JEE Main & Advanced Chemistry Hydrogen & Its Compounds / हाइड्रोजन और इसके यौगिक Question Bank

done Water or hydride of oxygen Total Questions - 46

• question_answer1)
  Synthetic detergents are more effective in hard water than soaps because [AMU 2002]
  A)
  They are highly soluble in water done clear
  B)
  Their \[C{{a}^{++}}\] and \[M{{g}^{++}}\] salts are water soluble done clear
  C)
  Their \[C{{a}^{++}}\] and \[M{{g}^{++}}\] salts are insoluble in water done clear
  D)
  None of these done clear
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• question_answer2)
  \[{{D}_{2}}O\] is used more in [BHU 1997; CPMT 1997]
  A)
  Chemical industry done clear
  B)
  Nuclear reactor done clear
  C)
  Pharmaceutical preparations done clear
  D)
  Insecticide preparation done clear
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• question_answer3)
  Heavy water \[({{D}_{2}}O)\] is [RPET/PMT 2000; CPMT 2000]
  A)
  A product of oxygen and hydrogen done clear
  B)
  Water of mineral springs done clear
  C)
  Water obtained by repeated distillation and condensation done clear
  D)
  Ordinary water containing dissolved salts heavy metals done clear
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• question_answer4)
  Temporary hardness may be removed from water by adding [Pb. PMT 2002]
  A)
  \[CaC{{O}_{3}}\] done clear
  B)
  \[Ca{{(OH)}_{2}}\] done clear
  C)
  \[CaS{{O}_{4}}\] done clear
  D)
  HCl done clear
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• question_answer5)
  Heavy water is [AFMC 1997; UPSEAT 2003 MH CET 2003; Pb. CET 2001]
  A)
  Water containing Fe, Cr, Mn done clear
  B)
  Water at 0°C done clear
  C)
  \[{{D}_{2}}O\] done clear
  D)
  Water obtained after a number of distillations done clear
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• question_answer6)
  Heavy water is compound of [DPMT 2001; DCE 2002]
  A)
  Oxygen and heavier isotopes of hydrogen done clear
  B)
  Hydrogen and heavier isotopes of oxygen done clear
  C)
  Heavier isotopes of oxygen and hydrogen done clear
  D)
  None of these done clear
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• question_answer7)
  Which of the following pair of ions makes the water hard [AMU 2002]
  A)
  \[N{{a}^{+}},\ SO_{4}^{2-}\] done clear
  B)
  \[{{K}^{+}},\ HCO_{3}^{-}\] done clear
  C)
  \[C{{a}^{2+}},\ NO_{3}^{-}\] done clear
  D)
  \[NH_{4}^{+},\ C{{l}^{-}}\] done clear
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• question_answer8)
  Temporary hardness of water can be removed by [Pb. PMT 2001]
  A)
  Addition of potassium permagenate done clear
  B)
  Boiling done clear
  C)
  Filtration done clear
  D)
  Addition of chlorine done clear
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• question_answer9)
  When zeolite (Hydrated sodium aluminium silicate) is treated with hard water the sodium ions are exchanged with [DPMT 2000]
  A)
  \[O{{H}^{-}}\] ions done clear
  B)
  \[SO_{4}^{2-}\] ions done clear
  C)
  \[C{{a}^{2+}}\] ions done clear
  D)
  \[{{H}^{+}}\] ions done clear
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• question_answer10)
  Which of the following statements do not define the characteristic property of water? Water is a universal solvent?
  A)
  It can dissolve maximum number of compounds done clear
  B)
  It has very low dielectric constant done clear
  C)
  It has high liquid range done clear
  D)
  None of these done clear
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• question_answer11)
  The velocity of neutrons in nuclear reactor is slowed down by
  A)
  Heavy water \[({{D}_{2}}O)\] done clear
  B)
  Ordinary water \[({{H}_{2}}O)\] done clear
  C)
  Zinc rod done clear
  D)
  Fused caustic soda done clear
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• question_answer12)
  Temporary hardness of water is due to the presence of
  A)
  Magnesium bicarbonate done clear
  B)
  Calcium chloride done clear
  C)
  Magnesium sulphate done clear
  D)
  Calcium carbonate done clear
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• question_answer13)
  Which of the following is not true
  A)
  Hardness of water depends on its behaviour towards soap done clear
  B)
  The temporary hardness is due to the presence of Ca and Mg bicarbonates done clear
  C)
  Permanent hardness is due to the presence of soluble Ca and Mg sulphates, chlorides and nitrates done clear
  D)
  Permanent hardness can be removed by boiling the water done clear
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• question_answer14)
  The molarity of pure water at \[4{}^\circ C\]is
  A)
  1 M done clear
  B)
  2.5 M done clear
  C)
  5 M done clear
  D)
  55.5 M done clear
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• question_answer15)
  Which of the following is not a hard water
  A)
  Water containing \[CaC{{l}_{2}}\] done clear
  B)
  Water containing dil. HCl done clear
  C)
  Water containing \[MgS{{O}_{4}}\] done clear
