MDCAT Chemistry Chapter 5 MCQ Test With Answer for (Chemical Energetics)

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MCQ's Test For MDCAT Chemistry Chapter 5 Chemical Energenitcs Online Test

Try The MCQ's Test For MDCAT Chemistry Chapter 5 Chemical Energenitcs Online Test

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MDCAT Chemistry Chapter 5 Chemical Energenitcs Online Test

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Question # 1

Hardness of diamond is attributed to the

Question # 2

An element from the given below exists as discrete small molecules in the solid state. Which is that?

Question # 3

Which impurity makes the shape of NaCl crystal needle like

Question # 4

The arrangement ABC, ABC .... is referred as

Question # 5

Which one is an isomorphic pair?

Question # 6

Crystals can be classified into

Question # 7

Structure of CrO4(-2) is'

Question # 8

In crystal of sodium chloride, a Cl-1 ion present at the corner of cube is shared between how many cubes?

Question # 9

Which among the following will show anisotropy?

Question # 10

The examples of a hexagonal system is

Question # 11

How many allotropic forms are present in carbon?

Question # 12

Some of crystals are good conductors of heat and electricity, they may be

Question # 13

Amorphous means

Question # 14

The existence of an element in more than one form is called

Question # 15

The Cl- ion present at the corner of the unit cell is NaCl crystal, contributes

Question # 16

Which of the following solids does not have a covalent bond?

Question # 17

K2SO4, and K2Cr2O4, are isomorphous solids and exist in

Question # 18

The nature of crystal of diamond is

Question # 19

The most unsymmetrical one in crystal system is

Question # 20

Metallic bonds have been explained by many theories. Luis Pauling has proposed a theory called

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In this topic,Student should be able to:

a) Understand concept of energy changes during chemical reactions with examples of exothermic and endothermic reactions.

b) Explain and use the terms:

i) Enthalpy change of reaction and standard conditions, with particular reference to: formation; combustion; solution; neutralization and atomization.
ii) Bond energy (ΔH positive, i.e. bond breaking).
iii) Lattice energy (ΔH negative, i.e. gaseous ions to solid lattice).

c) Find heat of reactions/neutralization from experimental results using mathematical relationship i.e. ∆H=mc∆T

d) Explain, in qualitative terms, the effect of ionic charge and of ionic radius on the numerical magnitude of lattice energy

e) Apply Hess’s Law to construct simple energy cycles, and carry out calculations involving such cycles and relevant energy terms, with particular reference to:

i) Determining enthalpy changes that cannot be found by direct experiment, e.g. an enthalpy change of formation from enthalpy change of combustion.
ii) Born-Haber cycle of NaCl (including ionization energy and electron affinity).

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MCAT Chemistry Chapter 5 Important MCQ's

Sr.# Question Answer
1 The number of Na+, ions which surround each Cl- ion in the NaCl crystal lattice is
A. 8
B. 12
C. 6
D. 10
2 The existence of an element in more than one form is called
A. allotropy
B. isomorphism
C. polymorphism
D. isotropy
3 Which one is an isomorphic pair?
A. NaNO3, CaCO3,
B. NaF, MgO
C. K2SO4 ,K2Cr2O7
D. Zn, Cd
4 The transition temperature of tin is
A. 95.5 C°
B. 13.2 C°
C. 13.2°C
D. 128.5°
5 In crystal of sodium chloride, a Cl-1 ion present at the corner of cube is shared between how many cubes?
A. 8
B. 4
C. 6
D. 10
6 The structure of sodium chloride is
A. simple cube
B. body centered cubic
C. face centered cubic
D. depends upon conditions
7 The most unsymmetrical one in crystal system is
A. triclinic
B. Li, Na, K
C. monoclinic
D. hexagonal
8 Plastics are amorphous solids and
A. have sharp melting points
B. undergo clean cleavage when cut with knife
C. do not undergo clean cleavage
D. possess orderly arrangement over long distances
9 In most of the cases the molecular crystals are
A. very soft
B. soft
C. extremely hard
D. sufficiently hard
10 Which impurity makes the shape of NaCl crystal needle like
A. MgSO4
B. urea
C. glucose
D. MgCO3

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