MDCAT Chemistry Chapter 7 MCQ Test With Answer (Chemical Equilibrium)

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MCQ's Test For MDCAT Chemistry Chapter 7 Chemical Equilibrium Online Test

Try The MCQ's Test For MDCAT Chemistry Chapter 7 Chemical Equilibrium Online Test

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MDCAT Chemistry Chapter 7 Chemical Equilibrium Online Test

00:00
Question # 1

If internal energy of the system is increased

Question # 2

NaOH+HCI- NaCI+ H2O. Enthalpy change in the above reaction is called

Question # 3

The enthalpy change for the reaction C2H2 + 5/2 O2 --------> 2CO2 + H2O is known as enthalpy of

Question # 4

The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps.it is known as

Question # 5

The enthalpy change AH of a process is given by the relation

Question # 6

How much heat is absorbed by 100 g of water when its temperature decreases from 25°C to 5°C? (heat capacity is 4.2 J/gK)

Question # 7

Which of the following has positive value of enthalpy

Question # 8

Enthalpy of formation of one mole of ionic compound form gaseous ion under standard condition is called

Question # 9

The values of ∆H for the process l(g)+e-1--------->
I-1(g) is:

Question # 10

What is correct about heat of combustion

Question # 11

The exothermic process is

Question # 12

Total heat content of a system is called

Question # 13

Choose from the followings the correct statement about Born Haber cycle

Question # 14

Whenever a reaction is endothermic, then it means that

Question # 15

Enthalpy of a reaction can be measured by

Question # 16

The change in enthalpy of a system when one mole of the substance is completely burnt in excess of air or oxygen is called

Question # 17

The enthalpy of formation of a compound is

Question # 18

By convention, the standard heat of formation of all elements is assumed to be

Question # 19

Enthalpy of a system can be calculated by which of following relationship

Question # 20

A system absorbs 100 kJ heat and performs 50 kJ work on the surroundings. The increase in internal energy of the system is

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In this topic,Student should be able to :

a) Describe and explain redox processes in terms of electron transfer and/or of changes in oxidation number.

b) Define the terms: Standard electrode (redox) potential and Standard cell potential.

c) Describe the standard hydrogen electrode as reference electrode.

d) Describe methods used to measure the standard electrode potentials of metals or non-metals in contact with their ions in aqueous solution

e) Calculate a standard cell potential by combining two standard electrode potentials.

f) Use standard cell potentials to: i) Explain/deduce the direction of electron flow in the external circuit. ii) Predict the feasibility of a reaction.

g) Construct redox equations using the relevant half-equations.

h) State the possible advantages of developing the H2/O2 fuel cell

i) Predict and to identify the substance liberated during electrolysis from the state of electrolyte (molten or aqueous), position in the redox series (electrode potential) and concentration e.g. H2SO4(aq) and Na2SO4(aq).

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MCAT Chemistry Chapter 7 Important MCQ's

Sr.# Question Answer
1 ∆H=∆E is true for which of the following reaction
A. K+H2O----->KOH+H2
B. N2+3H2------>2NH3
C. AlCl3+3NaOH--->Al(OH)3+3 NaCl
D. 4Na + O2----->2Na2O
2 Enthalpy of a reaction can be measured by
A. Glass calorimeter
B. Barometer
C. Manometer
D. Thermometer
3 The change in enthalpy of a system when one mole of the substance is completely burnt in excess of air or oxygen is called
A. Heat of reaction
B. Heat of formation
C. Heat of atomization
D. Heat of combustion
4 Decomposition of H2O is
A. Endothermic reaction
B. Nuclear reaction
C. Exothermic reaction
D. Zero nuclear reaction
5 The enthalpy change AH of a process is given by the relation
A. ΔΗ =ΔΕ + P∆V
B. ΔH=ΔE +W
C. ΔH =ΔΕ-ΔnRT
D. ΔΕ =ΔΗ + P∆V
6 Hess's law is analogous to
A. Law of heat summation
B. law of increasing entropy
C. Law of heat exchange
D. Ist law of thermodynamics
7 Enthalpy of a system can be calculated by which of following relationship
A. q=ΔΕ
B. q=m×S×∆T
C. q=pv
D. q=m×v×∆T
8 The enthalpy change for the reaction C2H2 + 5/2 O2 --------> 2CO2 + H2O is known as enthalpy of
A. Fomation of CO2
B. Fusion ofC2H4
C. Combustion of C2H4
D. Vaporization of C2H2
9 ΔH° represent the enthalpy change at
A. 0°C and 1 atm pressure
B. 25°Cand 1atm
C. 0K and I atm pressure
D. 25°C and 2 atm pressure
10 A system absorbs 100 kJ heat and performs 50 kJ work on the surroundings. The increase in internal energy of the system is
A. 50kJ
B. 100 kJ
C. 150kJ
D. 5000 kJ

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