Explore topic-wise MCQs in Joint Entrance Exam - Main (JEE Main).

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.

5151.

For which of the following hybridisation the bond angle is maximum                                       [CBSE PMT 1991]

A.                 \[s{{p}^{2}}\]    
B.                 \[sp\]
C.                 \[s{{p}^{3}}\]    
D.                 \[ds{{p}^{2}}\]
Answer» C.                 \[s{{p}^{3}}\]    
Discussion
5152.

The bond angle in water molecule is nearly or Directed bonds in water forms an angle of [NCERT 1980; EAMCET 1981; MNR 1983, 85;   AIIMS 1982; CPMT 1989; MP PET 1994, 96; MP PET/PMT 1998]

A.                 \[{{120}^{o}}\] 
B.                 \[{{180}^{o}}\]
C.                 \[{{109}^{o}}28'\]            
D.                 \[{{104}^{o}}30'\]
Answer» E.
Discussion
5153.

Shape of \[Xe{{F}_{4}}\]molecule is [BHU 1987; AFMC 1992; CET Pune 1998; Roorkee Qualifying 1998; DCE 2002]

A.                 Linear   
B.                 Pyramidal
C.                 Tetrahedral       
D.                 Square planar
Answer» E.
Discussion
5154.

The electronic structure of molecule \[O{{F}_{2}}\] is a hybrid of

A.                 \[sp\]   
B.                 \[s{{p}^{2}}\]
C.                 \[s{{p}^{3}}\]    
D.                 \[s{{d}^{3}}\]
Answer» D.                 \[s{{d}^{3}}\]
Discussion
5155.

Octahedral molecular shape exists in .......... hybridisation [DPMT 1990]

A.                 \[s{{p}^{3}}d\]
B.                 \[s{{p}^{3}}{{d}^{2}}\]
C.                 \[s{{p}^{3}}{{d}^{3}}\]  
D.                 None of these
Answer» C.                 \[s{{p}^{3}}{{d}^{3}}\]  
Discussion
5156.

The d-orbital involved in \[s{{p}^{3}}d\] hybridisation is                 [J&K CET 2005]

A.                 \[{{d}_{{{x}^{2}}-{{y}^{2}}}}\]    
B.                 \[{{d}_{xy}}\]
C.                 \[{{d}_{{{z}^{2}}}}\]       
D.                 \[{{d}_{zx}}\]
Answer» B.                 \[{{d}_{xy}}\]
Discussion
5157.

The pair having similar geometry is          [J&K CET 2005]

A.                 \[PC{{l}_{3}},\ N{{H}_{3}}\]
B.                 \[BeC{{l}_{2}},\ {{H}_{2}}O\]
C.                 \[C{{H}_{4}},CC{{l}_{4}}\]            
D.                 \[I{{F}_{5}},\ P{{F}_{5}}\]
Answer» B.                 \[BeC{{l}_{2}},\ {{H}_{2}}O\]
Discussion
5158.

Which of the following hybridisation results in non-planar orbitals                                            [CBSE PMT 1991]

A.                 \[s{{p}^{3}}\]    
B.                 \[ds{{p}^{2}}\]
C.                 \[s{{p}^{2}}\]    
D.                 \[sp\]
Answer» B.                 \[ds{{p}^{2}}\]
Discussion
5159.

The linear structure is assumed by           [IIT 1991]

A.                 \[SnC{{l}_{2}}\]
B.                 \[NC{{O}^{-}}\]
C.                 \[C{{S}_{2}}\]    
D.                 \[NO_{2}^{+}\]
Answer» C.                 \[C{{S}_{2}}\]    
Discussion
5160.

If a molecule \[M{{X}_{3}}\] has zero dipole moment, the sigma bonding orbital used by M are [IIT 1981; MP PMT 1994; Kerala PMT 2004]

A.                 \[s{{p}^{3}}d-\]hybrid   
B.                 \[sp-\]hybrid
C.                 \[s{{p}^{3}}{{d}^{2}}-\]hybrid    
D.                 \[s{{p}^{2}}-\]hybrid
Answer» E.
Discussion
5161.

Hybridization is due to the overlapping of [MADT Bihar 1983]

A.                 Orbitals of different energy levels
B.                 Orbitals of different energy content
C.                 Orbitals of same energy content
D.                 None of the above
Answer» D.                 None of the above
Discussion
5162.

The valency of carbon is four. On what principle it can be explained in a better way

A.                 Resonance         
B.                 Hybridization
C.                 Electron transfer             
D.                 None of the above
Answer» C.                 Electron transfer             
Discussion
5163.

