] done clear
  B)
  \[C{{H}_{3}}COOH\]and\[NaOH\] done clear
  C)
  HCl and \[N{{H}_{4}}OH\] done clear
  D)
  \[{{H}_{2}}C{{O}_{3}}\] and \[N{{H}_{4}}OH\] done clear
  View Solution play_arrow

• question_answer43)
  The simplest formula of a compound containing 50% of element X (at. wt. 10) and 50% of element Y (at. wt =20) is [DPMT 2000]
  A)
  \[{{X}_{2}}{{Y}_{3}}\] done clear
  B)
  \[X{{Y}_{2}}\] done clear
  C)
  \[{{X}_{2}}Y\] done clear
  D)
  \[XY\] done clear
  View Solution play_arrow

• question_answer44)
  The equivalent weight of a metal is 4.0. The vapour density of its chloride is 59.25. Its atomic weight is [DPMT 2000]
  A)
  12 done clear
  B)
  8 done clear
  C)
  36 done clear
  D)
  24 done clear
  View Solution play_arrow

• question_answer45)
  Indicator for the titration of HCl and \[N{{a}_{2}}C{{O}_{3}}\] would be [RPMT 1999]
  A)
  \[{{K}_{4}}Fe{{(CN)}_{6}}\] done clear
  B)
  \[{{K}_{3}}Fe{{(CN)}_{6}}\] done clear
  C)
  Phenolphthalein done clear
  D)
  Methyl orange done clear
  View Solution play_arrow

• question_answer46)
  20 ml of a N solution of KMnO4 just reacts with 20 ml of a solution of oxalic acid. The weight of oxalic acid crystals in 1N of the solution is [JIPMER 1999]
  A)
  31.5 g done clear
  B)
  126 g done clear
  C)
  63 g done clear
  D)
  6.3 g done clear
  View Solution play_arrow

• question_answer47)
  0.53 gm of \[N{{a}_{2}}C{{O}_{3}}\] has been dissolved in 100 ml of a sodium carbonate solution. The normality of the solution will be [MP PMT 1996]
  A)
  \[\frac{N}{5}\] done clear
  B)
  \[\frac{N}{2}\] done clear
  C)
  \[\frac{N}{10}\] done clear
  D)
  \[N\] done clear
  View Solution play_arrow

• question_answer48)
  \[2N-HCl\] will have the same molar concentration as [CPMT 1996]
  A)
   \[0.5N-{{H}_{2}}S{{O}_{4}}\] done clear
  B)
   \[1.0N-{{H}_{2}}S{{O}_{4}}\] done clear
  C)
   \[2N-{{H}_{2}}S{{O}_{4}}\] done clear
  D)
   \[4N-{{H}_{2}}S{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer49)
  Which of the following pair does not distinguish by passing \[{{H}_{2}}S\] [CPMT 1996]
  A)
  \[Hg,\] \[Pb\] done clear
  B)
  \[Cd,\]\[Pb\] done clear
  C)
  \[As,\] \[Cu\] done clear
  D)
  \[Zn,\] \[Mn\] done clear
  View Solution play_arrow

• question_answer50)
  If 100 ml of 1 N sulphuric acid were mixed with 100 ml of 1 M sodium hydroxide, the solution will be [MP PET 1999]
  A)
  Acidic done clear
  B)
  Basic done clear
  C)
  Neutral done clear
  D)
  Slightly acidic done clear
  View Solution play_arrow

• question_answer51)
  100 \[c{{m}^{3}}\] of 0.1 N \[HCl\] solution is mixed with 100 \[c{{m}^{3}}\] of 0.2 N \[NaOH\] solution. The resulting solution is [MP PET 1996]
  A)
  0.1 N and the solution is basic done clear
  B)
  0.05 N and the solution is basic done clear
  C)
  0.1 N and the solution is acidic done clear
  D)
  0.05 N and the solution is acidic done clear
  View Solution play_arrow

• question_answer52)
  For preparing 0.1 N solution of a compound from its impure sample, of which the percentage purity is known, the weight of the substance required will be [MP PET 1996]
  A)
  More than the theoretical weight done clear
  B)
  Less than the theoretical weight done clear
  C)
  Same as theoretical weight done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer53)
  The equivalent weight of\[Zn{{\left( OH \right)}_{2}}\]in the following reaction is equal to its, \[[Zn{{\left( OH \right)}_{2}}+\text{ }\left( N{{O}_{3}} \right)~Zn\left( OH \right)\left( N{{O}_{3}} \right)\text{ }+{{H}_{2}}O]\] [MH CET 1999]
  A)
  \[\frac{\text{Formula}\ \text{wt}\text{.}}{2}\] done clear
  B)
  \[\frac{\text{Formula}\ \text{wt}\text{.}}{1}\] done clear
  C)
  \[3\times \text{formula}\ \text{wt}\text{.}\] done clear
  D)
  \[2\times \text{formula}\ \text{wt}\text{.}\] done clear
  View Solution play_arrow

