MDCAT Chemistry Chapter 4 MCQ Test With Answer for Chemistry chapter 4 (Chemical Bonding)
After the FSc, the MDCAT is conducted for students that want to join the medical field.
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a) Characterize electrovalent (ionic) bond as in sodium chloride and calcium oxide.
b) Use the ‘dot-and-cross’ diagrams to explain: i) Covalent bonding, as in hydrogen(H2); oxygen(O2); chlorine(Cl2); hydrogen chloride; carbon dioxide; methane and ethane. ii) Co-ordinate (dative covalent) bonding, as in the formation of the ammonium ion in H3N+– -BF3 and H3O+.
c) Describe the shapes and bond angles in molecules by using the qualitative model of Valence Shell Electron-Pair Repulsion (VSEPR) theory up to 4 pairs of electron including bonded electron pair and lone pair around central atom. d) Describe covalent bonding in terms of orbital overlap, giving and bonds.
e) Explain the shape of and bond angles in ethane, ethene and benzene molecules in terms of and bonds.
f) Describe hydrogen bonding, using ammonia and water as simple examples of molecules containing N-H and O-H groups.
g) Explain the terms bond energy, bond length and bond polarity (electronegativity difference) and use them to compare the nature of covalent bonds i.e. polar and non-polar.
h) Describe intermolecular forces (Van der Waal’s forces), based on permanent and induced dipoles, as in HCl, CHCl3, Halogens and in liquid noble gases.
i) Describe metallic bonding in terms of positive ions surrounded by mobile electrons (sea of electrons).
j) Describe, interpret and/or predict the effect of different types of bonding (ionic bonding; covalent bonding; hydrogen bonding; Van der Waal’s forces and metallic bonding) on the physical properties of substances.
k) Deduce the type of bonding present in a substance from the given information
MCQ's Test For MDCAT Chemistry Chapter 4 Liquids Online Test
Try The MCQ's Test For MDCAT Chemistry Chapter 4 Liquids Online Test
Vapour pressure of a substance does not depend upon:
Question # 2
The nature of the attractive force in acetone and chloroform are
Question # 3
Strong dipole-dipole forces among the liquid molecules are responsible for
Question # 4
The boiling point of H2O is 100°C while that of C2H5-OH is 78.5C°. The reason is that:
Question # 5
The boiling points of the halogens
Question # 6
Hydrogen bonding is not present in which of following compound?
Question # 7
The boiling of water may be 120°C, when the external pressure is
Question # 8
The B.P. of compound is mostly raised by
Question # 9
H2O and HF are the hydrides of the second period. Fluorine is more electronegative than oxygen. Anyhow, the boiling point of water is greater than that of HF. This is due to:
Question # 10
The vapour pressure of a liquid depends upon
Question # 11
Liquid hydrocarbon is
Question # 12
In order to maintain the boiling point of water at 110 C°, the extemal pressure should be
Question # 13
Dipole-dipole interaction are present in the
Question # 14
The forces which are present between the ions and the water molecules are known as
Question # 15
The B.P of glycerine at 760 torr pressure is
Question # 16
Dipole-induced dipole forces are also called
Question # 17
Polarizability is responsible for intermolecular forces and it
Question # 18
The weakest intermolecular forces present in a liquid may be
Question # 19
The nature of crystals formed due to London forces of interaction are
Question # 20
Which of following factor affect vapour pressure of a liquid?
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