Tuesday, October 12, 2021

Life Processes | Class 10 | Activity 6.4 with Solution

Life Processes | Activities in Text Book with Solution

Activity 6.4

Take some freshly prepared lime water in a test tube.

Blow air through this lime water.

Note how long it takes for the lime water to turn milky.

  • ✅ Answer: It immediately turns lime water milky.

Use a syringe or pichkari to pass air through some fresh lime water taken in another test tube (Fig. 6.7).

Note how long it takes for this lime water to turn milky.

  • ✅ Answer: It takes much time to turn the lime water milky.

What does this tell us about the amount of carbon dioxide in the air that we breathe out?

  • ✅ Answer: It shows that the breath-out air contains more CO2 as compared to atmospheric air.

Fig. 6.7

No comments:

Post a Comment