• question_answer54)
  In the titration of strong acid and weak base, the indicator used is [MH CET 1999]
  A)
  Thymol blue done clear
  B)
  Phenolphthalein done clear
  C)
  Thymolphthalein done clear
  D)
  Methyl orange done clear
  View Solution play_arrow

• question_answer55)
  To neutralize 25 ml of 0.25 M \[N{{a}_{2}}C{{O}_{3}}\] solution how much volume of 0.5 M \[HCl\] is required [MP PET 1994]
  A)
  12.5 ml done clear
  B)
  25 ml done clear
  C)
  37.5 ml done clear
  D)
  50 ml done clear
  View Solution play_arrow

• question_answer56)
  0.16 gm of a dibasic acid required 25 ml of decinormal \[NaOH\] solution for complete neutralization. The molecular weight of the acid is [CPMT 1989; MP PET 1993]
  A)
  32 done clear
  B)
  64 done clear
  C)
  128 done clear
  D)
  256 done clear
  View Solution play_arrow

• question_answer57)
  When 100 ml \[N-NaOH\] solution and 10 ml of 10 N sulphuric acid solution are mixed together, the resulting solution will be [DPMT 1982; MP PET 1993]
  A)
  Alkali done clear
  B)
  Weakly acidic done clear
  C)
  Strongly acidic done clear
  D)
  Neutral done clear
  View Solution play_arrow

• question_answer58)
  Cosin used to detect end point of precipitation titration by adsorption is called [KCET (Med). 2000]
  A)
  Absorption indicator done clear
  B)
  Adsorption indicator done clear
  C)
  Chemical indicator done clear
  D)
  Normal indicator done clear
  View Solution play_arrow

• question_answer59)
  0.1914g of an organic acid is dissolved in approx. 20 ml of water. 25 ml of 0.12 N NaOH required for the complete neutralization of the acid solution. The equivalent weight of the acid is [MP PET 2000]
  A)
  65 done clear
  B)
  64 done clear
  C)
  63.80 done clear
  D)
  62.50 done clear
  View Solution play_arrow

• question_answer60)
  Molecular weight of a tribasic acid is W, its equivalent weight is [CPMT 1974, 79]
  A)
  \[2W\] done clear
  B)
  \[{W}/{3}\;\] done clear
  C)
  \[3W\] done clear
  D)
  \[W-3\] done clear
  View Solution play_arrow

• question_answer61)
  Approximate atomic weight of an element is 26.89. If its equivalent weight is 8.9, the exact atomic weight of element would be [DPMT 1984]
  A)
  26.89 done clear
  B)
  8.9 done clear
  C)
  17.8 done clear
  D)
  26.7 done clear
  View Solution play_arrow

• question_answer62)
  1 gm of hydrogen is found to combine with 80 gms of bromine. 1 gm of calcium (valency 2) combines with 4 gms of bromine. The equivalent weight of calcium is [NCERT 1982]
  A)
  10 done clear
  B)
  20 done clear
  C)
  40 done clear
  D)
  80 done clear
  View Solution play_arrow

• question_answer63)
  4.0 gram caustic soda is dissolved in 100 cc solution. The normality of solution is [MP PMT 1995]
  A)
  1.0 done clear
  B)
  0.1 done clear
  C)
  0.5 done clear
  D)
  4.0 done clear
  View Solution play_arrow

• question_answer64)
  Which of the following is required to neutralize 1 litre \[N-NaOH\]
  A)
  1 \[l-N-{{H}_{2}}S{{O}_{4}}\] done clear
  B)
  1 \[l-M-{{H}_{2}}S{{O}_{4}}\] done clear
  C)
  1 \[l-2N-{{H}_{2}}S{{O}_{4}}\] done clear
  D)
  1 \[l-0.5N-{{H}_{2}}S{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer65)
  What will be the volume of \[C{{O}_{2}}\]at S.T.P., obtained by heating 9.85 g of\[BaC{{O}_{3}}\](Atomic number of \[Ba\] = 137) [MP PMT 2003]
  A)
  1.12 litre done clear
  B)
  0.84 litre done clear
  C)
  2.24 litre done clear
  D)
  4.06 litre done clear
  View Solution play_arrow

