JEE Main & Advanced Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना Question Bank

done Electrovalent bonding Total Questions - 68

• question_answer1)
  Which forms a crystal of \[NaCl\] [CPMT 1972; NCERT 1976; DPMT 1996]
  A)
                  \[NaCl\]molecules           done clear
  B)
                  \[N{{a}^{+}}\] and \[C{{l}^{-}}\]ions done clear
  C)
                  \[Na\] and \[Cl\] atoms                 done clear
  D)
                  None of the above done clear
  View Solution play_arrow

• question_answer2)
  When sodium and chlorine reacts then [NCERT 1973]
  A)
                  Energy is released and ionic bond is formed        done clear
  B)
                  Energy is released and a covalent bond is formed done clear
  C)
                  Energy is absorbed and ionic bond is formed done clear
  D)
                  Energy is absorbed and covalent bond is formed done clear
  View Solution play_arrow

• question_answer3)
  Which one is least ionic in the following compounds                                                                                 [CPMT 1976; BHU 1998]
  A)
                  \[AgCl\]                done clear
  B)
                  \[KCl\] done clear
  C)
                  \[BaC{{l}_{2}}\] done clear
  D)
                  \[CaC{{l}_{2}}\] done clear
  View Solution play_arrow

• question_answer4)
   The electronic configuration of four elements L, P, Q and R are given in brackets \[L\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{4}} \right);\,\,Q\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}},\,\,3{{s}^{2}}\,\,3{{p}^{5}} \right)\] \[P\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}},\,\,3{{s}^{1}} \right);\,\,R\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}},\,\,3{{s}^{2}} \right)\] The formulae of ionic compounds that can be formed between these elements are        [NCERT 1983]
  A)
                  \[{{L}_{2}}P,\,\,RL,\,\,PQ\] and \[{{R}_{2}}Q\]    done clear
  B)
                  \[LP,\,\,RL,\,\,PQ\] and \[RQ\] done clear
  C)
                  \[{{P}_{2}}L,\,\,RL,\,\,PQ\] and \[R{{Q}_{2}}\]    done clear
  D)
                  \[LP,\,\,{{R}_{2}}L,\,\,{{P}_{2}}Q\] and \[RQ\] done clear
  View Solution play_arrow

• question_answer5)
  Electrovalent compound's           [MP PMT 1984]
  A)
                  Melting points are low   done clear
  B)
                  Boiling points are low done clear
  C)
                  Conduct current in fused state done clear
  D)
                  Insoluble in polar solvent done clear
  View Solution play_arrow

• question_answer6)
  A electrovalent compound is made up of [CPMT 1978, 81; MNR 1979]
  A)
                  Electrically charged molecules done clear
  B)
                  Neutral molecules done clear
  C)
                  Neutral atoms done clear
  D)
                  Electrically charged atoms or group of atoms done clear
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• question_answer7)
  Electrovalent bond formation depends on
  A)
                  Ionization energy             done clear
  B)
                  Electron affinity done clear
  C)
                  Lattice energy done clear
  D)
                  All the three above done clear
  View Solution play_arrow

• question_answer8)
  In the following which substance will have highest boiling point                  [NCERT 1973; MP PMT 1990]
  A)
                  \[He\]   done clear
  B)
                  \[CsF\] done clear
  C)
                  \[N{{H}_{3}}\]   done clear
  D)
                  \[CHC{{l}_{3}}\] done clear
  View Solution play_arrow

• question_answer9)
  An atom of sodium loses one electron and chlorine atom accepts one electron. This result the formation of sodium chloride molecule. This type of molecule will be [MP PMT 1987]
  A)
                  Coordinate         done clear
  B)
                  Covalent done clear
  C)
                  Electrovalent     done clear
  D)
                  Matallic bond done clear
  View Solution play_arrow

• question_answer10)
  Formula of a metallic oxide is \[MO.\] The  formula of its phosphate will be                                              [CPMT 1986, 93]
  A)
                  \[{{M}_{2}}{{\left( P{{O}_{4}} \right)}_{2}}\]        done clear
  B)
                  \[M\left( P{{O}_{4}} \right)\] done clear
  C)
                  \[{{M}_{2}}P{{O}_{4}}\]                done clear
  D)
                  \[{{M}_{3}}{{\left( P{{O}_{4}} \right)}_{2}}\] done clear
  View Solution play_arrow

