JEE Main > Chemical Bonding and Molecular Structure

Explore popular questions from Chemical Bonding and Molecular Structure for JEE Main. This collection covers Chemical Bonding and Molecular Structure previous year JEE Main questions hand picked by popular teachers.

Physics
Physical World and Measurement Kinematics Vectors Laws of Motion Work, Energy and Power Motion of System of Particles and Rigid Body Gravitation Properties of Bulk Matter Thermodynamics Behaviour of Perfect Gas and Kinetic Theory Oscillations and Waves Electrostatics Current Electricity Magnetic Effects of Current and Magnetism Electromagnetic Induction and Alternating Currents Electromagnetic Waves Optics Dual Nature of Matter and Radiation Atoms and Nuclei Electronic Devices & Semiconductor Communication System Physics
Chemistry
Some Basic Concepts of Chemistry Structure of Atom Classification of Elements and Periodicity in Properties Chemical Bonding and Molecular Structure States of Matter: Gases and Liquids Equilibrium Redox Reactions Hydrogen s-Block Element (Alkali and Alkaline earth metals) Some p-Block Elements Organic Chemistry- Some Basic Principles and Techniques Hydrocarbons Environmental Chemistry Solid State Solutions Electrochemistry Chemical Kinetics Surface Chemistry General Principles and Processes of Isolation of Elements p-Block Elements d and f Block Elements Coordination Compounds Haloalkanes and Haloarenes Alcohols, Phenols and Ethers Aldehydes, Ketones and Carboxylic Acids Organic Compounds Containing Nitrogen Amines Biomolecules Polymers Chemistry in Everyday Life Thermodynamics Chemistry
Maths
Sets, Relations and Functions Algebra Permutations and Combinations Coordinate Geometry Circle and System of Circles Calculus Mathematical Reasoning Statistics and Probability Properties of Triangle Vectors and Three-Dimensional Geometry Linear Programming Matrices and Determinants Trigonometric Ratios & Identities Mathematics 



		

			

				Q 1.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						In which of the following species the interatomic bond angle is {tex} 109 ^ { \circ } 28 ^ { \text {' } } {/tex} ?					

				

				
	
										

						

							
							

							
{tex} \mathrm { NH } _ { 3 } , \left( \mathrm { BF } _ { 4 } \right) ^ { - 1 } {/tex}

						

					

										

						

							
							
B

							
{tex} \left( \mathrm { NH } _ { 4 } \right) ^ { + } , \mathrm { BF } _ { 3 } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { NH } _ { 3 } , \mathrm { BF } _ { 4 } {/tex}

						

					

										

						

							
							
D

							
{tex} \left( \mathrm { NH } _ { 2 } \right) ^ { - 1 } , \mathrm { BF } _ { 3 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 2.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						An ether is more volatile than an alcohol having the same molecular formula. This is due to					

				

				
	
										

						

							
							
A

							
alcohols having resonance structures

						

					

										

						

							
							
B

							
inter-molecular hydrogen bonding in ethers

						

					

										

						

							
							

							
inter-molecular hydrogen bonding in alcohols

						

					

										

						

							
							
D

							
dipolar character of ethers

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 3.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Which one of the following pairs of molecules will have permanent dipole moments for both members?					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { NO } _ { 2 } {/tex} and {tex} \mathrm { CO } _ { 2 } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { NO } _ { 2 } {/tex} and {tex} \mathrm { O } _ { 3 } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { SiF } _ { 4 } {/tex} and {tex} \mathrm { CO } _ { 2 } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { SiF } _ { 4 } {/tex} and {tex} \mathrm { NO } _ { 2 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 4.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Which one of the following compounds has the smallest bond angle in its molecule?					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { OH } _ { 2 } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { SH } _ { 2 } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { NH } _ { 3 } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { SO } _ { 2 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 5.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The pair of species having identical shapes for molecules of both species is					

				

				
	
										

						

							
							

							
{tex} \mathrm { XeF } _ { 2 } , \mathrm { CO } _ { 2 } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { BF } _ { 3 } , \mathrm { PCl } _ { 3 } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { PF } _ { 5 } , \mathrm { IF } _ { 5 } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { CF } _ { 4 } , \mathrm { SF } _ { 4 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 6.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The correct order of bond angles (smallest first) in {tex} \mathrm { H } _ { 2 } \mathrm { S } {/tex} , {tex} \mathrm { NH } _ { 3 } , \mathrm { BF } _ { 3 } {/tex} and {tex} \mathrm { SiH } _ { 4 } {/tex} is					