• question_answer66)
  Which indicator can be used in the titration of strong acid and strong base [CBSE PMT 1988]
  A)
  Only phenolphthalein done clear
  B)
  Only methyl orange done clear
  C)
  Either of the two done clear
  D)
  Red litmus done clear
  View Solution play_arrow

• question_answer67)
  The indicator used in titrating weak acid (e.g. oxalic acid) with a strong base (e.g. caustic soda) solution is [IIT-JEE 1985; CPMT 1990; MNR 1980; NCERT 1973, 77; MP PMT 1994]
  A)
  Methyl orange done clear
  B)
  Methyl red done clear
  C)
  Fluorescein done clear
  D)
  Phenolphthalein done clear
  View Solution play_arrow

• question_answer68)
  The pink colour of phenolphthalein in alkaline medium is [CPMT 1990]
  A)
  Due to negative form done clear
  B)
  Due to positive form done clear
  C)
  Due to \[O{{H}^{-}}\] ions done clear
  D)
  Due to neutral form done clear
  View Solution play_arrow

• question_answer69)
  Phenolphthalein does not act as an indicator for the titration between [NCERT 1976]
  A)
  \[KOH\] and \[{{H}_{2}}S{{O}_{4}}\] done clear
  B)
  \[Ba{{\left( OH \right)}_{2}}\] and \[HCl\] done clear
  C)
  \[NaOH\] and acetic acid done clear
  D)
  Oxalic acid and \[KMn{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer70)
  If we use phenolphthalein as an indicator in a titration of \[N{{a}_{2}}C{{O}_{3}}\] with \[HCl,\] the usual result is [CBSE PMT 1989]
  A)
  No visible change will occur done clear
  B)
  The indicator reacts with the acid done clear
  C)
  The indicator reacts with the base done clear
  D)
  Sodium chloride and carbonic acid will be formed done clear
  View Solution play_arrow

• question_answer71)
  Methyl orange gives red colour in [NCERT 1972]
  A)
  Sodium carbonate solution done clear
  B)
  Sodium chloride solution done clear
  C)
  Hydrochloric acid solution done clear
  D)
  Potassium hydroxide solution done clear
  View Solution play_arrow

• question_answer72)
  A 0.1 N solution of \[N{{a}_{2}}C{{O}_{3}}\] is titrated with 0.1 N \[HCl\] solution. The best indicator to be used is [NCERT 1971; DPMT 1983; AFMC 1992; CPMT 1983, 97]
  A)
  Potassium ferricyanide done clear
  B)
  Phenolphthalein done clear
  C)
  Methyl red done clear
  D)
  Litmus paper done clear
  View Solution play_arrow

• question_answer73)
  When \[KMn{{O}_{4}}\] solution is titrated with a solution containing \[F{{e}^{2+}}\] ion, the indicator used in this titration is [CPMT 1989; AIIMS 1996]
  A)
  Phenolphthalein done clear
  B)
  Methyl orange done clear
  C)
  \[{{K}_{3}}\left[ Fe{{\left( CN \right)}_{6}} \right]\] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer74)
  The strength of a solution (S) in gram/litre, is related to its normality (N) and equivalent weight of solute  by the formula [MP PMT 2003]
  A)
  \[S=\frac{N}{E}\] done clear
  B)
  \[S=\frac{E}{N}\] done clear
  C)
  \[S=N.E\] done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer75)
  The normality of 1 M solution of \[{{H}_{3}}P{{O}_{4}}\] will be [AIIMS 1983, 91]
  A)
  1 N done clear
  B)
  0.5 N done clear
  C)
  2 N done clear
  D)
  3 N done clear
  View Solution play_arrow

• question_answer76)
  In the reaction \[{{I}_{2}}+2{{S}_{2}}O_{3}^{-}\to 2{{l}^{-}}+{{S}_{4}}O_{6}^{2-};\] the equivalent weight of iodine will be equal to [MNR 1985; UPSEAT 2000]
  A)
  Molecular weight done clear
  B)
  1/2 the molecular weight done clear
  C)
  1/4 the molecular weight done clear
  D)
  Twice the molecular weight done clear
  View Solution play_arrow

• question_answer77)
  To what extent must a given solution of concentration of 40 mg silver nitrate per ml be diluted to yield a solution of concentration of 16 mg \[AgN{{O}_{3}}\] per ml [NCERT 1977]
  A)
  Each ml must be diluted to 2.5 ml done clear
  B)
  To each ml of solution 2.5 ml of water should be added done clear
  C)
  To 2.5 ml of solution 2 ml of water should be added done clear
  D)
  To 1.5 ml of solution 1.5 ml of water should be added done clear
  View Solution play_arrow