The trigonal bipyramidal geometry results from the hybridisation             [UPSEAT 2004]

A.                 \[ds{{p}^{3}}\] or \[s{{p}^{3}}d\]             
B.                 \[ds{{p}^{2}}\] or \[s{{p}^{2}}d\]
C.                 \[{{d}^{2}}s{{p}^{3}}\] or \[s{{p}^{3}}{{d}^{2}}\]               
D.                 \[{{d}^{3}}s{{p}^{2}}\] or \[{{d}^{2}}s{{p}^{3}}\]
Answer» B.                 \[ds{{p}^{2}}\] or \[s{{p}^{2}}d\]
Discussion
5164.

 Which of the following is non-linear molecule    [DCE 2003]

A.                 \[C{{O}_{3}}\]   
B.                 \[C{{O}_{2}}\]
C.                 \[C{{S}_{2}}\]    
D.                 \[BeC{{l}_{2}}\]
Answer» B.                 \[C{{O}_{2}}\]
Discussion
5165.

\[Be\] in \[BeC{{l}_{2}}\] undergoes       [MH CET 2004]

A.                 Diagonal hybridization
B.                 Trigonal hybridization
C.                 Tetrahedral hybridization
D.                 No hybridization
Answer» B.                 Trigonal hybridization
Discussion
5166.

 In which compound, the hydrogen bonding is the strongest in its liquid phase   [Pb. CET  2001]

A.                 \[HF\]  
B.                 \[HI\]
C.                 \[C{{H}_{4}}\]   
D.                 \[P{{H}_{3}}\]
Answer» B.                 \[HI\]
Discussion
5167.

 The hybrdization of \[I{{F}_{7}}\] is         [Pb. CET 2001]

A.                 \[s{{p}^{3}}{{d}^{3}}\]  
B.                 \[s{{p}^{2}}d\]
C.                 \[{{d}^{2}}s{{p}^{3}}\]  
D.                 \[s{{p}^{3}}\]
Answer» B.                 \[s{{p}^{2}}d\]
Discussion
5168.

\[Xe{{F}_{2}}\] involves hybridisation     [DPMT 1990]

A.                 \[s{{p}^{3}}\]    
B.                 \[s{{p}^{3}}d\]
C.                 \[s{{p}^{3}}{{d}^{2}}\]  
D.                 None of these
Answer» C.                 \[s{{p}^{3}}{{d}^{2}}\]  
Discussion
5169.

 Which of the following molecules has pyramidal shape [DCE 2004; J&K CET 2005]

A.                 \[PC{{l}_{3}}\]  
B.                 \[S{{O}_{3}}\]
C.                 \[CO_{3}^{2-}\]               
D.                 \[NO_{3}^{-}\]
Answer» B.                 \[S{{O}_{3}}\]
Discussion
5170.

 The hybrid state of sulphur in \[S{{O}_{3}}\] molecule is               [DCE 2004]

A.                 \[s{{p}^{3}}d\] 
B.                 \[s{{p}^{3}}\]
C.                 \[s{{p}^{3}}{{d}^{2}}\]  
D.                 \[s{{p}^{2}}\]
Answer» E.
Discussion
5171.

 The state of hybridisation of \[B\] in \[BC{{l}_{3}}\] is [Pb. CET 2000; BHU 2004]

A.                 \[sp\]   
B.                 \[s{{p}^{2}}\]
C.                 \[s{{p}^{3}}\]    
D.                 \[s{{p}^{2}}{{d}^{2}}\]
Answer» C.                 \[s{{p}^{3}}\]    
Discussion
5172.

Which set hydridisation is correct for the following compounds  [Pb. CET 2003]

A.                 \[N{{O}_{2}}\]-\[sp\],        \[S{{F}_{4}}\]-\[s{{p}^{2}}\],        \[PF_{6}^{-}\]-\[s{{p}^{3}}\]
B.                 \[N{{O}_{2}}\]-\[sp\],        \[S{{F}_{4}}\]-\[s{{p}^{3}}d\],      \[PF_{6}^{-}\]-\[s{{p}^{3}}{{d}^{2}}\]
C.                 \[N{{O}_{2}}\]-\[s{{p}^{2}}\],      \[S{{F}_{4}}\]-\[s{{p}^{3}}\],         \[PF_{6}^{-}\]-\[{{d}^{2}}s{{p}^{3}}\]
D.                 \[N{{O}_{2}}\]-\[s{{p}^{3}}\],      \[S{{F}_{4}}\]-\[s{{p}^{3}}{{d}^{2}}\],     \[PF_{6}^{-}\]-\[s{{p}^{3}}{{d}^{2}}\]
Answer» C.                 \[N{{O}_{2}}\]-\[s{{p}^{2}}\],      \[S{{F}_{4}}\]-\[s{{p}^{3}}\],         \[PF_{6}^{-}\]-\[{{d}^{2}}s{{p}^{3}}\]
Discussion
5173.

