Question

How is air used as an insulator in our homes?(short answer please )​

Answer 1

Explanation:

Question :-

Assertion : Colour of Copper Sulphate does not change when Iron nail is dipped into it.

Reason : Iron is more reactive than Copper Sulphate and it displaces it.

a) Both Assertion and reason are true and reason is the correct explanation of assertion.

b) Both Assertion and reason are true but reason is not the correct explanation of assertion.

c) Assertion is true and reason is false

d) Assertion is false and reason is true

Required Answer :-

When Iron nail is dipped into the copper sulphate solution. Reaction between Copper sulphate solutipn and iron takes place. In this reaction iron is capable of displacing copper from copper sulphate solution , since it is more reactive compared to the copper. This reaction also results in the change of colour of the solution. \begin{gathered}\\\end{gathered}

Now , Observing Both assertion and reason we can conclude that Assertion is incorrect and reason is true.So , Option(d) is the Question :-

Assertion : Colour of Copper Sulphate does not change when Iron nail is dipped into it.

Reason : Iron is more reactive than Copper Sulphate and it displaces it.

a) Both Assertion and reason are true and reason is the correct explanation of assertion.

b) Both Assertion and reason are true but reason is not the correct explanation of assertion.

c) Assertion is true and reason is false

d) Assertion is false and reason is true

Required Answer :-

When Iron nail is dipped into the copper sulphate solution. Reaction between Copper sulphate solutipn and iron takes place. In this reaction iron is capable of displacing copper from copper sulphate solution , since it is more reactive compared to the copper. This reaction also results in the change of colour of the solution. \begin{gathered}\\\end{gathered}

Now , Observing Both assertion and reason we can conclude that Assertion is incorrect and reason is true.So , Option(d) is the answer..

Answer 2

Answer:

An example of air as an insulator is a double-pane window. Double-pane windows are two sheets of glass with a stagnant space of air or gas between the two panes. This small space of air between the two layers of glass reduces the ability of heat transfer via convection.

HOPE IT HELPS YOU....