`{:("Across",,"Down"),(2. "The process of coating of thin layer of zine on iron",,1. "The full form of LPG"),(6."The full form of CNG",,3."Lime water is the solution of "),(7."The inactive component of air",,4."Greenhouse gas"),(9."The process of coating of thin layer of tin on iron",,5."The gas essential for photosynthesis"),(10."Air is considered as",,6."The green pigment required for photosynthesis is"),(12."The process of burning of a substance in the prence of air",,8."The slow conversion of iron into its hydrated oxide is "),(13."With increase in height the percentage of oxygen in air______.",,10."Carbon dioxide turns lime water"),(,,11."The gas essential for combustion"):}`

Answer

`{:("Across",,"Down"),(2. "Galvanization",,1. "Liquefied Petroleum Gas"),(6. "Compressed Natural Gas",,3. "Calcium hydroxide"),(7."Nitrogen",,4."Carbon dioxide"),(9."Tinning",,5."Carbon dioxide"),(10."Mixture",,6."Chlorophyll"),(12."Combustion",,8."Rusting"),(13."Decreases",,10."Milky"):}`