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

• Activity 6.1
• Activity 6.2
• Activity 6.3
• Activity 6.4
• Activity 6.5
• Activity 6.6
• Activity 6.7
• Activity 6.8

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