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Important Questions for BE Mechanical Engineering Semester 2 (FE First Year) - University of Mumbai - Applied Chemistry 2

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Applied Chemistry 2
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Explain why cathodic coating is preferred over anodic coating for manufacturing of containers to store food stuffs.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Cathodic Protection Sacrificial Anodic Protection

Porous Film is also called as ‘Non protective Film’. Explain with an example.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Types of Corrosion > Dry Or Chemical Corrosion Due to Oxygen

Define Electrochemical Corrosion. Explain Intergranular Corrosion with a neat diagram.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Types of Electrochemical Corrosion Intergranular Corrosion

Iron does not rust even if the zinc coating is broken in a galvanized iron pipe.Give reasons. 

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Cathodic Protection Impressed Current Method

Calculate the higher and lower calorific values of coal sample contains 84%carbon, 1.5% sulphur, 0.6 Nitrogen, 5.5% hydrogen and 8.4% oxygen. 

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Types of Corrosion > Dry Or Chemical Corrosion Due to Other Gases

What is cathodic protection?

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Cathodic Protection Impressed Current Method

Explain impressed current cathodic protection with the applications.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Cathodic Protection Impressed Current Method

Mention three functions of thinner in paint. 

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Organic Coatings

Define corrosion of metals. Explain the electrochemical theory of wet corrosion, giving its mechanism. 

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Types of Corrosion > Wet Or Electrochemical Corrosion- Mechanism Evolution of Hydrogen Type

List the three main constituents of paint and give functions of each.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Organic Coatings

Explain how areas of cathode and anode affect the rate of corrosion.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Factors Affecting the Rate of Corrosion Relative Area of Anodic and Cathodic Parts

Explain how the following factors affect the rate pf corrosion 

i) pH

ii) Ratio of anode to cathode areas. 

iii) Position of metal in galvanic series.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Factors Affecting the Rate of Corrosion Influence of Ph

Gold does not get corroded due to oxidation. Why?

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Factors Affecting the Rate of Corrosion- Nature of Metal

Distinguish between anodic and cathodic coating 

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Factors Affecting the Rate of Corrosion Relative Area of Anodic and Cathodic Parts

Explain the advantages of galvanizing over tinning.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Types of Electrochemical Corrosion- Galvanic Cell Corrosion

Explain the following factor affecting the rate of corrosion:
Relative areas of anode and cathode.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Factors Affecting the Rate of Corrosion Relative Area of Anodic and Cathodic Parts

Explain the following factor affecting the rate of corrosion: 
Purity of Metal

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Factors Affecting the Rate of Corrosion Purity of Metal

Explain the following factor affecting the rate of corrosion: Effect of pH

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Factors Affecting the Rate of Corrosion Influence of Ph

What is pigment?

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Organic Coatings

Give two functions of pigment.

Appears in 1 question paper
Chapter: [6] Corrosion
Concept: Organic Coatings
< prev 1 to 20 of 97 next > 
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