20 Questions
Which model assumes electrons revolve around the atomic nucleus in discrete orbitals?
Bohr atomic model
In wave mechanics, what are electrons in an atom characterized by?
Quantum numbers
Which concept in quantum mechanics limits each electron state to hold no more than two electrons with opposite spins?
Pauli exclusion principle
Which of the following is not a subshell according to quantum mechanics?
b
What element improves the machinability of steel?
Nickel and chromium
In pig iron, the carbon content typically ranges from:
1 to 5%
Which space lattice is found in alpha-iron?
Face centred cubic space lattice
The essential property for spring materials is:
Resilience
What is the name of the elements positioned in Group 0 of the periodic table, with filled electron shells and stable electron configurations?
Inert gases
Which term describes elements that have the capability of giving up their few valence electrons to become positively charged ions?
Electropositive
Which type of primary or chemical bond is found in solids?
All of the above
What is the term for the attractive bonding force between atoms?
Attraction force
What is the term used when polymorphism is found in elemental solids?
Allotropy
Which term refers to materials composed of many small crystals or grains in crystalline solids?
Polycrystalline
What term is used for non-crystalline solids that lack a systematic and regular arrangement of atoms?
Amorphous
Which type of defect is a normally occupied point in a crystal lattice from which an atom is missing?
Vacancy
What is the stress in section A if the Young's modulus is 2.1x10^5 N/mm^2?
𝜎1 = 111.408 N/mm^2; 𝜎2 = 49.5146 N/mm^2; 𝜎3 = 71.825 N/mm^2
What force 'P' will cause a total length decrease of 0.25 mm in the member?
124.37 kN
If the bar is subjected to a tensile load of 160kN, what is the stress limit in the middle portion?
400 N/mm^2
For a total elongation of 0.2 mm, what is the diameter and length of the middle portion of the bar?
D = 3.685 cm; L = 40.714 cm
Test your knowledge on solidmorphism, polymorphism, crystalline solids, and non-crystalline solids with this quiz. Identify terms related to the structural properties of elemental solids.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