				

				
	
										

						

							
							

							
{tex} \mathrm { H } _ { 2 } \mathrm { S } < \mathrm { NH } _ { 3 } < \mathrm { SiH } _ { 4 } < \mathrm { BF } _ { 3 } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { NH } _ { 3 } < \mathrm { H } _ { 2 } \mathrm { S } < \mathrm { SiH } _ { 4 } < \mathrm { BF } _ { 3 } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { H } _ { 2 } \mathrm { S } < \mathrm { SiH } _ { 4 } < \mathrm { NH } _ { 3 } < \mathrm { BF } _ { 3 } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { H } _ { 2 } \mathrm { S } < \mathrm { NH } _ { 3 } < \mathrm { BF } _ { 3 } < \mathrm { SiH } _ { 4 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 7.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The bond order in NO is 2.5 while that in {tex} \mathrm { NO } ^ { + } {/tex} is {tex} 3 . {/tex} Which of the following statements is true for these two species?					

				

				
	
										

						

							
							
A

							
Bond length in {tex} \mathrm { NO } ^ { + } {/tex} is equal to that in {tex} \mathrm { NO } {/tex}

						

					

										

						

							
							

							
Bond length in  {tex} \mathrm { NO } {/tex} is greater than in {tex} \mathrm { NO } ^ { + } {/tex}

						

					

										

						

							
							
C

							
Bond length in {tex} \mathrm { NO } ^ { + } {/tex} is greater than in {tex} \mathrm { NO } {/tex}

						

					

										

						

							
							
D

							
Bond length is unpredictable

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 8.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The states of hybridization of boron and oxygen atoms in boric acid {tex} \left( \mathrm { H } _ { 3 } \mathrm { BO } _ { 3 } \right) {/tex} are respectively					

				

				
	
										

						

							
							
A

							
{tex} s p ^ { 3 } {/tex} and {tex} s p ^ { 2 } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { sp } ^ { 2 } {/tex} and {tex} \mathrm { sp } ^ { 3 } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { sp } ^ { 2 } {/tex} and {tex} \mathrm { sp } ^ { 2 } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { sp } ^ { 3 } {/tex} and {tex} \mathrm { sp } ^ { 3 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 9.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Which one of the following has the regular tetrahedral structure?					

				

				
	
										

						

							
							

							
{tex} \mathrm { BF } _ { 4 } ^ { - } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { SF } _ { 4 } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { XeF } _ { 4 } {/tex}

						

					

										

						

							
							
D

							
{tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { 2 - } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 10.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The maximum number of {tex} 90 ^ { \circ } {/tex} angles between bond pair-bond pair of electrons is observed in					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { dsp } ^ { 2 } {/tex} hybridization

						

					

										

						

							
							
B

							
{tex} \mathrm { sp } ^ { 3 } \mathrm { d } {/tex} hybridization

						

					

										

						

							
							
C

							
{tex} \mathrm { dsp } ^ { 3 } {/tex} hybridization

						

					

										

						

							
							

							
{tex} \mathrm { sp } ^ { 3 } \mathrm { d } ^ { 2 } {/tex} hybridization

						

					

										
					


					

						
Explanation

						

						





						

					



				

			

		

	





		

			

				Q 11.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Lattice energy of an ionic compound depends upon					

				

				
	
										

						

							
							

							
Charge on the ion and size of the ion

						

					

										

						

							
							
B

							
Packing of ions only

						

					

										

						

							
							
C

							
Size of the ion only

						

					

										

						

							
							
D

							
Charge on the ion only

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 12.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Which of the following molecules/ions does not contain unpaired electrons?					

				

				
	
										

						

							
							
A

							
{tex} N _ { 2 } ^ { + } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { O } _ { 2 } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { O } _ { 2 } ^ { 2 - } {/tex}

						

					

										

						

							
							
D

							
{tex} B _ { 2 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 13.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						In which of the following molecules/ions are all the bonds not equal?					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { XeF } _ { 4 } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { BF } _ { 4 } ^ { - } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { SF } _ { 4 } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { SiF } _ { 4 } {/tex}

						

					

										
					


					

						
Explanation

						

						



						

					



				

			

		

	





		

			

