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MCQOPTIONS
This section includes 11242 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
| 5051. |
The high density of water compared to ice is due to [CBSE PMT 1997; BHU 1999; AFMC 2001] |
| A. | Hydrogen bonding interactions |
| B. | Dipole-dipole interactions |
| C. | Dipole-induced dipole interactions |
| D. | Induced dipole-induced dipole interactions |
| Answer» B. Dipole-dipole interactions | |
| 5052. |
Ethanol and dimethyl ether form a pair of functional isomers. The boiling point of ethanol is higher than that of dimethyl ether due to the presence of [AIIMS 1998] |
| A. | Hydrogen bonding in ethanol |
| B. | Hydrogen bonding in dimethyl ether |
| C. | group in ethanol |
| D. | group in dimethyl ether |
| Answer» B. Hydrogen bonding in dimethyl ether | |
| 5053. |
Compounds showing hydrogen bonding among and are |
| A. | Only and |
| B. | Only and |
| C. | Only and |
| D. | All the four |
| Answer» E. | |
| 5054. |
Which of the following compounds in liquid state does not have hydrogen bonding [MP PMT 1996] |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 5055. |
Hydrogen bonding is formed in compounds containing hydrogen and [MP PET 1995] |
| A. | Highly electronegative atoms |
| B. | Highly electropositive atoms |
| C. | Metal atoms with d-orbitals occupied |
| D. | Metalloids |
| Answer» B. Highly electropositive atoms | |
| 5056. |
In the following which has highest boiling point [MP PMT 1989; RPMT 1997] |
| A. | \[HI\] |
| B. | \[HF\] |
| C. | \[HBr\] |
| D. | \[HCl\] |
| Answer» C. \[HBr\] | |
| 5057. |
In which of the following compounds intramolecular hydrogen bond is present [MP PET 1994] |
| A. | Ethyl alcohol |
| B. | Water |
| C. | Salicylaldehyde |
| D. | Hydrogen sulphide |
| Answer» D. Hydrogen sulphide | |
| 5058. |
Strength of hydrogen bond is intermediate between [DPMT 1991] |
| A. | Vander Waal and covalent |
| B. | Ionic and covalent |
| C. | Ionic and metallic |
| D. | Metallic and covalent |
| Answer» B. Ionic and covalent | |
| 5059. |
B.P. of \[{{H}_{2}}O\,({{100}^{o}}C)\] and \[{{H}_{2}}S\,(-{{42}^{o}}C)\] explained by |
| A. | Vander Waal's forces |
| B. | Covalent bond |
| C. | Hydrogen bond |
| D. | Ionic bond |
| Answer» D. Ionic bond | |
| 5060. |
Methanol and ethanol are miscible in water due to [CPMT 1989] |
| A. | Covalent character |
| B. | Hydrogen bonding character |
| C. | Oxygen bonding character |
| D. | None of these |
| Answer» C. Oxygen bonding character | |
| 5061. |
The hydrogen bond is strongest in [BHU 1987; CBSE PMT 1990, 92] |
| A. | Water |
| B. | Ammonia |
| C. | Hydrogen fluoride |
| D. | Acetic acid |
| Answer» D. Acetic acid | |
| 5062. |
The high boiling point of ethanol \[({{78.2}^{o}}C)\] compared to dimethyl ether\[(-{{23.6}^{o}}C)\], though both having the same molecular formulae \[{{C}_{6}}{{H}_{6}}O\], is due to [MP PMT 1993] |
| A. | Hydrogen bonding |
| B. | Ionic bonding |