• question_answer11)
  From the following which group of elements easily forms cation
  A)
                  \[F,\,\,Cl,\,\,Br\]              done clear
  B)
                  \[Li,\,\,Na,\,\,K\] done clear
  C)
                  \[O,\,\,S,\,\,Se\]              done clear
  D)
                  \[N,\,\,P,\,\,As\] done clear
  View Solution play_arrow

• question_answer12)
  Which type of compounds show high melting and boiling points                                                [CPMT 1996]
  A)
                  Electrovalent compounds done clear
  B)
                  Covalent compounds done clear
  C)
                  Coordinate compounds done clear
  D)
                  All the three types of compounds have equal melting and boiling points done clear
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• question_answer13)
  Lattice energy of an ionic compound depends upon [AIEEE 2005]
  A)
                  Charge on the ion only done clear
  B)
                  Size of the ion only done clear
  C)
                  Packing of ions only done clear
  D)
                  Charge on the ion and size of the ion done clear
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• question_answer14)
  In the given bonds which one is most ionic                                                                           [EAMCET 1980]
  A)
                  \[Cs-Cl\]              done clear
  B)
                  \[Al-Cl\] done clear
  C)
                  \[C-Cl\] done clear
  D)
                  \[H-Cl\] done clear
  View Solution play_arrow

• question_answer15)
  Element \[x\]is strongly electropositive and \[y\] is strongly electronegative. Both element are univalent, the compounds formed from their combination will be   [IIT 1980]
  A)
                  \[{{x}^{+}}{{y}^{-}}\]      done clear
  B)
                  \[{{x}^{-}}\,{{y}^{+}}\] done clear
  C)
                  \[x-y\]  done clear
  D)
                  \[x\to y\] done clear
  View Solution play_arrow

• question_answer16)
  In the formation of \[NaCl\] from \[Na\] and \[\gamma -\]          [CPMT 1985]
  A)
                  Sodium and chlorine both give electrons done clear
  B)
                  Sodium and chlorine both accept electrons done clear
  C)
                  Sodium loses electron and chlorine accepts electron done clear
  D)
                  Sodium accepts electron and chlorine loses electron done clear
  View Solution play_arrow

• question_answer17)
  Which of the following is an electrovalent linkage [CPMT 1974; DPMT 1984, 91; AFMC 1988]
  A)
                  \[C{{H}_{4}}\]    done clear
  B)
                  \[NC{{l}_{5}}\] done clear
  C)
                  \[SiC{{l}_{4}}\]   done clear
  D)
                  \[B{{F}_{3}}\] done clear
  View Solution play_arrow

• question_answer18)
  Electrovalent compounds do not have   [CPMT 1991]
  A)
                  High M.P. and Low B.P. done clear
  B)
                  High dielectric constant done clear
  C)
                  High M.P. and High B.P. done clear
  D)
                  High polarity done clear
  View Solution play_arrow

• question_answer19)
  Many ionic crystals dissolve in water because                                                                 [NCERT 1982]
  A)
                  Water is an amphiprotic solvent done clear
  B)
                  Water is a high boiling liquid done clear
  C)
                  The process is accompanied by a positive heat of solution done clear
  D)
                  Water decreases the interionic attraction in the crystal lattice due to solvation done clear
  View Solution play_arrow

• question_answer20)
  The electronic structure of four elements A, B, C, D are (i)            \[1{{s}^{2}}\]     (ii)           \[1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{2}}\]   (iii)          \[1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{5}}\]   (iv)         \[1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}}\] The tendency to form electrovalent bond is largest in [MNR 1987, 95]
  A)
                  A             done clear
  B)
                  B done clear
  C)
                  C             done clear
  D)
                  D done clear
  View Solution play_arrow

