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Chemical reaction in which a more reactive element displaces a less reactive element from its compound is called as displacement reaction. Both metals and non-metals take part in displacement reactions. Some applications of displacement reactions are thermite welding, steel making, extraction of metals, and relief from acid indigestion.1. What is the type of the chemical reaction: AgNO3 + HCl \(\longrightarrow\) Agcl + HNO3(i) Double displacement reaction(ii) Single displacement reaction(iii) Decomposition reaction(iv) Combination reaction2. What is the type of the chemical reaction: Mg + 2HCl \(\longrightarrow\) MgCl2 + 2H2(i) Double displacement reaction(ii) Single displacement reaction(iii) Decomposition reaction(iv) Combination reaction3. What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?(i) Iron nails become brownish in colour(ii) Blue colour of copper sulphate solution fades(iii) Both (1) and (2)(iv) No change4. In the above image, What are the reducing and oxidising agent?(i) H2S is reducing agent and SO2 is oxidising agent(ii) H2S is oxidising agent and SO2 is reducing agent(iii) H2O is oxidising agent and SO2 is reducing agent(iv) S is oxidising agent and SO2 is reducing agent5. State true or false: Butylated hydroxyanisole (BHA) is synthetic antioxidant(i) TRUE(ii) FALSE |
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Answer» 1. (i) Double displacement reaction 2. (ii) Single displacement reaction 3. (iii) Both (i) and (ii) 4. (i) H2S is reducing agent and SO2 is oxidising agent 5. (i) TRUE |
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