| C. | Coordinate covalent bonding |
| D. | Resonance |
| Answer» B. Ionic bonding | |
| 5063. |
Hydrogen bonding is maximum in [IIT 1987; MP PMT 1991; MP PET 1993, 2001; MNR 1995; CPMT 1999; KCET (Med.) 2002] |
| A. | Ethanol |
| B. | Diethyl ether |
| C. | Ethyl chloride |
| D. | Triethyl amine |
| Answer» B. Diethyl ether | |
| 5064. |
The maximum possible number of hydrogen bonds in which an \[{{H}_{2}}O\]molecule can participate is [MP PMT 1986; MNR 1991; IIT 1992;MP PET 1999] |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 5065. |
Water is liquid due to [MADT Bihar 1983] |
| A. | Hydrogen bonding |
| B. | Covalent bond |
| C. | Ionic bond |
| D. | Vander Waals forces |
| Answer» B. Covalent bond | |
| 5066. |
\[HCl\] is a gas but \[HF\]is a low boiling liquid. This is because [NCERT 1984; MP PMT 2001] |
| A. | \[H-F\]bond is strong |
| B. | \[H-F\]bond is weak |
| C. | Molecules aggregate because of hydrogen bonding |
| D. | \[HF\]is a weak acid |
| Answer» D. \[HF\]is a weak acid | |
| 5067. |
The relatively high boiling point of \[HF\]is due to [NCERT 1984] |
| A. | Hydrogen bonding |
| B. | Covalent bonding |
| C. | Unshared electron pair on \[F\] |
| D. | Being a halogen acid |
| Answer» B. Covalent bonding | |
| 5068. |
In which of the following hydrogen bond is present |
| A. | \[{{H}_{2}}\] |
| B. | Ice |
| C. | Sulphur |
| D. | Hydrocarbon |
| Answer» C. Sulphur | |
| 5069. |
The bond that determines the secondary structure of a protein is [NCERT 1984; MP PET 1996] |
| A. | Coordinate bond |
| B. | Covalent bond |
| C. | Hydrogen bond |
| D. | Ionic bond |
| Answer» D. Ionic bond | |
| 5070. |
Which one among the following does not have the hydrogen bond [IIT 1983; MP PMT 1994; UPSEAT 2001] |
| A. | Phenol |
| B. | Liquid \[N{{H}_{3}}\] |
| C. | Water |
| D. | Liquid \[HCl\] |
| Answer» E. | |
| 5071. |
Acetic acid exists as dimer in benzene due to [CPMT 1982] |
| A. | Condensation reaction |
| B. | Hydrogen bonding |
| C. | Presence of carboxyl group |
| D. | Presence of hydrogen atom at \[\alpha -\]carbon |
| Answer» C. Presence of carboxyl group | |
| 5072. |
Which among the following compounds does not show hydrogen bonding [MP PMT 1989] |
| A. | Chloroform |
| B. | Ethyl alcohol |
| C. | Acetic acid |
| D. | Ethyl ether |
| Answer» E. | |
| 5073. |
In which of the following compounds does hydrogen bonding occur [CBSE PMT 1989] |
| A. | \[Si{{H}_{4}}\] |
| B. | \[LiH\] |
| C. | \[HI\] |
| D. | \[N{{H}_{3}}\] |
| Answer» E. | |
| 5074. |
Water has high heat of vaporisation due to [AFMC 1982] |
| A. | Covalent bonding |
| B. | \[H-\]bonding |
| C. | Ionic bonding |
| D. | None of the above |
| Answer» C. Ionic bonding | |
| 5075. |
The pairs of bases in \[DNA\] are held together by [NCERT 1978; DPMT 1985; CBSE PMT 1992] |
| A. | Hydrogen bonds |
| B. | Ionic bonds |
| C. | Phosphate groups |
| D. | Deoxyribose groups |
| Answer» B. Ionic bonds | |
| 5076. |
Of the following hydrides which has the lowest boiling point [CBSE PMT 1987] |