				Q 14.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The decreasing values of bond angles from {tex} \mathrm { NH } _ { 3 } \left( 106 ^ { \circ } \right) {/tex} to {tex} \mathrm { SbH } _ { 3 } \left( 101 ^ { \circ } \right) {/tex} down group- 15 of the periodic table is due to					

				

				
	
										

						

							
							
A

							
decreasing lp-bp repulsion

						

					

										

						

							
							

							
decreasing electronegativity

						

					

										

						

							
							
C

							
increasing bp-bp repulsion

						

					

										

						

							
							
D

							
increasing p-orbital character in {tex} \mathrm { sp } ^ { 3 } {/tex}

						

					

										
					


					

						
Explanation

						

						



						

					



				

			

		

	





		

			

				Q 15.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Which of the following species exhibits the diamagnetic behaviour?					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { NO } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { O } _ { 2 } ^ { 2 - } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { O } _ { 2 } ^ { + } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { O } _ { 2 } {/tex}

						

					

										
					


					

						
Explanation

						

						



						

					



				

			

		

	





		

			

				Q 16.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing power of the cationic
species, {tex} \mathrm { K } ^ { + } , \mathrm { Ca } ^ { 2 + } , \mathrm { Mg } ^ { 2 + } , \mathrm { Be } ^ { 2 + } ? {/tex}
					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { Ca } ^ { 2 + } < \mathrm { Mg } ^ { 2 + } < \mathrm { Be } ^ { + } < \mathrm { K } ^ { + } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { Mg } ^ { 2 + } < \mathrm { Be } ^ { 2 + } < \mathrm { K } ^ { + } < \mathrm { Ca } ^ { 2 + } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { Be } ^ { 2 + } < \mathrm { K } ^ { + } < \mathrm { Ca } ^ { 2 + } < \mathrm { Mg } ^ { 2 + } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { K } ^ { + } < \mathrm { Ca } ^ { 2 + } < \mathrm { Mg } ^ { 2 + } < \mathrm { Be } ^ { 2 + } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 17.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { N } _ { 2 } \rightarrow \mathrm { N } _ { 2 } ^ { + } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { C } _ { 2 } \rightarrow \mathrm { C } _ { 2 } ^ { + } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { NO } \rightarrow \mathrm { NO } ^ { + } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { O } _ { 2 } \rightarrow \mathrm { O } _ { 2 } ^ { + } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 18.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Which of the following hydrogen bonds is the strongest?					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { O } - \mathrm { H } - - - \mathrm { F } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { O } - \mathrm { H } --- \mathrm { H } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { F } - \mathrm { H } --- \mathrm { F } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { O } - \mathrm { H } - - - \mathrm { O } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 19.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Which one of the following pairs of species have the same bond order?					

				

				
	
										

						

							
							

							
{tex} \mathrm { CN } ^ { - } {/tex} and {tex} \mathrm { NO } ^ { + } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { CN } ^ { - } {/tex} and {tex} \mathrm { CN } ^ { + } {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { O } _ { 2 } ^ { - } {/tex} and {tex} \mathrm { CN } ^ { - } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { NO } ^ { + } {/tex} and {tex} \mathrm { CN } ^ { + } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 20.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The bond dissociation energy of {tex} \mathrm { B } - \mathrm { F } {/tex} in {tex} \mathrm { BF } _ { 3 } {/tex} is {tex}646 \, \mathrm { kJ } \mathrm { mol } ^ { - 1 } {/tex} whereas that of {tex} \mathrm { C } - \mathrm { F } {/tex} in {tex} \mathrm { CF } _ { 4 } {/tex} is {tex} 515\,  \mathrm{kJ}\mathrm { mol } ^ { - 1 } {/tex} . The correct reason for higher {tex} \mathrm { B } - \mathrm { F } {/tex} bond dissociation energy as compared to that of {tex} \mathrm { C } - \mathrm { F } {/tex} is					

				

				
	
										

						

							
							
A

							
stronger {tex} \sigma {/tex} bond between {tex} \mathrm { B } {/tex} and {tex} \mathrm { F } {/tex} in {tex} \mathrm { BF } _ { 3 } {/tex} as compared to that between {tex} \mathrm { C } {/tex} and {tex} \mathrm { F } {/tex} in {tex} \mathrm { CF } _ { 4 } {/tex} .

