chm101 TMA 2019_2

Course Code
chm101

Question
One half of the distance between the nuclei of two adjacent metal atoms in the close packed crystal lattice is called

Answer
Crystal or Metallic radius

Question
Half the distance between the nuclei of two atoms belonging to two adjacent molecules in a crystal lattice is called

Answer
Van der waals radius

Question
One half of the distance between the nuclei of two like atoms bonded together by a single covalent bond is called

Answer
Covalent radius

Question
Why do alkali metals not occur as free elements in nature?

Answer
Because they are highly reactive elements

Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2p_{x}^{2}\)?

Answer
Aufbau principle

Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{2}2p_{x}^{2}2p_{y}^{1}\)?

Answer
Hund's rule

Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{3}\)?

Answer
Pauli's Exclusion principle
Question
What is the electronic configuration of elements with atomic number 29?

Answer
\([Ar]3d^{10}4s^{1}\)

Question
What is the electronic configuration of elements with atomic number 24?

Answer
\([Ar]3d^{5}4s^{1}\)

Question
The electron affinity decreases down the group why?

Answer
down the group the size of the atom increases and effective nuclear charge remains almost steady

Question
One half of the distance between the nuclei of two adjacent metal atoms in the close packed crystal lattice is called

Answer
Crystal or Metallic radius

Question
Half the distance between the nuclei of two atoms belonging to two adjacent molecules in a crystal lattice is called

Answer
Van der waals radius

Question
One half of the distance between the nuclei of two like atoms bonded together by a single covalent bond is called

Answer
Covalent radius

Question
Why do alkali metals not occur as free elements in nature?
Answer
Because they are highly reactive elements

Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2p_{x}^{2}\)?
Answer
Aufbau principle
Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{2}2p_{x}^{2}2p_{y}^{1}\)?

Answer
Hund's rule

Question
What principles or rules are violated in the following electronic configuration \(1s^{2}2s^{3}\)?

Answer
Pauli's Exclusion principle

Question
What is the electronic configuration of elements with atomic number 29?

Answer
\([Ar]3d^{10}4s^{1}\)

Question
What is the electronic configuration of elements with atomic number 24?

Answer
\([Ar]3d^{5}4s^{1}\)

Question
The electron affinity decreases down the group why?

Answer
down the group the size of the atom increases and effective nuclear charge remains almost steady

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TMA CIT 383 2019_2

Course Code
cit383


Question
Inheritance allows classes to be arranged into hierachy known as ___ relationship between super class and subclass.

Answer
is-a



Question
One of the advantages of inheritance is that it ___.

Answer
makes design cleaner



Question
The major issue of exposing internal data and method of object is ___.

Answer
all the above



Question
___ is the OOP concept of hiding the implementation details of a class and allowing access to the class through a public interface.

Answer
Encapsulation



Question
Pure object-oriented programming utilises ___ for message passing.

Answer
dynamic dispatch strategy



Question
An example of message passing styles is __.

Answer
flow-based programming



Question
Which of these is a type of polymorphism?

Answer
overloading



Question
The OOP concept where method to be invoked is determined at runtime is known as ___.

Answer
all the above



Question
How many abstract method(s) could a class contain to make it an abstract class?

Answer
at least 1



Question
The maximum number of superclass (es) that subclass could extend in Java is (are) ___.

Answer
1


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