Chemistry-I question paper (CHEM 102/AS 109) from BUTEX affiliated colleges' 2020 Level-1 Term-I finals. Covers periodic classification, quantum number calculations, Fajan's rules with nitrogen bond order, hydrogen bonding, acid strength ordering, and Raoult's law derivations.
Level-1 Term-I, Final Exám-2020
Subject: Chemistry-I (Code: CHEM 102/AS 109)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) State the modern Periodic law.
(b) Write down the classification of element on the basis of electronic configuration.
(c) When the principal quantum n = 4, Calculate the value of other quantum numbers.
(d) Define ionization potential. Why the ionization potential of N higher than O?
[2+4+2+4=12]
2. (a) What are main postulates of Fajan’s rule?
(b) Explain why the bond order of N₂ is three?
(c) Write any three basic principle of molecular orbital theory.