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

Observe the set-up given in figure and answer the following questions.

Answer in Brief

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.

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Chapter 2: Microorganisms : Friend and Foe - Long Answer Questions [Page 10]

Chapter 2 Microorganisms : Friend and Foe
Long Answer Questions | Q 24. | Page 10

Find and correct the wrong statement.

Foodstuffs dried in summer cannot be used for the rest of the year.

Find and correct the wrong statement.

Foodstuffs get warmth when put in a fridge.

What are the different methods of preserving food?

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.

We make Idiyappam by _______ method.

The sprouting of onion and potatoes can be delayed by the process of ______.

Which one can be preserved by drying method?

Match the following:

Why is sugar used to preserve fruits and fruit products?

Find the odd-man-out.