Quiz about Combustion Reactions

Question 1

What is essential for a combustion reaction to begin?

Accepted Answer

Fuel, oxygen and heat

Answer

Carbon dioxide

Answer

Fuel

Answer

Water and oxygen

Question 2

Another term for burning is

Accepted Answer

Combustion

Answer

Fire triangle

Answer

Magnesium oxide

Answer

Bustion

Question 3

What are the products of combustion?

Accepted Answer

Carbon dioxide + water

Answer

Hydrogen + oxygen

Answer

Carbon dioxide + hydrogen

Answer

Carbon + water

Question 4

Combustion is when a __________ reacts with oxygen

Accepted Answer

fuel

Answer

petrol

Answer

fire triangle

Answer

carbon dioxide

Question 5

What is a combustion reaction?

Accepted Answer

A reaction where a substance combines with oxygen, releasing energy in the form of light or heat.

Answer

A reaction where a compound breaks down into two or more simpler substances.

Answer

A reaction where two or more substances combine to form a new compound.

Answer

A reaction that involves the exchange of ions between two compounds.

Question 6

What is the primary characteristic of a combustion reaction?

Accepted Answer

Release of heat and light

Answer

Formation of a precipitate

Answer

Absorption of heat

Answer

Formation of a gas

Question 7

Which of the following is a combustion reaction?

Accepted Answer

C₃H₈ + 5O₂ > 4H₂O + 3CO₂

Answer

Fe + CuSO₄ > FeSO₄ + Cu

Answer

Cu + SO₄ > CuSO₄

Question 8

What is the general form of a combustion reaction?

Accepted Answer

$$C_xH_y + O_2 \rightarrow CO_2 + H_2O$$

Answer

$$A + B \rightarrow AB$$

Answer

$$AB \rightarrow A + B$$

Answer

$$AB + CD \rightarrow AD + CB$$

Question 9

Which element is always present in the reactants of a combustion reaction?

Accepted Answer

oxygen

Answer

hydrogen

Answer

carbon

Answer

water

Question 10

How do you know?

Accepted Answer

A CxHy reacts with oxygen to form carbon dioxide and water.

Answer

One cation (+ion) combines with the other molecules anion(-ion)

Answer

The metals trade anions (- ions) to produce new products.

Answer

The molecules combine to form a new substance.

Question 11

How do you know?

Accepted Answer

A CxHy reacts with oxygen to form carbon dioxide and water.

Answer

One cation (+ion) combines with the other molecules anion(-ion)

Answer

The metals trade anions (- ions) to produce new products.

Answer

The molecules combine to form a new substance.

Question 12

What type of reaction is the following:
$$C_{11}H_{24}+17O_2->\ 11CO_2\ +\ 12H_2O$$

Accepted Answer

Combustion

Answer

Combination

Answer

Decomposition

Answer

Single Replacement

Answer

Double Replacement

Question 13

What is the general reaction scheme for a combustion reaction?

Accepted Answer

$$C_xH_y+O_2\ ->\ CO_2+H_2O$$

Answer

A + B --> AB

Answer

AB --> A + B

Answer

A + CD --> C + AD

Answer

AB + CD --> CB + AD

Question 14

What are the types of combustion?

Accepted Answer

Complete & incomplete

Answer

Incomplete & inexact

Answer

Impossible & complete

Answer

Computer & incompete

Question 15

Complete combustion is when there is plenty of oxygen to react with.

Accepted Answer

True

Answer

False

Question 16

Incomplete combustion is when there is a limited amount of oxygen.

Accepted Answer

True

Answer

False

Question 17

A compound that contains only carbon and hydrogen and that produces carbon dioxide and water when burned is called a(n)

Accepted Answer

hydrocarbon

Answer

binary compound

Answer

carbonate

Answer

ionic compound

Question 18

Why do we burn a fuel?

Accepted Answer

To release energy

Answer

To have fun

Answer

To lose energy

Answer

To produce carbon dioxide

Question 19

Which type of energy change occurs during a combustion reaction?

Accepted Answer

Exothermic.

Answer

Endothermic.

Answer

Isothermal.

Answer

Adiabatic.

Question 20

How does the law of conservation of mass apply to combustion reactions?

Accepted Answer

The total mass of the products is equal to the total mass of the reactants.

Answer

The total mass of the products is greater than the total mass of the reactants.

Answer

The total mass of the products is less than the total mass of the reactants.

Answer

The total mass of the products is unrelated to the total mass of the reactants.

Question 21

What is the main characteristic of a complete combustion reaction?

Accepted Answer

It produces carbon dioxide and water.

Answer

It produces carbon monoxide and water.

Answer

It produces soot and water.

Answer

It produces only water.

Question 22

What is the primary product of complete combustion of a hydrocarbon?

Accepted Answer

Carbon dioxide

Answer

Carbon monoxide

Answer

Methane

Answer

Oxygen

Question 23

Which of the following is a necessary condition for a combustion reaction to occur?

Accepted Answer

Presence of a fuel

Answer

Presence of a catalyst

Answer

Absence of oxygen

Answer

Low temperature

Question 24

In a combustion reaction, what role does oxygen play?

Accepted Answer

It acts as an oxidizing agent

Answer

It acts as a fuel

Answer

It acts as a reducing agent

Answer

It acts as a catalyst

Question 25

What is the main difference between complete and incomplete combustion?

Accepted Answer

Complete combustion produces carbon dioxide, while incomplete combustion produces carbon monoxide

Answer

Complete combustion produces carbon monoxide, while incomplete combustion produces carbon dioxide

Answer

Complete combustion requires a catalyst, while incomplete combustion does not

Answer

Complete combustion occurs at a lower temperature than incomplete combustion

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science