 \[s{{p}^{3}}\] hybridisation is found in                                 [Pb. CET 2003; Orissa JEE 2005]

A.                 \[CO_{3}^{2-}\]               
B.                 \[B{{F}_{3}}\]
C.                 \[NO_{3}^{-}\] 
D.                 \[N{{H}_{3}}\]
Answer» E.
Discussion
5174.

The molecule of \[C{{O}_{2}}\] has 180° bond angle. It can be explanid on the basis of                                    [AFMC 2004]

A.                 \[s{{p}^{3}}\] hybridisation         
B.                 \[s{{p}^{2}}\] hybridisation
C.                 \[sp\] hybridisation        
D.                 \[{{d}^{2}}s{{p}^{3}}\] hybridization
Answer» D.                 \[{{d}^{2}}s{{p}^{3}}\] hybridization
Discussion
5175.

Among the compounds, \[B{{F}_{3}},NC{{l}_{3}},{{H}_{2}}S,S{{F}_{4}}\]and \[BeC{{l}_{2}}\], identify the ones in which the central atom has the same type of hybridisation                                               [Kerala PMT 2004]

A.                 \[B{{F}_{3}}\] and \[NC{{l}_{3}}\]             
B.                 \[{{H}_{2}}S\]and \[BeC{{l}_{2}}\]
C.                 \[B{{F}_{3}},NC{{l}_{3}}\]and \[{{H}_{2}}S\]        
D.                 \[S{{F}_{4}}\]and \[BeC{{l}_{2}}\]
E.                 \[NC{{l}_{3}}\] and \[{{H}_{2}}S\]
Answer» F.
Discussion
5176.

The hybridisation in \[B{{F}_{3}}\] molecule is    [Pb. PMT 2004]

A.                 \[sp\]   
B.                 \[s{{p}^{2}}\]
C.                 \[s{{p}^{3}}\]    
D.                 \[s{{p}^{3}}d\]
Answer» C.                 \[s{{p}^{3}}\]    
Discussion
5177.

The states of hybridazation of boron and oxygen atoms in boric acid \[({{H}_{3}}B{{O}_{3}})\] are respectively   [AIEEE 2004]

A.                 \[s{{p}^{3}}\] and \[s{{p}^{2}}\]               
B.                 \[s{{p}^{2}}\] and \[s{{p}^{3}}\]
C.                 \[s{{p}^{2}}\] and \[s{{p}^{2}}\]               
D.                 \[s{{p}^{3}}\]and \[s{{p}^{3}}\]
Answer» C.                 \[s{{p}^{2}}\] and \[s{{p}^{2}}\]               
Discussion
5178.

Which one of the following has the regular tetrahedral structure                                              [AIEEE 2004]

A.                 \[BF_{4}^{-}\]   
B.                 \[S{{F}_{4}}\]
C.                 \[Xe{{F}_{4}}\] 
D.                 \[{{\left[ Ni{{(CN)}_{4}} \right]}^{2-}}\] (Atomic no. : \[B=5,S=16,Ni=28,Xe=54\])
Answer» B.                 \[S{{F}_{4}}\]
Discussion
5179.

The correct order of bond angles (smallest first) in \[{{H}_{2}}S,N{{H}_{3}},B{{F}_{3}}\]and \[Si{{H}_{4}}\]is          [AIEEE 2004]

A.                 \[{{H}_{2}}S<N{{H}_{3}}<Si{{H}_{4}}<B{{F}_{3}}\]
B.                 \[N{{H}_{3}}<{{H}_{2}}S<Si{{H}_{4}}<B{{F}_{3}}\]
C.                 \[{{H}_{2}}S<Si{{H}_{4}}<N{{H}_{3}}<B{{F}_{3}}\]
D.                 \[{{H}_{2}}S<N{{H}_{3}}<B{{F}_{3}}<Si{{H}_{4}}\]
Answer» D.                 \[{{H}_{2}}S<N{{H}_{3}}<B{{F}_{3}}<Si{{H}_{4}}\]
Discussion
5180.

