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2. True / False:a. Carbon di oxide released during photosynthesis.b. Digestion of starch starts in the stomach.C. Sodium hydroxide turns blue litmus red. -d. Tron and rust are the same substance.e. Cutting a log of wood into pieces is a chemical change.f. Tooth decay is caused by the presence of base.g. Formation of manure from leaves is a physical change.h. The gall bladder temporarily stores bile.i. The tongue helps in mixing food with saliva.i. Nitric acid turns red litmus blue. |
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Answer» 1st True4th False5th False6th False7th False8th False9th True10th False 1st false 2nd false 3rd true4th false 5th false 6th false 7th true 8th false 9th true 10th false 1)True2)False3)True4)false5)false6)false7)false8)true9)false10) 1=true2=false3=true4=false5=false6=false7=false8=true9=false10=false |
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