• question_answer21)
  Chloride of metal is \[MC{{l}_{2}}\]. The formula of its phosphate will be                                               [CPMT 1979]
  A)
                  \[{{M}_{2}}P{{O}_{4}}\]                done clear
  B)
                  \[{{M}_{3}}{{\left( P{{O}_{4}} \right)}_{2}}\] done clear
  C)
                  \[{{M}_{2}}{{\left( P{{O}_{4}} \right)}_{3}}\]        done clear
  D)
                  \[MP{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer22)
  The phosphate of a metal has the formula\[MP{{O}_{4}}\]. The formula of its nitrate will be                        [CPMT 1971; MP PMT 1996]
  A)
                  \[MN{{O}_{3}}\]               done clear
  B)
                  \[{{M}_{2}}{{\left( N{{O}_{3}} \right)}_{2}}\] done clear
  C)
                  \[M{{\left( N{{O}_{3}} \right)}_{2}}\]      done clear
  D)
                  \[M{{\left( N{{O}_{3}} \right)}_{3}}\] done clear
  View Solution play_arrow

• question_answer23)
  In the transition of \[Zn\] atoms to \[Z{{n}^{++}}\]ions there is a decrease in the                                              [CPMT 1972]
  A)
                  Number of valency electrons done clear
  B)
                  Atomic weight done clear
  C)
                  Atomic number done clear
  D)
                  Equivalent weight done clear
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• question_answer24)
  Phosphate of a metal M has the formula \[{{M}_{3}}{{\left( P{{O}_{4}} \right)}_{2}}.\] The formula for its sulphate would be [CPMT 1973; MP PMT 1996]
  A)
                  \[MS{{O}_{4}}\]                done clear
  B)
                  \[M{{\left( S{{O}_{4}} \right)}_{2}}\] done clear
  C)
                  \[{{M}_{2}}{{\left( S{{O}_{4}} \right)}_{3}}\]        done clear
  D)
                  \[{{M}_{3}}{{\left( S{{O}_{4}} \right)}_{2}}\] done clear
  View Solution play_arrow

• question_answer25)
  The molecular formula of chloride of a metal M is \[MC{{l}_{3}}.\] The formula of its carbonate would be              [CPMT 1987]
  A)
                  \[MC{{O}_{3}}\]               done clear
  B)
                  \[{{M}_{2}}{{\left( C{{O}_{3}} \right)}_{3}}\] done clear
  C)
                  \[{{M}_{2}}C{{O}_{3}}\]                done clear
  D)
                  \[M{{\left( C{{O}_{3}} \right)}_{2}}\] done clear
  View Solution play_arrow

• question_answer26)
  Sodium chloride easily dissolves in water. This is because              [NCERT 1972; BHU 1973]
  A)
                  It is a covalent compound done clear
  B)
                  Salt reacts with water done clear
  C)
                  It is a white substance done clear
  D)
                  Its ions are easily solvated done clear
  View Solution play_arrow

• question_answer27)
  When \[NaCl\] is dissolved in water the sodium ion becomes     [NCERT 1974; CPMT 1989; MP PMT 1999]
  A)
                  Oxidized              done clear
  B)
                  Reduced done clear
  C)
                  Hydrolysed         done clear
  D)
                  Hydrated done clear
  View Solution play_arrow

• question_answer28)
  Solid \[NaCl\]is a bad conductor of electricity since [AFMC 1980]
  A)
                  In solid \[NaCl\] there are no ions done clear
  B)
                  Solid \[NaCl\] is covalent done clear
  C)
                  In solid \[NaCl\] there is no motion of ions done clear
  D)
                  In solid \[NaCl\] there are no electrons done clear
  View Solution play_arrow

• question_answer29)
  Favourable conditions for electrovalency are
  A)
                  Low charge on ions, large cation, small anion done clear
  B)
                  High charge on ions, small cation, large anion done clear
  C)
                  High charge on ions, large cation, small anion done clear
  D)
                  Low charge on ions, small cation, large anion done clear
  View Solution play_arrow

• question_answer30)
  The sulphate of a metal has the formula \[{{M}_{2}}{{\left( S{{O}_{4}} \right)}_{3}}.\] The formula for its phosphate will be  [DPMT 1982; CPMT 1972; MP PMT 1995]
  A)
                  \[M{{\left( HP{{O}_{4}} \right)}_{2}}\]    done clear
  B)
                  \[{{M}_{3}}{{\left( P{{O}_{4}} \right)}_{2}}\] done clear
  C)
                  \[{{M}_{2}}{{\left( P{{O}_{4}} \right)}_{3}}\]        done clear
  D)
                  \[MP{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer31)
  Ionic bonds are usually formed by combination of elements with              [CBSE PMT 1993; MP PMT 1994]
  A)
                  High ionisation potential and low electron affinity done clear
  B)
                  Low ionisation potential and high electron affinity done clear
  C)
                  High ionisation potential and high electron affinity done clear
  D)
                  Low ionisation potential and low electron affinity done clear
  View Solution play_arrow

