Changes
From Karnataka Open Educational Resources
183 bytes added
, 15:36, 25 January 2018
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| * '''Prerequisites/Instructions, if any''' | | * '''Prerequisites/Instructions, if any''' |
| * '''Multimedia resources'''<br> | | * '''Multimedia resources'''<br> |
− | {{#widget:YouTube|id=vJZF_exS7pA}} | + | Laboratory preparation of chlorine <br> |
| + | {{#widget:YouTube|id=C2kf7OBbFsM}} |
| * '''Website interactives/ links/ simulations''' | | * '''Website interactives/ links/ simulations''' |
| * '''Process (How to do the activity)''' | | * '''Process (How to do the activity)''' |
| When concentrated HCl is added drop wise to the solid potassium permanganate, chlorine gas is liberated the liberated gas is collected in separate bottles by the upward displacement of air. | | When concentrated HCl is added drop wise to the solid potassium permanganate, chlorine gas is liberated the liberated gas is collected in separate bottles by the upward displacement of air. |
| * '''Developmental Questions (What discussion questions)''' | | * '''Developmental Questions (What discussion questions)''' |
| + | 1.The liberated gas is collected using a gas jar by the upward |
| + | |
| + | displacement of air. Why? |
| + | |
| + | 2.Thistle funnel should be dipped in the acid, why? |
| * '''Evaluation (Questions for assessment of the child)''' | | * '''Evaluation (Questions for assessment of the child)''' |
| * '''Question Corner''' | | * '''Question Corner''' |