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Class 11 chemistry MCQ Question of Chemical Bonding and Molecular Structure with Answers?

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Practice more consistently with these Class 11 chemistry MCQ questions of Chemical Bonding and Molecular Structure with Answers on and work regarding your knowledge and problem-solving abilities alongside using time effectively. These MCQ Questions will assist you with checking your preparation level to find out about how long will you needs give more on these subjects.

Chemistry is the scoring paper on the Board and competitive test. Here, you will find the Class 11 chemistry MCQ questions with Answers for all Ideas according to the most recent syllabus. MCQ Questions for Class 11 chemistry cause you to feel confident about solving the questions in the exam and builds your scores to high.

Let's practice the offered MCQ Questions for Class 11 with details explanation.

Practice MCQ Questions for class 11 Chemistry Chapter-Wise

1. The bond length between hybridised carbon atom and other carbon atom is minimum in

(a) Propane
(b) Butane
(c) Propene
(d) Propyne

2. The bond length between hybridised carbon atom and other carbon atom is minimum in

(a) 1
(b) 2
(c) 0
(d) 3

3. The hybrid state of sulphur in SO2 molecule is :

(a) sp2
(b) sp3
(c) sp
(d) sp3d

4. Which one of the following does not have sp2 hybridised carbon?

(a) Acetone
(b) Acetic acid
(c) Acetonitrile
(d) Acetamide

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

(a) MgCl2
(b) FeCl2
(c) SnCl2
(d) AlCl3

6. Among the following mixtures, dipole-dipole as the major interaction,is present in

(a) benzene and ethanol
(b) acetonitrile and acetone
(c) KCl and water
(d) benzene and carbon tetrachloride

7. Which of the following types of hybridisation leads to three dimensional geometry of bonds around the carbon atom?

(a) sp
(b) sp2
(c) sp3
(d) None of these

8. An atom of an element A has three electrons in its outermost orbit and that of B has six electrons in its outermost orbit. The formula of the compound between these two will be

(a) A3B6
(b) A2B3
(c) A3B2
(d) A2B

9. The maximum number of hydrogen bonds that a molecule of water can have is

(a) 1
(b) 2
(c) 3
(d) 4

10. The number of types of bonds between two carbon atoms in calcium carbide is

(a) Two sigma, two pi
(b) One sigma, two pi
(c) One sigma, one pi
(d) Two sigma, one pi

11. Based on lattice enthalpy and other considerations which one the following alkali metals chlorides is expected to have the higher melting point?

(a) RbCl
(b) KCl
(c) NaCl
(d) LiCl

12. Dipole-induced dipole interactions are present in which of the following pairs?

(a) H2O and alcohol
(b) Cl2 and CCl4
(c) HCl and He atoms
(d) SiF4 and He atoms

13. The structure of IF7 is

(a) Pentagonal bipyramid
(b) Square pyramid
(c) Trigonal bipyramid
(d) Octahedral

14. The outer orbitals of C in ethene molecule can be considered to be hybridized to give three equivalent sp² orbitals. The total number of sigma (s) and pi (p) bonds in ethene molecule is

(a) 1 sigma (s) and 2 pi (p) bonds
(b) 3 sigma (s) and 2 pi (p) bonds
(c) 4 sigma (s) and 1 pi (p) bonds
(d) 5 sigma (s) and 1 pi (p) bonds

15. Which of the following is a linear molecule?

(a) ClO2
(b) CO2
(c) NO2
(d) SO2

16. The attractive force which holds various constituents (atoms, ions etc.) together in different chemical species is called a

(a) chemical bond
(b) ionic bond
(c) chemical compound
(d) covalent bond

17. In the formation of a molecule which of the following take part in chemical combination?

(a) valence electron
(b) cation
(c) anion
(d) inner shell electron

18. Cation and anion combines in a crystal to form following type of compound

(a) ionic
(b) covalent
(c) metallic
(d) dipole-dipole

19. In N2 molecule, the number of electrons shared by each nitrogen atom is

(a) 3
(b) 2
(c) 5
(d) None of these

20. In which of the following molecules octet rule is not followed?

(a) NO
(b) CH4
(c) NH3
(d) CO2

21. Which of the following pairs will form the most stable ionic bond?

(a) Mg and F
(b) Na and F
(c) Na and Cl
(d) Li and F

22. The number of hydrogen bonded water molecules(s) associated with CuSO4,5H2O is

(a) 3
(b) 1
(c) 2
(d) 5

23. The species, having bond angles of \(120^\circ\) is :

(a) SF6
(b) NCl3
(c) BCl3
(d) PH3

24. A compound that shows the presence of intramolecular hydrogen bond is - 

(a) H2O2
(b) HCN
(c) Cellulose
(d) Concentrated acetic acid

25. What is the dominant intermolecular force on bond that must be overcome in converting liquid CH3OH to a gas?

(a) Hydrogen bonding
(b) Dipole-dipole interaction
(c) Covalent bonds
(d) London dispersion force

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Answer :

1. Answer: (d) Propyne

Explanation : The C – C bond length = 1.54 Å, C = C bond length = 1.34 Å and C ≡ C bond length = 1.20 Å.Since propyne has a triple bond, therefore it has minimum bond length.

