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Essential Chemistry for IGCSE - The Chemical Industry (Section 5)

1
What is the catalyst used in the Contact process?
Answer
(C)
Vanadium(V) oxide
2
Which of these substances are reactants in the Contact process for sulfuric acid production?
Answer
A
B
3
What is the chemical formula of limestone?
Answer
(B)
CaCO3
4
Which reactants are used in the formation of sulfuric acid?
Answer
A
B
C
5
What is the common name for calcium oxide?
Answer
(C)
Quicklime
6
Which of the following compounds is NOT typically found in fertilizers?
Answer
(D)
Sodium sulfate
7
What is the name of the compound that is also known as 'quicklime'?
Answer
(B)
Calcium oxide
8
What gas is used in the first step of the contact process?
Answer
(D)
Sulfur
9
What is the key step in the Contact process?
Answer
A
B
C
10
In the Contact process, what are the products of reacting sulfur dioxide with oxygen in the presence of a catalyst?
Answer
(B)
Sulfur trioxide
11
Which gas is required in the first step of making sulfuric acid (H2SO4) via the Contact process?
Answer
(B)
Oxygen
12
Which factors can affect the yield of ammonia in the Haber process?
Answer
A
B
13
Which gas is released when limestone undergoes thermal decomposition?
Answer
(B)
Carbon dioxide
14
Which of the following elements is NOT a major component of most fertilizers?
Answer
(D)
Carbon
15
Which gas is essential for the Haber process to make ammonia?
Answer
(C)
Hydrogen
16
What are the reactants in the Haber process?
Answer
(B)
Nitrogen and hydrogen
17
What is the first step in sulfuric acid production using the Contact process?
Answer
(A)
Burning sulfur in air
18
What is the name of the process that is used to decompose calcium carbonate?
Answer
(B)
Decomposition
19
What are the main elements that plants need for healthy growth?
Answer
(A)
Nitrogen, phosphorus, and potassium
20
What is the reaction that occurs when sulfur is burned in the air?
Answer
(A)
S + O2 -> SO2
21
What is the correct chemical formula of Calcium oxide?
Answer
(B)
CaO
22
Which of the following is a key step in the Contact process?
Answer
(D)
All of the above
23
What are the products of the reaction of calcium oxide with water?
Answer
(B)
Calcium hydroxide
24
Which of the following is a raw material for ammonia production?
Answer
(D)
All of the above
25
Which element is NOT typically used in fertilisers?
Answer
(D)
Calcium
26
What is the main role of the chemical industry in the production of food?
Answer
(C)
To produce fertilizers and pesticides.
27
What is the major gas produced by the thermal decomposition of calcium carbonate?
Answer
(B)
Carbon dioxide
28
What are the primary products of burning sulfur in air?
Answer
(A)
Sulfur dioxide
29
What are the products of the thermal decomposition of calcium carbonate (limestone)?
Answer
B
C
30
Which method is used in the industry to manufacture sulfuric acid?
Answer
(B)
Contact process
31
What is the main purpose of the thermal decomposition of limestone?
Answer
A
B
32
What process is used to make limestone?
Answer
(D)
None of the above
33
Which of the following conditions are used to make ammonia efficiently in the Haber process?
Answer
B
C
34
What is one of the main ways in which the chemical industry contributes to agriculture?
Answer
(B)
By manufacturing fertilisers.
35
What is the function of concentrated sulfuric acid in the Contact process?
Answer
(B)
To absorb sulfur trioxide
36
Which of the following is NOT a source of hydrogen used in the Haber process?
Answer
(D)
Limestone
37
What are the main reactants for the production of ammonia?
Answer
A
B
38
What are the main reactants used in the Haber process?
Answer
(C)
Nitrogen and hydrogen
39
What is the main role of the chemical industry in food production?
Answer
B
C
40
Which of the following compounds is a main component of some fertilisers?
Answer
(B)
Ammonium phosphate
41
In the Contact process, sulfur trioxide is dissolved in which substance?
Answer
(B)
Concentrated sulfuric acid
42
Which of the following are involved in the contact process?
Answer
A
B
C
D
43
What substance is commonly known as quicklime?
Answer
(B)
Calcium oxide
44
What type of reaction is the Haber process?
Answer
(A)
Exothermic
45
What is the main source of sulfur used in the Contact process?
Answer
(C)
Underground deposits
46
What type of furnace is used in the Contact Process?
Answer
(C)
A continuous furnace
47
What is the chemical formula for calcium carbonate?
Answer
(B)
CaCO3
48
What is the effect of the catalyst on the rate of the reaction in the Haber process?
Answer
(C)
It increases the reaction rate.
49
What are the conditions used to produce ammonia via the Haber process?
Answer
A
D
50
What is the catalyst used in the contact process?
Answer
(C)
Vanadium(V) oxide