• question_answer78)
  10 ml of conc. \[{{H}_{2}}S{{O}_{4}}\] (18 molar) is diluted to 1 litre. The approximate strength of dilute acid could be [CPMT 1971]
  A)
  0.18 N done clear
  B)
  0.36 N done clear
  C)
  0.09 N done clear
  D)
  18.00 N done clear
  View Solution play_arrow

• question_answer79)
  For preparing one litre \[{N}/{10}\;\] solution of \[{{H}_{2}}S{{O}_{4}},\] we need \[{{H}_{2}}S{{O}_{4}}\] [DPMT 1982]
  A)
  98 gms done clear
  B)
  10 gms done clear
  C)
  100 gms done clear
  D)
  4.9 gms done clear
  View Solution play_arrow

• question_answer80)
  What is the concentration of nitrate ions if equal volumes of 0.1 M \[AgN{{O}_{3}}\] and 0.1 M \[NaCl\] are mixed together [NCERT 1981; CPMT 1983]
  A)
  0.1 N done clear
  B)
  0.2 M done clear
  C)
  0.05 M done clear
  D)
  0.25 M done clear
  View Solution play_arrow

• question_answer81)
  To neutralise 10 ml of \[{M}/{5}\;\]\[NaOH\] the volume of \[{M}/{20}\;\] \[HCl\] required is [EAMCET 1980]
  A)
  10 ml done clear
  B)
  15 ml done clear
  C)
  40 ml done clear
  D)
  25 ml done clear
  View Solution play_arrow

• question_answer82)
  To change the strength of 25 ml of 0.15 M \[HCl\] to 0.1 M the quantity of water that is to be added is [EAMCET 1979]
  A)
  37.5 ml done clear
  B)
  12.5 ml done clear
  C)
  25.0 ml done clear
  D)
  18.75 ml done clear
  View Solution play_arrow

• question_answer83)
  The volume of 0.1 M \[{{H}_{2}}S{{O}_{4}}\] that is needed to completely neutralise 40 ml of 0.2 M \[NaOH\] is [EAMCET 1979]
  A)
  10 ml done clear
  B)
  20 ml done clear
  C)
  40 ml done clear
  D)
  80 ml done clear
  View Solution play_arrow

• question_answer84)
  What volume of water is to be added to 50 ml of 4 N NaOH solution to obtain a 1 N solution [MP PET 2002]
  A)
  100 ml done clear
  B)
  150 ml done clear
  C)
  200 ml done clear
  D)
  250 ml done clear
  View Solution play_arrow

• question_answer85)
  In alkaline condition KMnO4 reacts as follows, \[2KMN{{O}_{4}}+\text{ }2KOH~2{{K}_{2}}Mn{{O}_{4}}+{{H}_{2}}O+O\]. The eq. wt. of \[KMn{{O}_{4}}\]is [DPMT 2000]
  A)
  79 done clear
  B)
  31.6 done clear
  C)
  158 done clear
  D)
  52.7 done clear
  View Solution play_arrow

• question_answer86)
  When a standard solution of NaOH is left in the air for a few hours, [Kerala PMT 2004]
  A)
  A precipitate will form. done clear
  B)
  Strength will decrease. done clear
  C)
  The concentration of \[N{{a}^{+}}\] ions will decrease. done clear
  D)
  All are wrong. done clear
  View Solution play_arrow

• question_answer87)
  In the iodometric estimation in laboratory, which process is involved? [Orissa JEE 2004]
  A)
  \[C{{r}^{2}}{{O}_{7}}^{2-}+{{H}^{+}}+{{I}^{-}}\to 2C{{r}^{3+}}+{{I}_{2}},\] \[{{I}_{2}}+{{S}_{2}}{{O}_{3}}^{2-}\to {{S}_{4}}{{O}_{6}}^{2-}+{{I}^{-}}\] done clear
  B)
  \[Mn{{O}_{4}}^{-}+{{H}^{+}}+{{I}^{-}}\to Mn{{O}_{2}}+{{I}_{2}}\] \[{{I}_{2}}+{{S}_{2}}{{O}_{3}}^{2-}\to {{S}_{4}}{{O}_{6}}^{2-}+{{I}^{-}}\] done clear
  C)
  \[Mn{{O}_{4}}^{-}+O{{H}^{-}}+{{I}^{-}}\to Mn{{O}_{2}}+{{I}_{2}}\] \[{{I}_{2}}+{{S}_{2}}{{O}_{3}}^{2-}\to {{S}_{4}}O_{6}^{2-}+{{I}^{-}}\] done clear
  D)
  \[C{{r}_{2}}{{O}_{7}}^{2-}+O{{H}^{-}}+{{I}^{-}}\to 2C{{r}^{3+}}+{{I}_{2}}\] \[{{I}_{2}}+{{S}_{2}}{{O}_{3}}^{2-}\to {{S}_{4}}O_{6}^{2-}+{{I}^{-}}\] done clear
  View Solution play_arrow

