Question 19
Question: The lid of the solar cooker is made up of ______. 1. plastic sheet 2. black sheet 3. plane mirror 4. glass Answer: ..
Solar Cooker
A solar cooker contains a wooden box having thermocol lining from inside. A box made aluminium is placed inside the wooden box. The inner side of the aluminium box is painted black. The top is closed by a glass sheet. A plane mirror is fixed to the hinged lid. The box is closed ..
Air - Essential for Burning
Air - Essential for Burning - We know that without air, we cannot burn anything. In the laboratory, if the flame of a spirit lamp is to be put out, we just place the lid of the spirit lamp on it (Fig.5.1..
Air - Essential for Burning - We know that without air, we cannot burn anything. In the laboratory, if the flame of a spirit lamp is to be put out, we just place the lid of the spirit lamp on it (Fig.5.1..See what our Users say :
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