Domestic fuels systoms
Authored by R G
Construction
2nd Grade
Used 18+ times
AI Actions
Add similar questions
Adjust reading levels
Convert to real-world scenario
Translate activity
More...
Content View
Student View
37 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main characteristic of complete combustion?
It requires less air compared to incomplete combustion.
It produces a yellow flame with no definition.
It produces carbon monoxide.
It produces a stable blue flame with a defined shape.
Answer explanation
The main characteristic of complete combustion is that it produces a stable blue flame with a defined shape, indicating efficient fuel burning with sufficient oxygen, unlike incomplete combustion which can produce yellow flames and carbon monoxide.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the chemical equation for the complete combustion of natural gas?
CH4 + O2 → CO + H2O
2O2 + CH4 → CO2 + 2H2O
CH4 + O2 → CO2 + H2O
CH4 + 2O2 → CO2 + 2H2O
Answer explanation
The complete combustion of natural gas (CH4) requires oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). The balanced equation is 1 CH4 reacting with 2 O2 to yield 1 CO2 and 2 H2O, represented as 2O2 + CH4 → CO2 + 2H2O.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is produced during incomplete combustion instead of carbon dioxide?
Oxygen
Sulphur
Water
Carbon monoxide
Answer explanation
During incomplete combustion, there is not enough oxygen to produce carbon dioxide, leading to the formation of carbon monoxide instead. This gas is toxic and a common byproduct of such combustion processes.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much air is required for the complete combustion of 1 kg of fuel?
20 kg
10 kg
5 kg
2 kg
Answer explanation
For complete combustion, approximately 10 kg of air is needed for every 1 kg of fuel. This is based on the stoichiometric ratio of fuel to air required for combustion, making 10 kg the correct answer.
Dont get confused oxygen to nat gas ratio with air to gas ratio.
Air to gas is 10/1
Oxygen to gas is 2/1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a visible sign of incomplete combustion?
A yellow flame with no definition
A large amount of heat
No soot deposits
A stable blue flame
Answer explanation
A yellow flame with no definition indicates incomplete combustion, as it suggests that not all fuel is burning efficiently. In contrast, a stable blue flame signifies complete combustion.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary role of the Regulations concerning the safe storage of fuels?
To increase the cost of fuel storage
To ensure the health and safety of the customer, installer, and property
To reduce the amount of fuel used
To make fuel storage more complicated
Answer explanation
The primary role of the Regulations concerning the safe storage of fuels is to ensure the health and safety of the customer, installer, and property, preventing accidents and hazards associated with fuel storage.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are the Regulations surrounding gas fuels such as natural gas and LPG more stringent than others?
Because gases are cheaper
Because gases are visible
Because gases cannot be seen but are explosive and flammable
Because gases are easier to store
Answer explanation
The regulations for gas fuels like natural gas and LPG are stricter because they are invisible, yet highly explosive and flammable, posing significant safety risks if not properly managed.
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports
Continue with Google
Continue with Email
Continue with Classlink
Continue with Clever
or continue with
Microsoft
%20(1).png)
Apple
Others
Already have an account?
