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1. Crystallization is a process to obtainb. Pure liquids onlya. Pure solids onlyd. Solid or liquidc. Pure solids and liquids2. Rusting of iron can be prevented bya. Galvanizationb. ElectroplatingC. All of the abovec. Alloying3. Which of the following is not a chemical change?a. Spoiling of foodb. Heating an iron rodc. Curdling of milkd. Planting a free4. In which type of reaction, no new substance is formed?a. Endothermic reactionb. Exothermic reactionc. Chemical reactiond. Sublimation of a substance​

Answer»

Answer:

1. PURE SOLID and liquids

2. galvanization

3. planting a tree

4. sublimation of a SUBSTANCE


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