Chemistry online test series with fully solved practice questions (MCQ) helpful for preparing IITJEE, NEET, Engineering and Medical Entrance Exams, Dental, MBBS Admission Tests, Joint Entrance Exams, NEST and other competitions.
Chemistry Test Series (MCQ Practice Questions)
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 Test Series: Chemical Bonding and Molecular Structure
MCQ Test Series – Set 1 (Q. No. 1-10)
Question 1: Tendency of I-, Br-, Cl- and F- to be oxidised is in order:
a. I- > Br- > Cl- > F-
b. I- < Br- < Cl- < F-
c. I- < Cl- > F- > Br-
d. I- = Br- > Cl- = F-
Question 2: Some statements about valence bond theory are given below –
a. The strength of bond depends upon extent of overlapping
b. The theory explains the directional nature of covalent bond
c. According to this theory oxygen molecule is paramagnetic in nature
(1) All are correct (2) Only a and c (3) Only a and b are correct (4) All are wrong
Question 3: Which has maximum covalent character?
a. NaCl
b. SiCl4
c. AlCl3
d. MgCl2
Question 4: The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is –
a. 2
b. 3
c. 4
d. 1
Question 5: The correct order regarding the electronegativity of hybrid orbitals of carbon is –
a. sp < sp2 < sp3
b. sp > sp2 < sp3
c. sp > sp2 > sp3
d. sp < sp2 > sp3
Question 6: The electronegativity of O, F, N, Cl and H are 3.5, 4.0, 3.2, 3.0 and 2.1 respectively. The strongest bond will be:
a. F-O
b. O-Cl
c. N-H
d. O-H
Question 7: When two atoms of chlorine combine to form one molecule of chlorine gas, the energy of the molecule is –
a. Greater than that of separate atoms
b. Equal to that of separate atoms
c. Lower than that of separate atoms
d. None of these
Question 8: Which of the following species is not correctly matched with its geometry according to the VSEPR theory?
a. BrF6+ → octahedral
b. SnCl5- → trigonal bipyramidal
c. ClF2- → linear
d. IF4+ → T-shape
Question 9: Variable valency is shown by:
a. s-block elements
b. d-block elements
c. p- and d-block elements
d. all elements
Question 10: Covalent compounds are generally soluble in –
a. Polar solvents
b. Non-polar solvents
c. Concentrated acids
d. All solvents
Chemical Bonding and Molecular Structure - More Objective Questions with Answers
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