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Question-1
The bond enthalpy value is always:
(A)
Zero
(B)
Negative
(C)
Positive
(D)
Either positive or negative
Question-2
The total enthalpy change for a chemical reaction takes place, provided the initial and final conditions are the same. The law is:
(A)
I
st
law of thermodynamics
(B)
Gay Lussac's Law
(C)
Law of multiple proportion
(D)
Hess's law
Question-3
Reactions in which heat energy is released is called:
(A)
Exothermic
(B)
Endothermic
(C)
Thermometric reaction
(D)
Emission
Question-4
An endothermic enthalpy change always have a value:
(A)
Negative
(B)
Zero
(C)
Either positive or negative
(D)
Positive
Question-5
First law of thermodynamics deals with transfer of:
(A)
Man
(B)
Heat
(C)
Energy
(D)
Particles
Question-6
The spectator ions among the following.
(A)
H+
(B)
OH-
(C)
Na+
(D)
COOH
-
Question-7
Quick lime is:
(A)
Calcium sulphate
(B)
Calcium hydroxide
(C)
Calcium oxide
(D)
Calcium carbonate
Question-8
Reactions in which heat energy is absorbed is called:
(A)
Exothermic
(B)
Thermometric
(C)
Photometric
(D)
Endothermic
Question-9
An exothermic enthalpy always have a value:
(A)
Negative
(B)
Positive
(C)
Zero
(D)
Either negative or positive
Question-10
The energy required to decompose limestone.
(A)
+ 572 KJ mol
-1
(B)
- 890.3 KJ mol
-1
(C)
- 588 KJ mol
-1
(D)
-833 KJ mol
-1
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
Planet Earth
Atomic Structure
Group VII Elements and their Compounds
Halogenoalkanes
Basic Concepts in Organic Chemistry
Alcohols
Hydrocarbons: Alkenes
Hydrocarbons: Fuels
Reaction Rates
Enthalpy Changes
Equilibria
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