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प्रश्न
You are going to listen to a presenter discussing three new inventions- The Solar Water Purifier. As you listen complete the notes given below :
Ill. Solar water purifier
1. First type features
(i) ..........................
(ii) .......................
2. Second type features
(i)........................................
(ii) ....................................
(iii) process of distillation
(a) water heated by .......................
(b) water condenses on .....................................
(c) impurities collected in ..................
(d) water collected in .................
(e) from trough into.......................
(f) germs and bacteria killed by ...........................
उत्तर
Ill. Solar water purifier
1. First type features
(i) twelve volt water pu rifier
(ii) more potable
2. Second type features
(i) distillation without electricity
(ii) relatively inexpensive
(iii) process of distillation
(a) water heated by → sun rays
(b) water condenses on → the underside of solar panel
(c) impurities collected in → a box
(d) water collected in → a trough
(e) from trough into → the collection bottles
(f) germs and bacteria killed by → UV rays from the sun.
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संबंधित प्रश्न
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You are going to listen to a presenter discussing three new inventions-The Solerickshaw . As you listen complete the note given below :
Solar powered inventions :
I. Solerickshaws
1. Features
You have listened to a presentation on three new inventions. One of them is solar water purifier. The stages of water purifier can be set in a flow-chart. Copy and complete the following flow chart with the stages in their correct order.
1 . impurities of water remain in the box
2 .sun rays heat the water
3 . box filled with unpurified water
4 . solar panel is placed on top of a rectangular shaped box
5 . water condenses on the underside of the solar power
6 . slope of the panel allows water to be collected in the trough
7 . bottles collect water from trough
Below is a flow chart describing the process of making rubber. Use it to help you copy and complete the process description that follows it. Remember to use the simple present tense, a mixture of actives and passives, and to add sequence markers where you see
First rubber trees ......... in deep soil. When the trees ..........., fully the........................., the bark of the tree .... and containers ..................... The latex ............... and is ........... to the factory . Here it .................... by treating it with acetic acid. The coagulated mass ................... It is then ........... into blocks or............... into sheets. ................................ in a current of warm air.
