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

00:00
Question # 1

A crystal system in which all three angles and all three edges are different is called

Question # 2

The structure of sodium chloride is

Question # 3

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

Question # 4

The crystals formed due to London forces of interaction are

Question # 5

in diamond a unit cell is tetrahedral and averall crystai structure is

Question # 6

The geometry of diamonds is

Question # 7

Substance that does not show the process of sublimation is

Question # 8

NaCI has face centered cubic structure. The Na ion at the face of the unit cell is shared by

Question # 9

Plastics are amorphous solids and

Question # 10

The crystal of diamond is

Question # 11

Amorphous means

Question # 12

Polymorphism is shown by AgNO3. Which one of the following options is true for AgNO3?

Question # 13

The hexagonal closed packing is associated with

Question # 14

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

Question # 15

The examples of a hexagonal system is

Question # 16

Which impurity makes the shape of NaCl crystal needle like

Question # 17

What is the co-ordination number of face centered cubic structure?

Question # 18

Hardness of diamond is attributed to the

Question # 19

The transition temperature of KNO3, is

Question # 20

K2SO4, and K2Cr2O4, are isomorphous solids and exist in

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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 In diamond, which hybridization is there?
A. sp2
B. dsp2
C. sp3
D. sp
2 Crystals can be classified into
A. 7 crystal systems
B. 4 crystal systems
C. 3 crystal systems
D. 14 crystal systems
3 The crystal of diamond is
A. ionic
B. molecular
C. covalent
D. metallic
4 Which impurity makes the shape of NaCl crystal needle like
A. MgSO4
B. urea
C. glucose
D. MgCO3
5 Amorphous means
A. arranged
B. ordered
C. shaped
D. shapeles (no arrangements)
6 The electrical conductivity of the metals decreases with the increasing temperature. This is because
A. the number of free electrons decrease
B. the bonds of the metal atoms become weak
C. the to and fro motion of the metal ions decrease
D. the increase of to and fro motion of the metal ions hinders the free movement of electrons
7 The Cl- ion present at the corner of the unit cell is NaCl crystal, contributes
A. 1/8 th
B. 1/4 th
C. 1/2 th
D. 1
8 The transition temperature of KNO3, is
A. 13.2°C
B. 95.5°C
C. 128°C
D. 32.02°C
9 The geometry of diamonds is
A. tetragonal
B. cubic
C. rhombohedral
D. none of these
10 The examples of a hexagonal system is
A. sugar
B. graphite(a=b not equal to c) {Alpha =beta. not equal to gamma}
C. sulphur
D. diamond

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