B.Tech. I & II Semester
Examination, November 2022
Grading System (GS)
Max Marks: 70 | Time: 3 Hours
Note:
i) Attempt any five questions.
ii) All questions carry equal marks.
a) What is the principle of EDTA method? Explain the estimation of total hardness of water by complexometric method.
b) Calculate the total hardness of a water sample which shows following analysis :
$Ca(HCO_3)_2 = 4.86$ mg/L; $Mg(HCO_3)_2 = 5.84$ mg/L; $CaSO_4 = 6.8$ mg/L and $MgSO_4 = 8.4$ mg/L.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) What is Caustic embrittlement? How do you prevent it?
b) How is portable water disinfected by ozonation?
Answer (a): To be posted here.
Answer (b): To be posted here.
Write a note on lubricants with special reference to their (i) classification (ii) mode of action with examples and uses.
Answer: To be posted here.
a) What is the difference between free radical and ionic polymerization?
b) Write a note on preparation, properties and uses of:
i) Bakelite
ii) NYLON 6,6
Answer (a): To be posted here.
Answer (b): To be posted here.
Differentiate the following with suitable examples.
a) Galvanic series and Electrochemical series.
b) Thermosetting polymers and Thermoplastic polymers.
Answer (a): To be posted here.
Answer (b): To be posted here.
a) What is Spectroscopy? Describe the principle, instrumentation process of vibrational and rotational spectroscopy.
b) Explain about Lambert and beer's law.
Answer (a): To be posted here.
Answer (b): To be posted here.
Describe about the following:
i) Zeolite process
ii) ion-exchange process with neat diagram
Answer: To be posted here.
i) Phase diagram of single component systems
ii) Electronic transitions
iii) Vibrational modes in IR spectroscopy
iv) Electro negativity
Answer: To be posted here.