• question_answer32)
  Molten sodium chloride conducts electricity due to the presence of                                        [IIT 1981]
  A)
                  Free electrons   done clear
  B)
                  Free ions done clear
  C)
                  Free molecules done clear
  D)
                  Atoms of sodium and chlorine done clear
  View Solution play_arrow

• question_answer33)
  The phosphate of a metal has the formula \[MHP{{O}_{4}}.\] The formula of its chloride would be [NCERT 1974; CPMT 1977]
  A)
                  \[MCl\] done clear
  B)
                  \[MC{{l}_{2}}\] done clear
  C)
                  \[MC{{l}_{3}}\]  done clear
  D)
                  \[{{M}_{2}}C{{l}_{3}}\] done clear
  View Solution play_arrow

• question_answer34)
  A number of ionic compounds e.g. \[AgCl,\,\,Ca{{F}_{2}},\]\[BaS{{O}_{4}}\] are insoluble in water. This is because          [NCERT 1984]
  A)
                  Ionic compounds do not dissolve in water done clear
  B)
                  Water has a high dielectric constant done clear
  C)
                  Water is not a good ionizing solvent done clear
  D)
                  These molecules have exceptionally high alternative forces in the lattice done clear
  View Solution play_arrow

• question_answer35)
  What is the nature of chemical bonding between \[Cs\] and \[F\] [MP PMT 1987; CPMT 1976]
  A)
                  Covalent              done clear
  B)
                  Ionic done clear
  C)
                  Coordinate         done clear
  D)
                  Metallic done clear
  View Solution play_arrow

• question_answer36)
  Which one of the following compound is ionic                                                                    [MNR 1985]
  A)
                  \[KCl\]  done clear
  B)
                  \[C{{H}_{4}}\] done clear
  C)
                  Diamond              done clear
  D)
                  \[{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer37)
  Which of the following compound has electrovalent linkage                                                                 [CPMT 1983, 84, 93]
  A)
                  \[C{{H}_{3}}Cl\]                done clear
  B)
                  \[NaCl\] done clear
  C)
                  \[C{{H}_{4}}\]    done clear
  D)
                  \[C{{l}_{2}}\] done clear
  View Solution play_arrow

• question_answer38)
  An ionic compound is generally a              [MADT Bihar 1981]
  A)
                  Good electrolyte              done clear
  B)
                  Weak electrolyte done clear
  C)
                  Non-electrolyte                done clear
  D)
                  Neutral done clear
  View Solution play_arrow

• question_answer39)
  What metals combine with non-metals, the metal atom tends to                                              [AMU 1982]
  A)
                  Lose electrons   done clear
  B)
                  Gain electrons done clear
  C)
                  Remain electrically neutral done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer40)
  Chemical formula for calcium pyrophosphate is \[{{120}^{o}}\] The formula for ferric pyrophosphate will be        [NCERT 1977]
  A)
                  \[F{{e}_{3}}{{({{P}_{2}}{{O}_{7}})}_{3}}\]              done clear
  B)
                  \[F{{e}_{4}}{{P}_{4}}{{O}_{14}}\] done clear
  C)
                  \[F{{e}_{4}}{{({{P}_{2}}{{O}_{7}})}_{3}}\]              done clear
  D)
                  \[F{{e}_{3}}P{{O}_{4}}\] done clear
  View Solution play_arrow

• question_answer41)
  Among the bonds formed by a chlorine atom with atoms of hydrogen, chlorine, sodium and carbon, the strongest bond is formed between             [EAMCET 1988; MP PMT 1993]
  A)
                  \[H-Cl\]                done clear
  B)
                  \[Cl-Cl\] done clear
  C)
                  \[Na-Cl\]              done clear
  D)
                  \[C-Cl\] done clear
  View Solution play_arrow

