Question

explain the activity of the separation funnel and the sublimation process given in the textbook with the help of a diagram

Answer 1

$Answer:$

A separating funnel can be used to separate the components of the mixture of immiscible liquids. To understand this let us perform a following activity.

Let us try to separate kerosene oil from water using a separating funnel.

Pour the mixture of kerosene oil and water in a separating funnel.

Let it stand undisturbed for sometime so that separate layers of oil and water are formed. Open the stopcock of the separating funnel and pour out the lower layer of water carefully. Now close the it of the separating funnel as the oil reaches it.

Applications

• To separate mixture of oil and water.

• In the extraction of iron from its ore, the lighter slag is removed from the top by this method to leave the molten iron at the bottom in the furnace.

Answer 2

Explanation:

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Eight months after the arrival of Covid-19 and a nationwide shutdown, political life in Switzerland seems almost back to business. Plexiglass-protected parliamentarians met for the autumn session, demonstrations are again allowed (under conditions), and most votes and local elections are going ahead as planned.

But the reality is different for campaigners behind people’s initiatives and referendums, the two key instruments of the Swiss direct democracy system. While on paper they can go out onto the street and gather support, the pandemic is slowing them down.

“It’s definitely more difficult to collect signatures,” said one campaigner from the Communist Swiss Labour Party, canvassing in Bern last weekend for a local initiative demanding free public transport. Not only are there fewer people on the street, but social distancing rules and the added barrier of a mask means they are less keen to be approached, he said

A separating funnel can be used to separate the components of the mixture of immiscible liquids. To understand this let us perform a following activity.

Let us try to separate kerosene oil from water using a separating funnel.

Pour the mixture of kerosene oil and water in a separating funnel.

Let it stand undisturbed for sometime so that separate layers of oil and water are formed. Open the stopcock of the separating funnel and pour out the lower layer of water carefully. Now close the it of the separating funnel as the oil reaches it.

Applications

• To separate mixture of oil and water.

• In the extraction of iron from its ore, the lighter slag is removed from the top by this method to leave the molten iron at the bottom in the furnace.