Question

True or false : 1. Carbon dioxide is a supporter of combustion.
2. A clear solution of Ca(OH)2 is known as lime water.
3. Dry ice produces very low temperature of about - 40°C.
4. Dry ice does not sublime.
5. Carbon dioxide helps in respiration.​

Answer 1

Answer:

1-False

2-true

3-idk

4-false

5-false

Answer 2

Answer:

1. FALSE

2. TRUE

3. FALSE

4. FALSE

5. TRUE

Explanation :

1. The statement is false as Oxygen is a supporter of combustion not CO2.

2. Yes the second statement is absolutely true.

3. The statement is false as dry ice produces a temperature of - 78.5C.

4. This statement is false as dry ice carries sublimation to convert itself from solid to gas directly.

5. This statement is true that CO2 helps in respiration as it is picked up by the body cell(Not blood) for carrying out their processes and also it leads to affinity of O2 in haemoglobin and also makes a drift blow in blood.

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