• question_answer42)
  Which of the following is least soluble    [CPMT 1989]
  A)
                  \[Be{{F}_{2}}\]  done clear
  B)
                  \[Sr{{F}_{2}}\] done clear
  C)
                  \[Ca{{F}_{2}}\]  done clear
  D)
                  \[Mg{{F}_{2}}\] done clear
  View Solution play_arrow

• question_answer43)
  Which of the following halides has maximum melting point
  A)
                  \[NaCl\]               done clear
  B)
                  \[NaBr\] done clear
  C)
                  \[NaI\]  done clear
  D)
                  \[NaF\] done clear
  View Solution play_arrow

• question_answer44)
  The high melting point and insolubility in organic solvents of sulphanilic acid are due to its ...... structure.               [IIT 1994]
  A)
                  Simple ionic        done clear
  B)
                  Bipolar ionic done clear
  C)
                  Cubic     done clear
  D)
                  Hexagonal done clear
  View Solution play_arrow

• question_answer45)
  Out of the following, which compound will have electrovalent bonding
  A)
                  Ammonia            done clear
  B)
                  Water done clear
  C)
                  Calcium chloride               done clear
  D)
                  Chloromethane done clear
  View Solution play_arrow

• question_answer46)
  The force which holds atoms together in an electrovalent bond is
  A)
                  Vander Waal's force       done clear
  B)
                  Dipole attraction force done clear
  C)
                  Electrostatic force of attraction done clear
  D)
                  All the above done clear
  View Solution play_arrow

• question_answer47)
  The main reaction during electrovalent bond formation is
  A)
                  Redox reaction done clear
  B)
                  Substitution reaction done clear
  C)
                  Addition reaction             done clear
  D)
                  Elimination reaction done clear
  View Solution play_arrow

• question_answer48)
  Electrovalent compounds are     [CPMT 1996]
  A)
                  Good conductor of electricity done clear
  B)
                  Polar in nature done clear
  C)
                  Low M.P. and low B.P. done clear
  D)
                  Easily available done clear
  View Solution play_arrow

• question_answer49)
  Ionic compounds do not have    [RPMT 1997]
  A)
                  Hard and brittle nature  done clear
  B)
                  High melting and boiling point done clear
  C)
                  Directional properties done clear
  D)
                  Soluble in polar solvents done clear
  View Solution play_arrow

• question_answer50)
  Highest melting point would be of                           [RPMT 1999]
  A)
                  \[He\]   done clear
  B)
                  \[CsCl\] done clear
  C)
                  \[N{{H}_{3}}\]   done clear
  D)
                  \[CHC{{l}_{3}}\] done clear
  View Solution play_arrow

• question_answer51)
  What is the effect of more electronegative atom on the strength of ionic bond                                  [AMU 1999]
  A)
                  Decreases           done clear
  B)
                  Increases done clear
  C)
                  Decreases slowly             done clear
  D)
                  Remains the same done clear
  View Solution play_arrow

• question_answer52)
   An element X with the electronic configuration \[1{{s}^{2}},\,2{{s}^{2}}2{{p}^{6}},\,3{{s}^{2}}\] would be expected to form the chloride with the formula                                     [JIPMER 2000]
  A)
                  \[XC{{l}_{3}}\]   done clear
  B)
                  \[XC{{l}_{2}}\] done clear
  C)
                  \[XCl\]  done clear
  D)
                  \[{{X}_{2}}Cl\] done clear
  View Solution play_arrow

• question_answer53)
  Two element have electronegativity of 1.2 and 3.0. Bond formed between them would be          [CPMT 1982; DCE 2000]
  A)
                  Ionic      done clear
  B)
                  Polar covalent done clear
  C)
                  Co-ordinate        done clear
  D)
                  Metallic done clear
  View Solution play_arrow

• question_answer54)
  Which of the following is least ionic         [MP PET 2002]
  A)
                  \[{{C}_{2}}{{H}_{5}}Cl\] done clear
  B)
                  \[KCl\] done clear
  C)
                  \[BaC{{l}_{2}}\] done clear
  D)
                  \[{{C}_{6}}{{H}_{5}}{{N}^{+}}{{H}_{3}}C{{l}^{-}}\] done clear
  View Solution play_arrow

