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Sulphur

Total questions: 30

Worksheet time: 20mins

Name
Class
Date
1.

In the contact process, what are the raw materials needed for the production of sulfuric acid?

a)

Water, air, sulfur

b)

Ammonia, water, oxygen

c)

Crude oil, air

2.

Which one of the three stages of the contact process is reversible?

a)

The burning of sulfur in oxygen to form sulfur dioxide

b)

The reaction of sulfur dioxide with oxygen to form sulfur trioxide

c)

The reaction of sulfur trioxide with water to form sulfuric acid

3.

What is the name of the catalyst used in the contact process?

a)

Iron

b)

Nickel

c)

Vanadium(V) oxide

4.

The sulfur trioxide needs to be absorbed in concentrated sulfuric acid, rather than added direct into water. Why?

a)

The addition to water will slow down the reaction

b)

The addition to water will be highly exothermic

c)

The addition to water will speed up the reaction

5.

Which of the following is the correct symbol equation for the production of sulfur trioxide in the second stage of the contact process?

a)

2SO2(g) + O2(g) ⇌ 2SO3(g)

b)

2SO2(g) + O2(g) → 2SO3(g)

c)

2S(s) + 3O2(g) → 2SO3(g)

6.

Sulfuric acid acts as a dehydrating agent. What does this mean?

a)

It removes oxygen from a substance

b)

It removes water from a substance

c)

It removes carbon dioxide from a substance

7.

When concentrated sulfuric acid is added to glucose, a black solid is formed over time. What is the name of the black solid?

a)

Copper(II) oxide

b)

Coal

c)

Carbon

8.

What is the exact temperature used for contact process

a)

4300C

b)

4500C

c)

5000C

d)

3000C

9.

Sulfur is a common starting material for the Contact process.Name a source of sulfur.

a)

fossil fuels

b)

geysers

c)

volcanoes

d)

artificial creation

10.

one of the metal​ ​ores that are the source of sulphur...

a)

Copper​ ​pyrites​ ​(CuFeS​2)​ ​

b)

Bauxite (Al2O32H2O)

c)

Chile saltpeter (NaNO3)

d)

Cryolite (Na3AlF6)

11.

Uses​ ​of​ ​sulfuric​ ​acid (select 2)

a)

In​ ​petroleum​ ​refining​ ​to​ ​wash​ ​impurities​ ​out​ ​of​ ​gasoline​ ​and​ ​other refinery​ ​products

b)

used in mass production of automotive products

c)

production of cast iron

d)

Production​ ​of​ ​fertilisers

12.

Which are the properties of Sulfuric​ ​acid​ (select 2)

a)

dark in colour

b)

good​ ​electrolyte

c)

weak electricity conductor

d)

corrosive​

13.

Acid rain is formed when sulfur dioxide and oxides of nitrogen dissolve in rain water. Which problem is not caused by acid rain?

a)

breathing difficulties

b)

dying trees

c)

erosion of statues

d)

lowered pH of lakes

14.

Statement 1: The burning of fossil fuels containing sulfur is a cause of ‘acid rain’.


Statement 2: Acid rain contains sulfur dioxide which is formed when sulfur compounds burn in the air.


Which of the following is true?

a)

Statement 1 is correct but statement 2 is incorrect.

b)

Both statements are correct, but statement 2 does not explain statement 1.

c)

Both statements are correct and statement 2 explains statement 1.

d)

Statement 2 is correct but statement 1 is incorrect.

15.

​The​ ​uses​ ​of​ ​sulfur​ ​dioxide... (select 2)

a)

rust prevention agent

b)

A​ ​bleach​ ​in​ ​the​ ​manufacture​ ​of​ ​wood​ ​pulp​ ​for​ ​paper

c)

A​ ​food​ ​preservative​ ​(by​ ​killing​ ​bacteria)

d)

Used in mass production of plastic

16.

What is the main use of sulfur?

a)

Vulcanising rubber

b)

Consuming

c)

Manufacture sulfuric acid

d)

Sterilising agent

17.

When is Sulfur dioxide formed?

a)

When it is boiled

b)

When you consume it

c)

When it is frozen

d)

When it burns in Air

18.

What is oleum?

a)

A part of petroleum

b)

An oil based compound

c)

A precursor of sulphuric acid

d)

Dilute sulphuric acid

19.

Add dilute sulphuric acid slowly to a small amount of copper oxide in a watch glass with stirring. What do you observe in the above reaction?

a)

Copper oxide present in the watch glass dissolves in dilute H2SO4 and the colour of the solution becomes blue.

b)

Copper oxide present in the watch glass insoluble in dilute H2SO4 and the colour becomes black.

c)

Copper oxide present in the watch glass dissolves in dilute H2SO4 and the colour of the solution becomes crimson red.

d)

Copper oxide present in the watch glass dissolves in dilute H2SO4 and the colour of the solution becomes yellow.

20.

Which of the following are CHEMICAL properties of acids?

a)

Reacts with metals to form salt and hydrogen gas

b)

Reacts with metal carbonates to form salt, water and carbon dioxide gas.

c)

Reacts with bases to form salt and water only

d)

Tastes sour

21.

Properties of acid

a)

pH less than 7

b)

Corrosive

c)

Tastes bitter

d)

Turns blue litmus paper to red

22.

Acid reacts with metal to produce ___________ gas.

a)

oxygen

b)

hydrogen

c)

carbon dioxide

d)

nitrogen

23.

What are the uses of sulfuric acid? Choose the correct answers.

a)

In the manufacture of detergents and fertilisers

b)

As a battery acid

c)

As food preservative

d)

As a bleach

24.

What are the conditions used in the Contact process?

a)

1 atm1\ atm and 450 °C450\ \degree C

b)

200 atm200\ atm and 450 °C450\ \degree C

c)

450 atm450\ atm and 1 °C1\ \degree C

d)

450 atm450\ atm and 200 °C200\ \degree C

25.

What is H2S2O7?

a)

Concentrated sulfuric acid

b)

Sulfur trioxide

c)

Oleum

d)

Hydrogen sulfate

26.

Why is sulfur trioxide not dissolved directly in water?

a)

There would be no reaction

b)

Sulfur trioxide is insoluble in water

c)

Sulfur trioxide reacts violently with water to produce fog of H2SO4

d)

Sulfur trioxide needs to be dry

27.
Describe the appearance of elemental sulfur
a)
a yellow gas
b)
a yellow powder
c)
a green liquid
d)
a blue solid
28.
Name SO2
a)
monosulfur dioxide
b)
sulfur dioxide
c)
sulfur oxide
d)

sulfur (II) oxide

29.

Sulfuric acid is a

a)

weak acid

b)

strong acid

30.

What are the products formed when H2SO4 reacts with sugar(sucrose) ?

(a)