CBSE Class 11 Chemistry Chemical Bonding and Molecular Structure MCQs

 

Question: 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

Answer: chemical bond

 

Question: The evolution of various theories of valence and the interpretation of the nature of chemical bonds have closely been related to the developments in the understanding of

  • a) All of the above
  • b) periodic table
  • c) electronic configuration of elements
  • d) structure of atom

Answer: All of the above

 

Question: Who provide explanation of valence based on intertness of noble gases ?

  • a)

  • b) Sidgwick & Powell
  • c) Lewis
  • d) Langmuir

Answer:

 

Question: 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

Answer: valence electron

 

Question: The bond formed as a result of the electrostatic attraction between the positive and negative ions is termed as ...

  • a) Electrovalent bond
  • b) Covalent bond
  • c) Chemical bond
  • d) Co-ordinate bond

Answer: Electrovalent bond

 

Question: Cation and anion combines in a crystal to form following type of compound

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

Answer: ionic

 

Question: Electrovalence of calcium and chlorine respectively is

  • a) + 2, – 1
  • b) 1, – 2
  • c) + 1, – 1
  • d) + 2, – 2

Answer: + 2, – 1

 

Question: When a metal atom combines with non-metal atom, the non-metal atom will

  • a) gain electrons and increase in size
  • b) gain electrons and increase in size
  • c) lose electrons and increase in size
  • d) lose electrons and decrease in size

Answer: gain electrons and increase in size

 

Question: In N2 molecule, the number of electrons shared by each nitrogen atom is

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

Answer: 3

 

Question: The lowest energy structure is the one with the ______ formal charges on the atoms.

  • a) smallest
  • b) highest
  • c) zero
  • d) negative

Answer: smallest

 

More Questions................

 

Question: In the cyanide ion, the formal negative charge is on

  • a) N
  • b) C
  • c) Both C and N
  • d) Resonate between C and N

Answer: N

 

Question: What are the exceptions of the octet rule ?

  • a) All of these
  • b) Expanded octet of the central atom
  • c) An odd number of electrons on central atom
  • d) The incomplete octet of central atom

Answer: All of these

 

Question: In which of the following molecules octet rule is not followed?

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

Answer: NO

 

Question: Among the following the electron deficient compound is

  • a) BCl3
  • b) PCl5
  • c) CCl4
  • d) BeCl2

Answer: BCl3

 

Question: Which of the following is the electron deficient molecule?

  • a) B2H6
  • b) PH3
  • c) SiH4
  • d) None of these

Answer: B2H6

 

Question: Which of the following compounds does not follow the octet rule for electron distribution?

  • a) PCl5
  • b) H2O
  • c) PH3
  • d) PCl3

Answer: PCl5

 

Question: 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

Answer: Mg and F

 

Question: Which of the following methods is used for measuring bond length ?

  • a) All of these
  • b) Spectroscopic techniques
  • c) Electron-diffraction
  • d) X-ray diffraction

Answer: All of these

 

Question: _______ is measured as the radius of an atom’s core which is in contact with the core of an adjacent atom in a bonded situation.

  • a) Covalent radius
  • b) Ionic radius
  • c) Bond length
  • d) van der Waal’s radius

Answer: Covalent radius

 

Question: All the bond lengths of sulphur – oxygen in sulphate ion, are equal because of:

  • a) resonance
  • b) symmetry
  • c) high electronegativity of oxygen
  • d) None of these

Answer: resonance

 

Tags: 

 


Click for more Chemistry Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

The CBSE Science Challenge 2020

The CBSE Science Challenge - 2020 Science is inexplicably linked with our lives and helps us to understand the world around us better. Scientific and technological developments contribute to progress and help improve our standards of living. By engaging with this...

Digital Marks Sheets Migration Certificates and Pass Certificates

CBSE pioneered in providing digital academic documents through its academic repository called “Parinam Manjusha” and DigiLocker.  As on now result data from 2004 till this year is available in the repository.  Approx. 12 crores digital academic documents are available...

Tricks for Utilization of additional time introduced in CBSE Board Exams

Tricks for Proper Utilization of Add-On 15 Minutes introduced in CBSE Board Exams The intend of this article is to share the best suggestions and guidelines to utilize the extra 15 minutes provided for reading the question paper in CBSE Board Examination. These extra...

BRICS International Online Mathematics Competition

BRICSMATH.COM is an annual International Online Competition in Mathematics, for students of classes I – XII of 07 BRICS countries (Brazil, Russia, India, China and South Africa, Indonesia and Vietnam). The competition is held online on the website www.bricsmath.com and...

Celebration of Republic Day by CBSE

As you are aware, Republic Day is celebrated every year on 26th January to honour the Constitution and Republic of our country. Celebration of this occasion annually helps youth and children of our country to be aware of the significance of Indian Constitution, unity...

×
Studies Today