Question

1) Give reason:
a) Ventilators are placed above the window.
b) Tea pots are usually light colored​

Answer 1

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Answer 2

Answer:

Give reason:

a) Ventilators are placed above the window.

Ans: Ventilators are provided in the rooms at the top of the roofs because if the air inside the room gets hot, the hot air rises up and flows through these ventilators and thus cool air remains at bottom. It brings cool and fresh air in the room. Thus ventilators maintain conventional currents to keep the air fresh in the room.

2) Tea pots are usually light coloured.

Ans: A shiny tea pot stays hotter than dull brown pot because the shiny surface does not radiate heat from it.

Explanation:

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