2.  Answer: 1

Explanation: In an antibonding molecular orbital, most of the electron density is located away from the space between the nuclei, as a result of which there is a nodal plane (ie, a plane at which the electron density is zero) between the nuclei.

3.  Answer: (a) sp2

Explanation: The hybridisation of sulphur in SO2 is sp2. Sulphur atom has one lone pair of electrons and two bonding domains. Bond angle is <120° and molecular geometry is V-shape, bent or angular.

4. Answer: (c) Acetonitrile

Explanation: Acetonitrile does not contain sp2 hybridized carbon.

5. Answer: (d) AlCl3

Explanation: Greater the charge and smaller the size of the cation (i:e Al+3), reater the charge density, greater the polarization hence greater is the covalent character. i.e.AlCl3

6. Answer: (b) acetonitrile and acetone

Explanation: Dipole-dipole interactions occur among the polar molecules. Polar molecules have permanent dipoles. The positive pole of one molecule is thus attracted by the negative pole of the other molecule. The magnitude of dipole-dipole forces in different polar molecules is predicted on the basis of the polarity of the molecules, which in turn depends upon the electro negativities of the atoms present in the molecule and the geometry of the molecule (in case of polyatomic molecules, containing more than two atoms in a molecule).

7. Answer: (b) sp2 

Explanation: sp2 hybrid structures have trigonal planar geometry, which is two dimensional.

8. Answer: (b) A2B3

Explanation: A  has three electrons in its outermost orbit, it valency = 3

B has six electrons in its outermost orbit, it valency = 2

formula of the compound = A2B3

9. Answer: (d) 4

Explanation: A water molecule can form at the most four H-bonds.

10. Answer: (b) One sigma, two pi

Explanation: A single bond between two atoms is always considered as sigma bond.
A double bond between two atoms is always considered as one sigma and one pi bond
A triple bond between two atoms is always considered as one sigma bond and two pi bonds.
So according to the given structure CaC2 (Calcium carbide) has 1 sigma and 2 pi bonds.

11. Answer: (c) NaCl

Explanation: As we go down in the group, ionic character increases hence, melting point of halides should increase but NaCl has the highest melting point (800C) due to its high lattice energy.

12. Answer: (c) HCl and He atoms

Explanation: HCl is polar (μ ≠ 0) and He is non-polar (μ = 0) gives dipole-induced dipole interaction.

13. Answer: (a) Pentagonal bipyramid

Explanation: The structure is pentagonal bipyramidal having sp3d3 hybridisation as given below:

14. Answer: (d) 5 sigma (s) and 1 pi (p) bonds

Explanation: 

15. Answer: (b) CO2

Explanation: CO2 is a linear molecule because of sp-hybridisaticn around carbon atom.

16. Answer: (a) chemical bond

Explanation: The attractive force that holds various constituents (atoms, ions etc.) together in different chemical species is called chemical bond.

17. Answer: (a) valence electron

Explanation: Atoms achieve the stable octet when they are linked by chemical bonds.
In the formation of a molecule, only the outer shell electrons take part in chemical combination and they are known as valence electrons.

18. Answer: (a) ionic

Explanation: Cation is a positively charged species and anion is a negatively charged species. We know that opposite charges always attract each other and this force of attraction is called the electrostatic force of attraction. It leads to the formation of ionic compounds. An example of an ionic compound is sodium chloride (NaCl).

19. Answer: (a) 3

Explanation: Nconsists of two nitrogen atoms triple bonded to each other and, as with all molecules, the sharing of these 3 pairs of electrons between the two nitrogen atoms allows for the filling of their outer electron shells, making the molecule more stable than the individual nitrogen atoms.

20. Answer: (a) NO

Explanation: For NO, the octet rule is not followed due to the presence of odd electrons on N

21. Answer: (a) Mg and F

Explanation: The ionic bond between Mg and F is most stable because in these the electrostatic force of attraction is maximum.

22. Answer: (b) 1

Explanation: In crystalline form, four water molecules are coordinated with Cu atom forming a square-planar geometry and the two O atoms of sulphate ion complete the distorted octahedron. The fifth water molecule is attached through H-bonding between one of the coordinated H2O molecule and one of the sulphate ion.

23. Answer: (c) BCl3

Explanation: BCl3 is sp2 hydribised and is trigonal planar in shape and hence the bond angle is 120.

24. Answer: (c) Cellulose

Explanation: The chain conformations of cellulose stabilised by two hydrogen bonds parallel to the glycosidic linkage

25. Answer: (a) Hydrogen bonding

Explanation: Inter molecular force in alcohol is mainly H-bonding

Click here to practice MCQ Questions for Chemical Bonding and Molecular Structure class 11

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