						

					

										

						

							
							

							
significant  {tex} p\pi - p \pi {/tex} interaction between {tex} B {/tex} and {tex} F {/tex} in {tex} B F _ { 3 } {/tex} whereas there is no possibility of such interaction between {tex} C {/tex} and {tex} F {/tex} in {tex} C F _ { 4 } {/tex} .

						

					

										

						

							
							
C

							
lower degree of  {tex}p \pi - \mathrm { p } \pi {/tex} interaction between {tex} \mathrm { B } {/tex} and {tex} \mathrm { F } {/tex} in {tex} \mathrm { BF } _ { 3 } {/tex} than that between {tex} \mathrm { C } {/tex} and {tex} \mathrm { F } {/tex} in {tex} \mathrm { CF } _ { 4 } {/tex}.

						

					

										

						

							
							
D

							
smaller size of {tex} \mathrm { B } - {/tex} atom as compared to that of {tex} \mathrm { C } {/tex} - atom.

						

					

										
					


					

						
Explanation

						

						





						

					



				

			

		

	





		

			

				Q 21.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Using MO theory, predict which of the following species has the shortest bond length?					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { O } _ { 2 } ^ { + } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { O } _ { 2 }^- {/tex}

						

					

										

						

							
							
C

							
{tex} \mathrm { O } _ { 2 } ^ { 2 - } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { O } _ { 2 } ^ { 2 + } {/tex}

						

					

										
					


					

						
Explanation

						

						



						

					



				

			

		

	





		

			

				Q 22.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Among the following the maximum covalent character is shown by the compound					

				

				
	
										

						

							
							
A

							
{tex} \mathrm { FeCl } _ { 2 } {/tex}

						

					

										

						

							
							
B

							
{tex} \mathrm { SnCl } _ { 2 } {/tex}

						

					

										

						

							
							

							
{tex} \mathrm { AlCl } _ { 3 } {/tex}

						

					

										

						

							
							
D

							
{tex} \mathrm { MgCl } _ { 2 } {/tex}

						

					

										
					


					

						
Explanation

						

						

						

					



				

			

		

	





		

			

				Q 23.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The hybridization of orbitals of  N atom in {tex} \mathrm { NO } _ { 3 } ^ { - } , \mathrm { NO } _ { 2 } ^ { + } {/tex} and {tex} \mathrm { NH } _ { 4 } ^ { + } {/tex} are respectively:					

				

				
	
										

						

							
							
A

							
{tex} s p , s p ^ { 2 } , s p ^ { 3 } {/tex}

						

					

										

						

							
							

							
{tex} s p ^ { 2 } , s p , s p ^ { 3 } {/tex}

						

					

										

						

							
							
C

							
{tex} s p , s p ^ { 3 } , s p ^ { 2 } {/tex}

						

					

										

						

							
							
D

							
{tex} s p ^ { 2 } , s p ^ { 3 } , s p {/tex}

						

					

										
					


					

						
Explanation

						

						







						

					



				

			

		

	





		

			

				Q 24.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						The structure of IF{tex}_{ 7 } {/tex} is					

				

				
	
										

						

							
							
A

							
square pyramidal

						

					

										

						

							
							
B

							
trigonal bipyramidal

						

					

										

						

							
							
C

							
octahedral

						

					

										

						

							
							

							
pentagonal bipyramidal

						

					

										
					


					

						
Explanation

						

						



						

					



				

			

		

	





		

			

				Q 25.   
				   
				
Correct4

				
Incorrect-1

			

			
		

		

			
			

				

					

						Ortho-Nitrophenol is less soluble in water than {tex} p {/tex} - and {tex} m - {/tex} Nitrophenols because:					

				

				
	
										

						

							
							
A

							
o-Nitrophenol is more volatile steam than those of {tex} m{/tex} and {tex} p{/tex}-isomers.

						

					

										

						

							
							

							
o-Nitrophenol shows intramolecular H-bonding

						

					

										

						

							
							
C

							
o-Nitrophenol shows intermolecular H-bonding

						

					

										

						

							
							
D

							
Melting point of {tex} o - {/tex} Nitrophenol is lower than those of {tex} m {/tex} -and {tex} p {/tex} -isomers.

						

					

										
					


					

						
Explanation

						

						




						

					



				

			

		

	













 






	

		

			

			

















Sign up for a  free Trial


Fill in your details. We will get in touch with you and onboard

your institute with the free trial!









			
		







			
		



			
		







			
		



			
		







			
		







			
		



			
		







			
		






		

	






	

		

			

			

				Your request has been placed successfully. 
			

			

				Okay