Why do wet clothes placed on a clothes line get dry after some time? Explain.
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Why is agitation necessary to get clean clothes?
A soap molecule has two parts namely hydrophobic and hydrophilic. With the help of these, it attaches to the grease or dirt particle and forms a cluster called micelle. These...
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Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor.
(a) wet marble floor, dry marble floor, newspaper and towel
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People use a variety of methods to wash clothes. Usually after adding the soap, they 'beat' the clothes on a stone, or beat it with a paddle,
Agitation is necessary to get clean clothes because the soap micelles which entrap oily or greasy particles on the surface of dirty cloth have to be removed from its surface. When...
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People use a variety of methods to wash clothes. Usually after adding the soap, they 'beat' the clothes on a stone, or beat it with a paddle,
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A flat in Mumbai with a balcony facing the sea has some clothes hung on a clothes line in the balcony.
The clothes will be blown towards the house due to sea breeze blowing towards the land.
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To clean their spectacles, people often breathe out on glasses to make them wet. Explain why the glasses become wet
When we breathe out, moist air comes out (along with energy and carbon dioxide) which make the glasses wet (as water vapours get condense on glass).
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Give reasons: (i) Wet clothes take longer time to dry on a humid day. (ii) Amount of insolation decreases from equator torwards poles?
(i) On a humid day the air is full of water vapour. Hence, evaporation is very slow. This is the reason why wet clothes take longer time to dry on...
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Wet clothes take longer time to dry on a humid day?
On a humid day, the air has greater mositure. Hence, it is not able to carry the water vapor and so, wet clothes take longer time to dry on a...
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A geographic region has the following distinct characteristics: 1. Warm and dry climate 2. Mild and wet winter
(a) Mediterrian climate have mild, rainy winter and hot, dry summers and Evergreen, Oak trees.
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Why does table salt get wet in rainy season?
NaCl is not hygroscopic but impurities like MgSO4 , CaSO4, MgCl2 and CaCl2, present in it are hygroscopic and absorb moisture from air.
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