Advertisements
Advertisements
Question
Observe the set-up given in figure and answer the following questions.
- What happens to the sugar solution in A?
- Which gas is released in A?
- What changes will you observe in B when the released gas passes through it?
Answer in Brief
Advertisements
Solution
- Yeast grow very rapidly on the sugar containing substrates. It multiplies and increases its number and in process converts the sugar into alcoholic products with the release of CO2 gas.
In flask A, fermentation is occurring due to the presence of yeast and its utilisation of sugar. - Carbon dioxide is released in A during the fermentation process.
- The gas released due to the fermentation of sugar in the setup is CO2. When CO2 is passed over lime water in set up S its color changes, i.e. the lime water turns milky.
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
What’s the solution?
Fruits like mangoes, amlas, guavas and vegetables like peas onions, tomatoes, fenugreek are needed all year round. They are available in plenty only in certain seasons.
What are preservatives?
Here is Nandini‘s lunch box.
- Are all the items healthy?
- Suggest her to remove one food which is not healthy and add one food which is healthy. Give reasons for change.
_______ is an easily digested food.
Write about any two preservation methods.
Explain any four food preservation methods.
Name the process in yeast that converts sugars into alcohol.
How can we prevent the following diseases?
Cholera
Match the following:
| 1. | Vacuum drying | a. | Vegetables |
| 2. | Cold storage | b. | Seeds |
| 3. | Deep freezing | c. | Cheese powder |
| 4. | Canning | d. | Meat |
Find the odd-man-out.