| A. | \[N{{H}_{3}}\] |
| B. | \[P{{H}_{3}}\] |
| C. | \[Sb{{H}_{3}}\] |
| D. | \[As{{H}_{3}}\] |
| Answer» C. \[Sb{{H}_{3}}\] | |
| 5077. |
Which of the following compound can form hydrogen bonds [NCERT 1978; MP PMT 1997] |
| A. | \[C{{H}_{4}}\] |
| B. | \[NaCl\] |
| C. | \[CHC{{l}_{3}}\] |
| D. | \[{{H}_{2}}O\] |
| Answer» E. | |
| 5078. |
Which contains strongest \[H-\]bond [IIT 1986; MP PET 1997, 2003; UPSEAT 2001, 03] |
| A. | \[O-H.....S\] |
| B. | \[S-H.....O\] |
| C. | \[F-H.....F\] |
| D. | \[S-H.....O\] |
| Answer» D. \[S-H.....O\] | |
| 5079. |
Shape of \[B{{F}_{3}}\] molecule is [CPMT 2000; Pb. CET 2002] |
| A. | Linear |
| B. | Planar |
| C. | Tetrahedral |
| D. | Square pyramidal |
| Answer» C. Tetrahedral | |
| 5080. |
Which of the following has tetrahedral structure [CPMT 2000] |
| A. | \[CO_{3}^{-}\] |
| B. | \[NH_{4}^{+}\] |
| C. | \[{{K}_{4}}[Fe{{(CN)}_{6}}]\] |
| D. | None of these |
| Answer» C. \[{{K}_{4}}[Fe{{(CN)}_{6}}]\] | |
| 5081. |
The geometry of the molecule with \[s{{p}^{3}}{{d}^{2}}\] hybridised central atom is [NCERT 1981; AFMC 1982; RPMT 2000] |
| A. | Square planar |
| B. | Trigonal bipyramidal |
| C. | Octahedral |
| D. | Square pyramidal |
| Answer» D. Square pyramidal | |
| 5082. |
The bond angle in \[P{{H}_{3}}\] is [RPMT 2000] |
| A. | Much less than \[N{{H}_{3}}\] |
| B. | Equal to that of \[N{{H}_{3}}\] |
| C. | Much greater than \[N{{H}_{3}}\] |
| D. | Slightly greater than \[N{{H}_{3}}\] |
| Answer» B. Equal to that of \[N{{H}_{3}}\] | |
| 5083. |
Which of the following molecule is linear [MP PMT 2000] |
| A. | \[S{{O}_{2}}\] |
| B. | \[NO_{2}^{+}\] |
| C. | \[NO_{2}^{-}\] |
| D. | \[SC{{l}_{2}}\] |
| Answer» C. \[NO_{2}^{-}\] | |
| 5084. |
What is the correct mode of hybridization of the central atom in the following compounds : \[NO_{2}^{+},S{{F}_{4,}}P{{F}_{6}}^{-}\] [AMU 1999] |
| A. | \[s{{p}^{2}},\,\,s{{p}^{3}},\,\,{{d}^{2}}s{{p}^{3}}\] |
| B. | \[s{{p}^{3}},\,\,s{{p}^{3}}{{d}^{2}},\,\,s{{p}^{3}}{{d}^{2}}\] |
| C. | \[sp,\,\,s{{p}^{3}}d,\,\,s{{p}^{3}}{{d}^{2}}\] |
| D. | \[sp,\,\,s{{p}^{2}},\,\,s{{p}^{3}}\] |
| Answer» D. \[sp,\,\,s{{p}^{2}},\,\,s{{p}^{3}}\] | |
| 5085. |
Pyramidal shape would be of [RPET 1999] |
| A. | \[NO_{3}^{-}\] |
| B. | \[{{H}_{2}}O\] |
| C. | \[{{H}_{3}}{{O}^{+}}\] |
| D. | \[NH_{4}^{+}\] |
| Answer» D. \[NH_{4}^{+}\] | |
| 5086. |
Which of the following molecule does not show tetrahedral shape [RPET 1999] |
| A. | \[CC{{l}_{4}}\] |
| B. | \[SiC{{l}_{4}}\] |
| C. | \[S{{F}_{4}}\] |
| D. | \[C{{F}_{4}}\] |
| Answer» D. \[C{{F}_{4}}\] | |
| 5087. |
Compound formed by \[s{{p}^{3}}d\]hybridization will have structure [BHU 1982; RPMT 1999] |
| A. | Planar |
| B. | Pyramidal |
| C. | Angular |
| D. | Trigonal bipyramidal |
| Answer» E. | |
| 5088. |
Which compound does not possess linear geometry [RPET 1999] |
| A. | \[C{{H}_{2}}=C{{H}_{2}}\] |
| B. | \[HC\equiv CH\] |
| C. | \[BeC{{l}_{2}}\] |
| D. | \[C{{O}_{2}}\] |
