(a) Write the chemical name of the substance taken in the test tube.(b)What is the observation ? Give reasons.( c)The airpresent in the test tube as shown in thediagram is sucked out . why ?

(a) Write the chemical name of the substance taken in the test tube.

1.	(a) Write the chemical name of the substance taken in the test tube.(b)What is the observation ? Give reasons.( c)The airpresent in the test tube as shown in thediagram is sucked out . why ?
Answer» Solution :(a) Lime WATER that is the solution of CALCIUM hydroxide is taken in the test tube. (b) Lime water turn slighty turbid due to the carbon dioxide present INAIR. (C ) The air present in the test tube is SUCKED in order to create low pressure in the test tube. Due to low pressure , air rusher through the lime water.