Question

Identify the type of chemical reaction in the following statements and define each of them:-
1- Digestion of food in our body
2- Rusting of Iron
3- Heating of manganese dioxide with aluminium powder
4- Blue colour of copper sulphate solution disappears when iron filings are added to it
5- Dil. HCl acid is added to sodium hydroxide solution to form sodium chloride and water. (5 marks)

Answer 1

Thanks for asking the question.
Digestion is simple breakdown of complex substances
Rusting of iron is an oxidation process that takes place in the presence of oxygen and moisture.
Heating manganese dioxide with aluminum powder is displacement reaction
Addition of iron fillings to copper sulphate solution is also a displacement reaction as iron replaces copper
Last one is neutralization reaction as acid and base react to produce salt and water.
Hope it helps.

Answer 2

Answer:

Explanation:

Answer :-

1. Decomposition Reaction - Carbohydrates are broke down to form glucose as by-product.

2. Oxidation Reaction -When an iron object is left in moist air for a few days or week, it gets a layer of a red-brown flaky substance called rust.

3. Displacement reaction - In this More reactive metal displaces less reactive metal from its salt solution.

4. Displacement reaction - In this More reactive metal displaces less reactive metal from its salt solution.

5. Double displacement reaction - In this reaction, two compounds react by an exchange of ions to form two new compounds.