In an octahedral structure, the pair of d orbitals involved in \[{{d}^{2}}s{{p}^{3}}\] hybridization is             [CBSE PMT 2004]

A.                 \[{{d}_{{{x}^{2}}}},{{d}_{xz}}\]  
B.                 \[{{d}_{xy}},{{d}_{yz}}\]
C.                 \[{{d}_{{{x}^{2}}-{{y}^{2}}}},{{d}_{{{z}^{2}}}}\]  
D.                 \[{{d}_{xz}},{{d}_{{{x}^{2}}-{{y}^{2}}}}\]
Answer» D.                 \[{{d}_{xz}},{{d}_{{{x}^{2}}-{{y}^{2}}}}\]
Discussion
5181.

\[s{{p}^{3}}{{d}^{2}}\] hybrid orbitals are              [MP PET 2004]

A.                 Linear bipyramidal          
B.                 Pentagonal
C.                 Trigonal bipyramidal      
D.                 Octahedral
Answer» E.
Discussion
5182.

Which of the following has a linear structure       [MP PMT 2004]

A.                 \[CC{{l}_{4}}\]  
B.                 \[{{C}_{2}}{{H}_{2}}\]
C.                 \[S{{O}_{2}}\]   
D.                 \[{{C}_{2}}{{H}_{4}}\]
Answer» C.                 \[S{{O}_{2}}\]   
Discussion
5183.

In a regular octahedral molecule, \[M{{X}_{6}}\], the number \[X-M-X\] bonds at 180° is               [CBSE PMT 2004]

A.                 Six         
B.                 Four
C.                 Three   
D.                 Two
Answer» D.                 Two
Discussion
5184.

The molecule which is pyramid shape is [MP PMT 2004; EAMCET 1985; IIT 1989]

A.                 \[PC{{l}_{3}}\]  
B.                 \[CO_{3}^{2-}\]
C.                 \[S{{O}_{3}}\]   
D.                 \[NO_{3}^{-}\]
Answer» B.                 \[CO_{3}^{2-}\]
Discussion
5185.

Among the following compounds the one that is polar and has central atom with \[s{{p}^{2}}-\]hybridization is                                                                 [MP PMT 2004; IIT 1997]

A.                 \[{{H}_{2}}C{{O}_{3}}\] 
B.                 \[B{{F}_{3}}\]
C.                 \[Si{{F}_{4}}\]   
D.                 \[HCl{{O}_{2}}\]
Answer» B.                 \[B{{F}_{3}}\]
Discussion
5186.

Which one has \[s{{p}^{2}}-\]hybridisation          [MP PMT 2004]

A.                 \[C{{O}_{2}}\]   
B.                 \[{{N}_{2}}O\]
C.                 \[S{{O}_{2}}\]   
D.                 \[CO\]
Answer» D.                 \[CO\]
Discussion
5187.

Arrange the hydra-acids of halogens in increasing order of acidity                                             [Orissa JEE 2003]

A.                 \[HF<HCl<HBr<HI\]        
B.                 \[HI<HBr<HCl<HF\]
C.                 \[HF<HBr<HI<HCl\]        
D.                 \[HF<HI<HBr<HCl\]
Answer» B.                 \[HI<HBr<HCl<HF\]
Discussion
5188.

 The percentage s-character of the hybrid orbitals in methane, ethene and ethyne are respectively [KCET 2003]

A.                 25, 33, 50            
B.                 25, 50, 75
C.                 50, 75, 100          
D.                 10, 20, 40
Answer» B.                 25, 50, 75
Discussion
5189.

The mode of hybridisation of carbon in\[s{{p}^{2}}

A.                 \[sp\]   
B.                 \[s{{p}^{2}}\]
C.                 \[s{{p}^{3}}\]    
D.                 None of these
Answer» B.                 \[s{{p}^{2}}\]
Discussion
5190.

Which of the following bonds require the largest amount of bond energy to dissociate the atom concerned [UPSEAT 2003]

A.                 \[HH\] bond in \[{{H}_{2}}\]       
B.                         \[CC\] bond in \[C{{H}_{4}}\]
C.                 \[N\equiv N\] bond in \[{{N}_{2}}\]       
D.                 \[O=O\] bond in \[{{O}_{2}}\]
E.                 \[CC\] bond in ethane
Answer» D.                 \[O=O\] bond in \[{{O}_{2}}\]
Discussion
5191.