| Answer» B. \[HC\equiv CH\] | |
| 5089. |
The type of hybridisation of boron in diborane is [BHU 1999] |
| A. | sp - hybridisation |
| B. | \[s{{p}^{2}}\]- hybridisation |
| C. | \[s{{p}^{3}}\]- hybridisation |
| D. | \[s{{p}^{3}}{{d}^{2}}\] - hybridization |
| Answer» D. \[s{{p}^{3}}{{d}^{2}}\] - hybridization | |
| 5090. |
The structure and hybridisation of \[Si{{(C{{H}_{3}})}_{4}}\] is [CBSE PMT 1996] |
| A. | Bent, \[sp\] |
| B. | Trigonal, \[s{{p}^{2}}\] |
| C. | Octahedral, \[s{{p}^{3}}d\] |
| D. | Tetrahedral, \[s{{p}^{3}}\] |
| Answer» E. | |
| 5091. |
When the hybridisation state of carbon atom changes from \[s{{p}^{3}}\]to \[s{{p}^{2}}\]to \[sp,\] the angle between the hybridised orbitals [AIIMS 1998] |
| A. | Decreases gradually |
| B. | Increases gradually |
| C. | Decreases considerably |
| D. | All of these |
| Answer» C. Decreases considerably | |
| 5092. |
The ammonium ion is [CET Pune 1998] |
| A. | Tetrahedral |
| B. | Trigonal pyramidal |
| C. | Square planar |
| D. | Square pyramidal |
| Answer» B. Trigonal pyramidal | |
| 5093. |
In graphite, electrons are [CBSE PMT 1997] |
| A. | Localised on every third \[C\] atom |
| B. | Present in antibonding orbital |
| C. | Localised on each \[C\] atom |
| D. | Spread out between the structure |
| Answer» E. | |
| 5094. |
The geometry and the type of hybrid orbital present about the central atom in \[B{{F}_{3}}\]is [IIT 1998; BHU 2001] |
| A. | Linear, \[sp\] |
| B. | Trigonal planar, \[s{{p}^{2}}\] |
| C. | Tetrahedral, \[s{{p}^{3}}\] |
| D. | Pyramidal, \[s{{p}^{3}}\] |
| Answer» C. Tetrahedral, \[s{{p}^{3}}\] | |
| 5095. |
The correct order towards bond angle is [RPMT 1997] |
| A. | \[sp<s{{p}^{2}}<s{{p}^{3}}\] |
| B. | \[s{{p}^{2}}<sp<s{{p}^{3}}\] |
| C. | \[s{{p}^{3}}<s{{p}^{2}}<sp\] |
| D. | Bond angle does not depend on hybridization |
| Answer» D. Bond angle does not depend on hybridization | |
| 5096. |
The bond angle in ethylene is [CPMT 1987] |
| A. | \[{{180}^{o}}\] |
| B. | \[{{120}^{o}}\] |
| C. | \[{{109}^{o}}\] |
| D. | \[{{90}^{o}}\] |
| Answer» C. \[{{109}^{o}}\] | |
| 5097. |
Which one of the following statements is true for ammonium ion [EAMCET 1997] |
| A. | All bonds are ionic |
| B. | All bonds are coordinate covalent |
| C. | \[H\]atoms are situated at the corners of a square |
| D. | \[H\]atoms are situated at the corners of a tetrahedron |
| Answer» E. | |
| 5098. |
Which of the following compounds is not linear [CPMT 1996] |
| A. | \[SnC{{l}_{2}}\] |
| B. | \[HCl\] |
| C. | \[C{{O}_{2}}\] |
| D. | \[HgC{{l}_{2}}\] |
| Answer» B. \[HCl\] | |
| 5099. |
\[CC{{l}_{4}}\] has the hybridisation [DPMT 1996] |
| A. | \[s{{p}^{3}}d\] |
| B. | \[ds{{p}^{2}}\] |
| C. | \[sp\] |
| D. | \[s{{p}^{3}}\] |
| Answer» E. | |
| 5100. |
Which of the following is isoelectronic as well as has same structure as that of \[{{N}_{2}}O\] [CPMT 1999] |
| A. | \[{{N}_{3}}H\] |
| B. | \[{{H}_{2}}O\] |
| C. | \[N{{O}_{2}}\] |
| D. | \[C{{O}_{2}}\] |
| Answer» E. | |