  D)
  None of these done clear
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• question_answer16)
  Heavy water is used in atomic reactor as
  A)
  Coolant done clear
  B)
  Moderator done clear
  C)
  Both moderator and coolant done clear
  D)
  Neither coolant nor moderator done clear
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• question_answer17)
  Heavy water freezes at
  A)
  \[0{}^\circ C\] done clear
  B)
   \[3.8{}^\circ C\] done clear
  C)
  \[38{}^\circ C\] done clear
  D)
  \[0.38{}^\circ C\] done clear
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• question_answer18)
  The pH of \[{{D}_{2}}O\] and \[{{H}_{2}}O\] at 298 K is
  A)
  7.0, 7.0 done clear
  B)
  7.35, 7.0 done clear
  C)
  7.0, 6.85 done clear
  D)
  6.85, 7.35 done clear
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• question_answer19)
  Which of the following is not true
  A)
  Ordinary water is electrolysed more rapidly than \[{{D}_{2}}O\] done clear
  B)
  Reaction between \[{{H}_{2}}\] and \[C{{l}_{2}}\] is much faster than \[{{D}_{2}}\] and \[C{{l}_{2}}\] done clear
  C)
  \[{{D}_{2}}O\] freezes at lower temperature than \[{{H}_{2}}O\] done clear
  D)
  Bond dissociation energy for \[{{D}_{2}}\] is greater than \[{{H}_{2}}\] done clear
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• question_answer20)
  Which of the following will determine whether the given colourless liquid is water or not
  A)
  Melting done clear
  B)
  Tasting done clear
  C)
  Phosphthalein done clear
  D)
  Adding a pinch of anhydrous \[CuS{{O}_{4}}\] done clear
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• question_answer21)
  Lead pipes are not used for carrying drinking water because
  A)
  They are covered with a coating of lead carbonate done clear
  B)
  They are corroded by air and moisture done clear
  C)
  Water containing dissolved air attacks lead forming soluble hydroxide done clear
  D)
  None of these done clear
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• question_answer22)
  Which one of the following removes temporary hardness of water
  A)
  Slaked lime done clear
  B)
  Plaster of Paris done clear
  C)
  Cuprous done clear
  D)
  Hydrolith done clear
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• question_answer23)
  Which of the following will cause softening of hard water
  A)
  Passing it through cation exchange resin done clear
  B)
  Passing it through anion exchange resin done clear
  C)
  Passing it through sand done clear
  D)
  Passing it through alumina done clear
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• question_answer24)
  which of the following process permanent hardness of water can be removed, by adding [AFMC 2005]
  A)
  Sodalime done clear
  B)
  Sodiumbicarbonate done clear
  C)
  Washing soda done clear
  D)
  Sodium chloride done clear
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• question_answer25)
  Permutit is technical name given to
  A)
  Aluminates of calcium and sodium done clear
  B)
  Silicates of calcium and sodium done clear
  C)
  Hydrated silicates of aluminium and sodium done clear
  D)
  Silicates of calcium and magnesium done clear
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• question_answer26)
  The approximate mass of tritium oxide molecule is
  A)
  18 amu done clear
  B)
  20 amu done clear
  C)
  22 amu done clear
  D)
  24 amu done clear
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• question_answer27)
  Molecular weight of heavy water is
  A)
  19 done clear
  B)
  18 done clear
  C)
  17 done clear
  D)
  20 done clear
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• question_answer28)
  Water is said to be permanently hard when it contains
  A)
  Sulphates of Mg and Ca done clear
  B)
  Bicarbonates of Mg and Ca done clear
  C)
  Sulphates of Cu and Hg done clear
  D)
  Carbonates and bicarbonates of Mg and Ca done clear
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• question_answer29)
  Sodium sulphate is soluble in water but barium sulphate is insoluble because [Pb. PMT 1995]
  A)
  The hydration energy of \[N{{a}_{2}}S{{O}_{4}}\] is more than its lattice energy done clear
  B)
  The lattice energy of \[BaS{{O}_{4}}\] is more than its hydration energy done clear
  C)
  The lattice energy has no role to play in solubility done clear
  D)
  The hydration energy of \[N{{a}_{2}}S{{O}_{4}}\] is less than its lattice energy done clear
  E)
  Both a and b done clear
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• question_answer30)
  The alum used for purifying water is [EAMCET 1999]
  A)
  Ferric alum done clear
  B)
  Chrome alum done clear
  C)
  Potash alum done clear
  D)
  Ammonium alum done clear
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• question_answer31)
  Which of the following metal will not reduce \[{{H}_{2}}O\] [CPMT 1999]
  A)
  Ca done clear
  B)
  Fe done clear
