Tuesday, October 12, 2021

Life Processes | Class 10 | Activity 6.5 with Solution

Life Processes | Activities in Text Book with Solution

Activity 6.5

Take some fruit juice or sugar solution and add some yeast to this. Take this mixture in a test tube fitted with a one-holed cork.

Fit the cork with a bent glass tube. Dip the free end of the glass tube into a test tube containing freshly prepared lime water.

What change is observed in the lime water and how long does it take for this change to occur?

  • Answer: Air taken out through the tube makes lime water milky. 

What does this tell us about the products of fermentation?

  • ✅ Answer: Products of fermentation are CO2 and alcohol. 

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