Two Chemistry-I papers (CHEM 101) from BUTEX affiliated colleges' 2019 Level-1 Term-I finals. Questions include orbit-orbital distinctions, MOT for oxygen, primary and secondary valency, EAN rule, Werner's theory, and colligative property derivations.
Q1
Level-1 Term-I, Final Exám-2019
Subject: Chemistry-I (Code: CHEM 101)
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) Define the orbit and orbital.
(b) Discuss any two principles governing for the distributions of electron in an atom.
(c) Define quantum numbers and show their relationship.
(d) Compare the size of Fe with Fe²⁺ and Cl with Cl⁻.
[2+4+4+2=12]
2. (a) Define bonding, anti bonding and non bonding electron with example.
(b) Discuss the salient features of valence bond theory.
(c) Explain bond order of O₂ in terms of MOT.
(d) AgF is ionic but AgI is covalent compound explain in terms of Fajan’s rule.
[3+4+3+2=12]
Q2
Level-1 Term-I, Final Exám-2019
Subject: Chemistry-I (Code: 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) Define the orbit and orbital.
(b) Discuss any two principles governing for the distribution of electron in an atom.
(c) Define quantum numbers and show their relationship.
(d) Compare the size of Fe with Fe²⁺ and Cl with Cl⁻.
[3+6+5.5+3=17.5]
2. (a) Define bonding, anti bonding and non bonding electron with example.
(b) Discuss the salient features of valence bond theory.
(c) Explain bond order of O₂ in terms of MOT.
(d) AgF is ionic but AgI is covalent compound explain in terms of Fajan’s rule.
[4.5+6+4+3=17.5]