  C)
  Cu done clear
  D)
  Li done clear
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• question_answer32)
  Which of the following is correct about heavy water [DCE 2002]
  A)
  Water at 4°C having maximum density is known as heavy water done clear
  B)
  It is heavier than water \[({{H}_{2}}O)\] done clear
  C)
  It is formed by the combination of heavier isotope of hydrogen and oxygen done clear
  D)
  None of these done clear
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• question_answer33)
  The boiling point of water is exceptionally high because [KCET 2001]
  A)
  There is covalent bond between H and O done clear
  B)
  Water molecule is linear done clear
  C)
  Water molecules associate due to hydrogen bonding done clear
  D)
  Water molecule is not linear done clear
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• question_answer34)
  Match list I with list II and select the correct answer using the codes given below the lists [SCRA 2001]

  	List I	List II
  1.	Heavy water	Bicarbonates of Mg and Ca in water
  2.	Temporary hard water	No foreign ions in water
  3.	Soft water	\[{{D}_{2}}O\]
  4.	Permanent hard water	Sulphates and chlorides of Mg and Ca in water

  Codes
  A)
  1-c, 2-d, 3-b, 4-a done clear
  B)
  1-b, 2-a, 3-c, 4-d done clear
  C)
  1-b, 2-d, 3-c, 4-a done clear
  D)
  1-c, 2-a, 3-b, 4-d done clear
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• question_answer35)
  The \[H-O-H\] angle in water molecule is about [AFMC 2001]
  A)
  \[90{}^\circ \] done clear
  B)
  \[180{}^\circ \] done clear
  C)
  \[102{}^\circ \] done clear
  D)
  \[105{}^\circ \] done clear
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• question_answer36)
  When two ice cubes are pressed over each other, they unite to form one cube. Which of the following forces is responsible to hold them together [AFMC 2001]
  A)
  Hydrogen bond formation done clear
  B)
  Van der Waals forces done clear
  C)
  Covalent attraction done clear
  D)
  Ionic interaction done clear
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• question_answer37)
  What is formed when calcium carbide reacts with heavy water [Manipal PMT 2001; Pb. CET 2000]
  A)
  \[{{C}_{2}}{{D}_{2}}\] done clear
  B)
  \[Ca{{D}_{2}}\] done clear
  C)
  \[C{{a}_{2}}{{D}_{2}}O\] done clear
  D)
  \[C{{D}_{2}}\] done clear
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• question_answer38)
  Pure water can be obtained from sea water by [CBSE PMT 2001]
  A)
  Centrifugation done clear
  B)
  Plasmolysis done clear
  C)
  Reverse osmosis done clear
  D)
  Sedimentation done clear
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• question_answer39)
  Action of water or dilute mineral acids on metals can give [Kerala PMT 2002]
  A)
  Monohydrogen done clear
  B)
  Tritium done clear
  C)
  Dihydrogen done clear
  D)
  Trihydrogen done clear
  E)
  \[{{D}_{2}}\] done clear
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• question_answer40)
  Metal which does not react with cold water but evolves \[{{H}_{2}}\] with steam is [DCE 2002]
  A)
  Na done clear
  B)
  K done clear
  C)
  Pt done clear
  D)
  Fe done clear
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• question_answer41)
  pH of neutral water at room temperature nearly
  A)
  0 done clear
  B)
  14 done clear
  C)
  7 done clear
  D)
  \[{{10}^{-7}}\] done clear
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• question_answer42)
  Maximum number of hydrogen bonding in \[{{H}_{2}}O\] is [DCE 2004; MP PET 2004; MP PMT 2004; BHU 2004]
  A)
  1 done clear
  B)
  2 done clear
  C)
  3 done clear
  D)
  4 done clear
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• question_answer43)
  The low density of ice compared to water is due to [Pb. CET  2004]
  A)
  Induced dipole-induced dipole interactions done clear
  B)
  Dipole-induced dipole interaction done clear
  C)
  Hydrogen bonding interactions done clear
  D)
  Dipole-dipole interactions done clear
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• question_answer44)
  Which of the following acid is formed when \[Si{{F}_{4}}\] reacts with water [BHU 2004]
  A)
  \[Si{{F}_{4}}\] done clear
  B)
  \[{{H}_{2}}Si{{F}_{4}}\] done clear
  C)
  \[{{H}_{2}}S{{O}_{4}}\] done clear
  D)
  \[{{H}_{2}}Si{{F}_{6}}\] done clear
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• question_answer45)
  Triple point of water is [AFMC 2004]
  A)
  \[273K\] done clear
  B)
  \[373K\] done clear
  C)
  \[203K\] done clear
  D)
  \[193K\] done clear
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• question_answer46)
  Hardness of water is due to presence of salts of [BHU 2005]
  A)
  \[N{{a}^{+}}\] and \[{{K}^{+}}\] done clear
  B)
  \[C{{a}^{2+}}\]and \[M{{g}^{2+}}\] done clear
  C)
  \[C{{a}^{2+}}\]and \[{{K}^{+}}\] done clear
  D)
  \[C{{a}^{2+}}\] and  \[N{{a}^{+}}\] done clear
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