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Essential Chemistry for IGCSE - The Chemical Industry (Section 2)

1
Which of the following is a key element in the production of fertilizers?
Answer
(B)
Nitrogen
2
What is an example of a fertilizer?
Answer
(C)
Ammonium nitrate
3
What is the function of calcium oxide (quicklime)?
Answer
(C)
To make mortar
4
Which of the following is an example of a base?
Answer
(A)
Calcium oxide
5
Which of the following is a common use of sulfuric acid?
Answer
A
B
C
6
Which gas is essential for the manufacture of sulfuric acid via the Contact Process?
Answer
(A)
Oxygen
7
What type of reaction is used to convert SO2 to SO3 in the Contact process?
Answer
(C)
Combination
8
Which of the following is NOT a typical component of a compound fertilizer?
Answer
(D)
Urea
9
What is the chemical reaction that occurs when calcium carbonate (limestone) is heated?
Answer
(B)
CaCO3(s) -> CaO(s) + CO2(g)
10
What is the purpose of using high pressure in the Haber process for the production of ammonia?
Answer
(C)
To shift the equilibrium towards the products.
11
In the Contact process, what is the purpose of absorbing sulfur trioxide (SO3) in concentrated sulfuric acid (H2SO4) and then diluting?
Answer
(B)
To prevent the formation of a corrosive mist.
12
Which process is used to convert sulfur dioxide to sulfur trioxide?
Answer
(C)
Contact process.
13
What type of reaction occurs between limestone and hydrochloric acid?
Answer
(B)
Neutralization
14
What type of reaction occurs when limestone is heated?
Answer
(B)
Decomposition.
15
Which of the following is a starting material for ammonia production in the Haber process?
Answer
(B)
Hydrogen
16
What will happen if water is added to concentrated sulfuric acid?
Answer
(B)
The acid will be diluted and heat will be released.
17
Which of the following is a key factor in the manufacture of sulfuric acid through the Contact process?
Answer
(C)
Use of a catalyst
18
What gas is removed from exhaust fumes by using limestone slurry?
Answer
(B)
Sulfur dioxide
19
Which of the following is used to make cement?
Answer
(B)
Clay and Limestone
20
What are the conditions used in the Haber Process?
Answer
B
C
D
21
Which of the following statements describes the effect of a catalyst on a chemical reaction?
Answer
(C)
It increases the rate of reaction by providing an alternative reaction pathway
22
What is the purpose of the reaction between sulfur trioxide and water?
Answer
(B)
To produce sulfuric acid.
23
Which substance is used as a catalyst in the Contact process?
Answer
(C)
Vanadium(V) oxide
24
In the Contact process, what is the purpose of the sulfur dioxide converter?
Answer
(B)
To convert sulfur dioxide to sulfur trioxide.
25
In the Haber process, what is the role of the high pressure applied?
Answer
(B)
To shift the equilibrium towards the products.
26
Which of the following materials is a major source of nitrogen in the Haber process?
Answer
(B)
Air
27
What is the name of the process used to manufacture ammonia?
Answer
(B)
Haber Process
28
What is the role of a catalyst?
Answer
(B)
To lower the activation energy of a reaction
29
What does the thermal decomposition of limestone produce?
Answer
(C)
Lime and carbon dioxide.
30
Which of the following is a reactant used in the manufacture of ammonium sulfate fertilizer?
Answer
(B)
Ammonia and Sulfuric acid
31
What is the catalyst used in the Contact process?
Answer
(B)
Vanadium(V) oxide
32
What is the role of nitrogen in fertilizer?
Answer
(B)
Promotes leaf growth
33
What is a major use of limestone?
Answer
(C)
Producing cement
34
What is the role of a catalyst in a chemical reaction?
Answer
(C)
To speed up the rate of reaction.
35
What is formed during the reaction between ammonia and sulfuric acid?
Answer
(B)
Ammonium sulfate.
36
What is the chemical formula for calcium carbonate?
Answer
(A)
CaCO3
37
Which of the following is essential for plant growth?
Answer
(D)
Nitrogen
38
Which gas reacts with water to produce acid rain?
Answer
(C)
Sulfur dioxide
39
Which of the following gases is used as a feedstock in making ammonia?
Answer
(B)
Nitrogen
40
Which gas is primarily responsible for acid rain?
Answer
(C)
Sulfur dioxide (SO2)
41
What is the meaning of 'reversible reaction' in the context of chemical industry?
Answer
(A)
The reaction can proceed in both directions.
42
Where is sulfur mainly found?
Answer
(C)
Under the ground.
43
In the Contact process, what is absorbed by 98% sulfuric acid to convert sulfur trioxide to sulfuric acid?
Answer
(A)
Water
44
What is the function of the Frasch process?
Answer
(A)
To extract sulfur from underground.
45
What is the primary gas formed when limestone is decomposed?
Answer
(B)
Carbon dioxide
46
What is the main environmental concern related to the use of fertilizers?
Answer
(B)
Eutrophication of waterways.
47
Which of the following statements is correct about the Haber process?
Answer
B
D
48
Why is nitrogen often added to the soil?
Answer
(C)
To improve the growth of the plants.
49
What type of chemical reaction does limestone undergo when heated?
Answer
(B)
Decomposition
50
Which of the following is a key component of many fertilizers?
Answer
(B)
Nitrogen