Download SGBAU B-Tech 3rd Sem Inorganic Chemistry Question Paper

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B.Tech. Third Semester (Chem. / Poly / Food / Pulp / Oil / Petro) (Old)
Inorganic Chemistry
3SCE1
Pages: 2
Time : Three Hours

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Notes:

1. Due credit will be given to neatness and adequate dimensions.
2. Assume suitable data wherever necessary.

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3. Diagrams and chemicals equations should be given wherever necessary.
4. Discuss the reaction, mechanism wherever necessary.
5. Use of pen Blue/Black ink/refill only for writing the answer book.

SECTION - A

1. a) Derive the Schrodinger wave equation. 6
   

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   b) State and explain de Broglie's principle. 4
   c) Write the postulates of Bohr's theory. 3
   OR
2. a) What are quantum numbers ? Discuss and give the distribution of electrons within the orbital. 6
   b) Explain the following : 4
   

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   i) Atomic number ii) Aufbau principle
   c) State and explain Heisenberg's uncertainty principle. 3
3. a) What is ionic bond ? Explain with example and properties. 6
   b) Explain the following : 8
   i) Covalent bond ii) Metallic bond
   

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   iii) Bond energy iv) Bond length
   OR
4. a) What is meant by lattice energy ? Discuss the Born Haber cycle. 6
   b) What is hydrogen bonds ? How are they classified. 4
   c) What is hybridisation ? Discuss SP³ hybridisation with example. 4

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5. a) What is coordinate bond ? Discuss valence bond theory. 6
   b) Write the applications of chelates. 4
   c) What are the factors affecting the stability of complexes. 3
   OR
6. a) Explain the Werner coordination theory for octahedral complexes. 4
   

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   b) Explain inner and outer orbital complexes. 3
   c) Explain the terms : 6
   i) Chelate ii) Ligand
   iii) Coordination number

SECTION - B

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1. a) What is meant by alloy ? Discuss the magnetic separation method. 5
   b) Explain the roasting and calcination with example. 4
   c) What is Bronze ? Write their uses. 4
   OR
2. a) Write the importance of ore dressing discuss any two methods. 5
   

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   b) Explain the following : 4
   i) Gangue ii) Slag
   c) Discuss the froth flotation process. 4
3. a) Discuss the manufacturing of glass. 6
   b) How the color imported in glass (any four) 4
   

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   c) What are the basic raw material of ceramics. 4
   OR
4. a) What is meant by refractories ? Describe the manufacturing steps. 6
   b) What is potash glass ? Explain the properties and uses. 4
   c) Write the industrial applications of refractories. 4

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5. a) Discuss the industrial manufacturing process of sulphuric acid. 6
   b) State the applications of activated carbon. 4
   c) Write the names of nitrating agent. 3
   OR
6. a) Discuss the manufacturing process of nitric acid. 6
   

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   b) Write the industrial applications of - 4
   i) Activated carbon ii) Rare gas
   c) Write the names of sulphonating agent 3

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