EXPLAIN THE CHALK METHOD OF TESTING THE HATCH COVER.
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A test for weathertightness of the hatch covers or doors. It uses chalk rubbed on the compression bar to imprint on the seal. - Hose test – A test to verify the tightness of the structure by a jet of water. It is usually applied for hatch covers, doors and windows.
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the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
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