Activity 2.4 Class 8 Science Friends and Foe
In this post, you will find NCERT
Science Class 8 Chapter 2 Friends and Foe Activity solutions. Class 8 science chapter 2
consists of NCERT Activity 2.4
Class 8 Science Explanation with a conclusion.
NCERT Activity 2.4 Class 8 Science Explanation with a conclusion
You are suggested to study NCERT activity 2.4 class 8 science explanation
with a conclusion so that you can attempt questions based on activity 2.4
class 8 science.
Activity 2.4 Class 8 Science
· Take a 500mL beaker
filled up to ¾ with water.
· Dissolve 2-3
teaspoons of sugar in it.
· Add half a spoon
of yeast powder to the sugar solution.
· Keep it covered in
a warm place for 4-5 hours.
· Now smell the solution.
· Can you get a
smell?
 |
| Activity 2.4 Class 8 Science Friends and Foe |
Observation activity 2.4 Class 8 Science
We
get a foul smell. This smell is of alcohol.
Explanation activity 2.4 Class 8 Science
Sugar
is used by yeast as food and is converted into alcohol by yeast.
The
process of conversion of sugar into alcohol is known as fermentation.
This process happens in the absence of oxygen(anaerobic respiration)
Fermentation
is used in our daily life in preparing bread, wine, beer, etc.
Glucose ----------------→ Ethanol + CO2 + Energy
Yeast
Conclusion activity 2.4 Class 8 Science
This activity shows the process of fermentation.
Related Topics
1. Activity 2.3 Class 8 Science
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