• question_answer88)
  What is the volume of 0.1 N-HCl required to react completely with 1.0 gm of pure calcium carbonate? [DPMT 2004]
  A)
  \[100\,c{{m}^{3}}\] done clear
  B)
  \[150\,c{{m}^{3}}\] done clear
  C)
  \[250\,c{{m}^{3}}\] done clear
  D)
  \[200\,c{{m}^{3}}\] done clear
  View Solution play_arrow

• question_answer89)
  The weight of a residue obtained by heating 2.76 g of silver carbonate is [Pb. PMT 2004]
  A)
  2.76 g done clear
  B)
  2.98 g done clear
  C)
  2.16 g done clear
  D)
  2.44 g done clear
  View Solution play_arrow

• question_answer90)
  What is the molarity of \[{{H}_{2}}S{{O}_{4}}\] solution if 25 ml is exactly neutralised with 32.63 ml of 0.164 M, NaOH [DCE 2003]
  A)
  0.107 M done clear
  B)
  0.126 M done clear
  C)
  0.214 M done clear
  D)
  -0.428 M done clear
  View Solution play_arrow

• question_answer91)
  Weight of \[Ca{{(OH)}_{2}}\]needed to prepare 250 ml of solution with pH = 13 [BVP 2004]
  A)
  0.925 g done clear
  B)
  0.0125 g done clear
  C)
  0.25 g done clear
  D)
  1 g done clear
  View Solution play_arrow

• question_answer92)
  What will be the volume of a 12 M solution, if it is equivalent to 240 ml 18 M solution [BVP 2004]
  A)
  6 litre done clear
  B)
  600 litre done clear
  C)
  400 litre done clear
  D)
  0.36 litre done clear
  View Solution play_arrow

• question_answer93)
  The volume of \[\frac{N}{10}\] NaOH require to neutralise 100 ml of \[\frac{N}{25}\] HCl is [Pb. CET 2000]
  A)
  30 ml done clear
  B)
  100 ml done clear
  C)
  40 ml done clear
  D)
  25 ml done clear
  View Solution play_arrow

• question_answer94)
  The volume of 0.6 M NaOH required to neutralise\[30c{{m}^{3}}\] of 0.4 M HCl is [Pb. CET 2001]
  A)
  40 \[c{{m}^{3}}\] done clear
  B)
  30 \[c{{m}^{3}}\] done clear
  C)
  20 \[c{{m}^{3}}\] done clear
  D)
  10 \[c{{m}^{3}}\] done clear
  View Solution play_arrow

• question_answer95)
  Solubility of iodine in water may be increased by adding [DCE 2004]
  A)
  Chloroform done clear
  B)
  Potassium iodide done clear
  C)
  Carbon disulphate done clear
  D)
  Sodium Thiosulphate done clear
  View Solution play_arrow

• question_answer96)
  If 30 ml of \[{{H}_{2}}\] and 20 ml of \[{{O}_{2}}\]reacts to form water, what is left at the end of the reaction [AFMC 2005]
  A)
  10ml of \[{{H}_{2}}\] done clear
  B)
  5ml of \[{{H}_{2}}\] done clear
  C)
  10ml of \[{{O}_{2}}\] done clear
  D)
  5ml of \[{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer97)
  The primary standard solution for estimation of \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\] is   [Orissa JEE 2005]
  A)
  \[{{I}_{2}}\] solution done clear
  B)
  \[KMn{{O}_{4}}\] done clear
  C)
  \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] done clear
  D)
  Oxalic acid done clear
  View Solution play_arrow

• question_answer98)
  Acidic solution of \[{{S}_{2}}O_{3}^{2-}\] is converted to ....... in presence of \[{{I}_{2}}\] [Orissa JEE 2005]
  A)
  \[{{S}_{4}}O_{6}^{2-}+{{I}^{-}}\] done clear
  B)
  \[SO_{4}^{2-}+{{I}^{-}}\] done clear
  C)
  \[S{{O}_{3}}+{{I}^{-}}\] done clear
  D)
  \[{{S}_{4}}O_{6}^{2-}+I_{3}^{-}\] done clear
  View Solution play_arrow