 Which of the following compounds doesn?t have linear structure             [RPET 1997, 2003]

A.                 \[C{{O}_{2}}\]   
B.                 \[S{{O}_{2}}\]
C.                 \[BeC{{l}_{2}}\]
D.                 \[{{C}_{2}}{{H}_{2}}\]
Answer» C.                 \[BeC{{l}_{2}}\]
Discussion
5192.

 Which one of the following is a planar molecule                [EAMCET 2003]

A.                 \[N{{H}_{3}}\]  
B.                 \[{{H}_{3}}{{O}^{+}}\]
C.                 \[BC{{l}_{3}}\]  
D.                 \[PC{{l}_{3}}\]
Answer» D.                 \[PC{{l}_{3}}\]
Discussion
5193.

Which of the following has \[ds{{p}^{2}}\]hybridization [MP PET 2003]

A.                 \[NiCl_{4}^{2-}\]             
B.                 \[SC{{l}_{4}}\]
C.                 \[NH_{4}^{+}\]
D.                 \[PtCl_{4}^{2-}\]
Answer» E.
Discussion
5194.

The bond energies of \[H-H\] and \[ClCl\] are 430 kJ \[\text{mo}{{\text{l}}^{-1}}\]and 242 kJ \[\text{mo}{{\text{l}}^{-1}}\] respectively, \[\Delta {{H}_{t}}\] for HCl is 91 kJ mol-1. The bond energy of HCl will be      [MP PET 2003]

A.                 427 kJ   
B.                 766 kJ
C.                 285 kJ   
D.                 245 kJ
Answer» E.
Discussion
5195.

In benzene, all the six \[CC\] bonds have the same length because of                                    [MP PET 2002]

A.                 Tautomerism    
B.                 \[s{{p}^{2}}\]hybridization
C.                 Isomerism          
D.                 Inductive effect
Answer» C.                 Isomerism          
Discussion
5196.

A square planar complex is formed by hybridisation of which atomic orbitals       [AIEEE 2002]

A.                 \[s,\,\,{{p}_{x}},\,\,{{p}_{y}},\,\,{{d}_{yz}}\]       
B.                 \[s,\,\,{{p}_{x}},\,\,{{p}_{y}},\,\,{{d}_{{{x}^{2}}-{{y}^{2}}}}\]
C.                 \[s,\,\,{{p}_{x}},\,\,{{p}_{y,\,\,}}{{d}_{{{z}^{2}}}}\]          
D.                 \[s,\,\,{{p}_{y}},\,\,{{p}_{z}},{{d}_{xy}}\]
Answer» C.                 \[s,\,\,{{p}_{x}},\,\,{{p}_{y,\,\,}}{{d}_{{{z}^{2}}}}\]          
Discussion
5197.

 Which has \[s{{p}^{3}}\] hybridization of central atom [UPSEAT 2002]

A.                 \[PC{{l}_{3}}\]  
B.                 \[S{{O}_{3}}\]
C.                 \[B{{F}_{3}}\]    
D.                 \[NO{}_{3}^{-}\]
Answer» B.                 \[S{{O}_{3}}\]
Discussion
5198.

In which of the following species is the interatomic bond angle is \[{{109}^{o}}2{8}'\]      [AIEEE 2002]

A.                 \[N{{H}_{3}},\,\,{{(B{{F}_{4}})}^{-1}}\]  
B.                 \[{{(N{{H}_{4}})}^{+}},\,\,B{{F}_{3}}\]
C.                 \[N{{H}_{3}},\,\,B{{F}_{4}}\]      
D.                 \[{{(N{{H}_{2}})}^{-1}},\,\,B{{F}_{3}}\]
Answer» B.                 \[{{(N{{H}_{4}})}^{+}},\,\,B{{F}_{3}}\]
Discussion
5199.

Which of the following statement is not correct                                                                 [AIIMS 1983]

A.                 Hybridization is the mixing of atomic orbitals prior to their combining into molecular orbitals
B.                 \[s{{p}^{2}}\]hybrid orbitals are formed from two \[p\]atomic orbitals and one \[HCl\]atomic orbital
C.                 \[{{d}^{2}}s{{p}^{3}}\]hybrid orbitals are directed towards the corners of a regular octahedron
D.                 \[ds{{p}^{3}}\]hybrid orbitals are all at \[{{90}^{o}}\]to one another
Answer» E.
Discussion
5200.

The shape of \[I{{F}_{7}}\]molecule is [AFMC 2002; MHCET 2003]

A.                 Octahedral         
B.                 Pentagonal bipyramidal
C.                 Trigonal bipyramidal      
D.                 Tetrahedral
Answer» C.                 Trigonal bipyramidal      
Discussion