CH 112

Applied Chemistry

Chapter 6 : Oxidation And Reduction

DAE Common Technologies | First Year

Short Questions

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CH-112
Chapter 6 (Oxidation And Reduction) - Short Questions

Questions: 1 to 11

1. Give two definitions of oxidation. 2. Define oxidizing and reducing agent. 3. Describe redox reaction? 4. What are amphoteric and neutral oxides? 5. Separate oxidising and reducing agent from the following. H2SO4. KMnO4, CO, O3 6. Define sub oxides and per oxides? 7. Differentiate between acidic oxide and basic oxides with example. 8. How Al2O3 act as amphoteric oxide? 9. What is the oxidation number of oxygen in normal, per, super and sub oxides? 10. Name four normal oxides with one example in each case. 11. What is reduction? Give two examples.

1. Addition of oxygen: The addition of oxygen in an element or compound is called oxidation. For example: C + O $_2$ $\longrightarrow$ CO $_2$	آکسیجن کا ملاپ آکسیجن کا کسی عنصر یا مرکب سے ملاپ عمل تکسید کہلاتا ہے۔ مثلاً C + O $_2$ $\longrightarrow$ CO $_2$
2. Removal of oxygen: The removal of hydrogen from a compound is called oxidation. For example: Ca + 2HCl $\longrightarrow$ CaCl $_2$ + H $_2$	آکسیجن کا ملاپ ہائیڈروجن کا کسی عنصر یا مرکب سے اخراج عمل تکسید کہلاتا ہے۔ مثلاً Ca + 2HCl $\longrightarrow$ CaCl $_2$ + H $_2$

Oxidizing Agent: Those elements or compounds which help to carry out the process of oxidation are called oxidizing agents. For example: Oxygen (O $_2$ ) Ozone (O $_3$ )	تکسیدی عامل وہ عناصر یا مرکبات جو کسی شے کی تکسید کا باعث بنیں تکسیدی عامل کہلاتے ہیں۔ Oxygen (O $_2$ ) Ozone (O $_3$ )
Reducing Agent: Those elements or compounds which helped to carry out reduction of some substance are called reducing agents. For example: Hydrogen (H $_2$ ) Carbon monoxide (CO)	تخفیفی عامل وہ عناصر یا مرکبات جو کسی شے کی تخفیف کا باعث بنیں تخفیفی عامل کہلاتے ہیں۔ مثلاً Hydrogen (H $_2$ ) Carbon monoxide (CO)

Chemical reactions in which the process of oxidation and reduction takes place simultaneously are collectively called as “Redox Reactions”.
For example:
ZnO + H

_{2}

$_2$ SO

_{4}

$_4$

⟶

$\longrightarrow$ ZnSO

_{4}

$_4$ + H

_{2}

$_2$ O

وہ تعاملات جن میں الیکٹرانز کسی عنصر یا مرکب سے نکل کر کے کسی دوسرے عنصر یا مرکب میں منتقل ہو جائیں، ریڈاکس تعاملات کہلاتے ہیں۔ مثلاً
ZnO + H

_{2}