• question_answer55)
  Which type of bonding exists in \[L{{i}_{2}}O\] and \[Ca{{F}_{2}}\] respectively                  [RPET 2000]
  A)
                  Ionic, ionic           done clear
  B)
                  Ionic, covalent done clear
  C)
                  Covalent, ionic  done clear
  D)
                  Coordinate, ionic done clear
  View Solution play_arrow

• question_answer56)
  An atom with atomic number 20 is most likely to combine chemically with the atom whose atomic number is [BHU 2000]
  A)
                  11           done clear
  B)
                  14 done clear
  C)
                  16           done clear
  D)
                  10 done clear
  View Solution play_arrow

• question_answer57)
  Bond formed in crystal by anion and cation is                                                                 [CBSE PMT 2000]
  A)
                  Ionic      done clear
  B)
                  Metallic done clear
  C)
                  Covalent              done clear
  D)
                  Dipole done clear
  View Solution play_arrow

• question_answer58)
  Atoms or group of atoms which are electrically charged are known                                          [UPSEAT 2001]
  A)
                  Anions  done clear
  B)
                  Cations done clear
  C)
                  Ions       done clear
  D)
                  Atoms done clear
  View Solution play_arrow

• question_answer59)
  Which one is the strongest bond              [Pb. PMT 2001]
  A)
                  \[BrF\]  done clear
  B)
                  \[FF\] done clear
  C)
                  \[ClF\]   done clear
  D)
                  \[BrCl\] done clear
  View Solution play_arrow

• question_answer60)
  The interionic attraction depends on interaction of [Kerala CET (Med.) 2002]
  A)
                  Solute-Solute    done clear
  B)
                  Solvent-Solvent done clear
  C)
                  The charges        done clear
  D)
                  Molecular properties done clear
  View Solution play_arrow

• question_answer61)
  Which of the following compounds is ionic [UPSEAT 2002]
  A)
                  \[KI\]     done clear
  B)
                  \[C{{H}_{4}}\] done clear
  C)
                  Diamond              done clear
  D)
                  \[{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer62)
  Which of the following pairs of species has same electronic configuration                                             [UPSEAT 2002]
  A)
                  \[Z{{n}^{2+}}\] and \[N{{i}^{2+}}\]           done clear
  B)
                  \[C{{o}^{+3}}\] and \[N{{i}^{4+}}\] done clear
  C)
                  \[C{{o}^{2+}}\] and \[N{{i}^{2+}}\]           done clear
  D)
                  \[T{{i}^{4+}}\] and \[{{V}^{3+}}\] done clear
  View Solution play_arrow

• question_answer63)
  The energy that opposes dissolution of a solvent is [CPMT 2002]
  A)
                  Hydration energy             done clear
  B)
                  Lattice energy done clear
  C)
                  Internal energy                 done clear
  D)
                  Bond energy done clear
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• question_answer64)
  Which of the following has highest melting point [RPET 2003]
  A)
                  \[BeC{{l}_{2}}\] done clear
  B)
                  \[MgC{{l}_{2}}\] done clear
  C)
                  \[CaC{{l}_{2}}\] done clear
  D)
                  \[BaC{{l}_{2}}\] done clear
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• question_answer65)
  Which of the following statements is not true for ionic compounds          [RPET 2003]
  A)
                  High melting point           done clear
  B)
                  Least lattice energy done clear
  C)
                  Least solubility in organic compounds done clear
  D)
                  Soluble in water done clear
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• question_answer66)
  Electrolytes are compound containing    [MADT Bihar 1981]
  A)
                  Electrovalent bond          done clear
  B)
                  Covalent bond done clear
  C)
                  Coordinate bond              done clear
  D)
                  Hydrogen bond done clear
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• question_answer67)
  Which of the following hydrides are ionic              [Roorkee 1999]
  A)
                  \[Ca{{H}_{2}}\]  done clear
  B)
                  \[Ba{{H}_{2}}\] done clear
  C)
                  \[Sr{{H}_{2}}\]  done clear
  D)
                  \[Be{{H}_{2}}\] done clear
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• question_answer68)
  Which of the following conduct electricity in the fused state [Roorkee 2000]
  A)
                  \[BeC{{l}_{2}}\] done clear
  B)
                  \[MgC{{l}_{2}}\] done clear
  C)
                  \[SrC{{l}_{2}}\]  done clear
  D)
                  \[BaC{{l}_{2}}\] done clear
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