Modes of heat transfer — task. Science CBSE, Class 7.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Select the correct answer

1. It is the process of heat transfer from a hot body to a colder body without heating the space between the two is called ___________.

Conduction
Radiation
absorption
Convection

2. Solids are not heated by convection because __________.

(a) it is not free to move from one place to another
(b) the molecules only vibrate about a fixed position
(c) both a and b
(d) none of the above

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