Chemical Bonding and Molecular Structure - Online solved Chemistry Test Series, Questions Answers for IITJEE, NEET, Entrance Exams

 


Chemistry online solved objective test series (MCQ) with hints helpful for preparing IITJEE, NEET, Engineering and Medical Entrance Exams, Dental, MBBS Admission Tests, Joint Entrance Exams, NEST and other competitions.

Practice Questions Answers (Objective Questions with Solutions)

Chemical Bonding and Molecular Structure
Syllabus :
Chemical combination; Kossel-Lewis Approach to Chemical Bonding; Lattice Energy; Covalent Bond; Octet Rule; Ionic and electrovalent Bond; Electrovalency; Covalency; Writing formula of an ionic compound; Coordinate Bond; Metallic Bond; Bond parameters - bond length, bond angle, bond enthalpy, bond order, resonance structures, polarity of bonds; The Valence Shell Electron Pair Repulsion (VSEPR) Theory; Valence Bond Theory; Geometry of molecules; Hybridisation; Molecular Orbital Theory; Bonding in some Homonuclear Diatomic Molecules; Hydrogen Bonding

Chemistry Solved Test Series: Chemical Bonding and Molecular Structure

MCQ Test Series – Set 3 (Q No.21-30)
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Question 21: The molecule that deviates from octet rule is –
a. CCl4
b. BF3
c. MgO
d. NCl3

Question 22: The sigma and π-bonds present in benzene ring are:
a. Three sigma and three pi
b. Six sigma and three pi
c. Six pi and three sigma
d. Nine sigma and three pi

Question 23: NH3 and BF3 combine readily because of the formation of:
a. A covalent bond
b. A hydrogen bond
c. A coordinate bond
d. An ionic bond

Question 24: Which of the following bonds has the highest energy?
a. S-S
b. O-O
c. Se-Se
d. Te-Te

Question 25: Which is not true for resonance?
a. Identical bonding
b. Identical arrangement of atoms
c. Same number of paired electrons
d. Structure with nearly same energies

Question 26: Which of the following contains both electrovalent and covalent bonds?
a. MgCl2
b. H2O
c. NH4Cl
d. None

Question 27: Which is a covalent compound?
a. RbF
b. MgCl2
c. CaC2
d. NH3

Question 28: Which one of the following species is planar and non-planar with two lone pairs of electrons on the central atom?
a. ClF3
b. XeF5-
c. PCl5
d. BeF5

Question 29: Hybridisation of carbon in CO is –
a. sp3
b. dsp2
c. sp
d. sp2

Question 30: The high boiling point of water is due to:
a. Its high specific heat
b. Hydrogen bonding between the molecules
c. Weak dissociation of water molecules
d. Its high dielectric constant

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