NCERT MCQ CLASS-11 CHAPTER-4 | CHEMISTRY NCERT MCQ | | CHEMISTRY PART 1 | | CHEMICAL BONDING AND MOLECULAR STRUCTURE | EDUGROWN

In This Post we are  providing Chapter -4 Chemical bonding and Molecular Structure NCERT MCQ for Class 11 Chemistry which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON CHEMICAL BONDING AND MOLECULAR STRUCTURE

Question 1: 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 2: Electrovalence of calcium and chlorine respectively is

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

Answer: + 2, – 1

Question 3: 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 4: 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 5: The lowest energy structure is the one with the ______ formal charges on the atoms.

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

Answer: smallest

Question 6: 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 7: 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 8: In which of the following molecules octet rule is not followed?

• a) NO
• b) CH₄
• c) NH₃
• d) CO₂

Answer: NO

Question 9: Among the following the electron deficient compound is

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

Answer: BCl₃

Question 10: Which of the following is the electron deficient molecule?

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

Answer: B₂H₆

Question 11: 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 12: 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 13: 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 14: _______ 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 15: 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