Metallurgical Engineering
GATE MT topic:chemical-bonding PYQs
Build your understanding with focused practice from past exam papers.
How to practice topic:chemical-bonding
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–10 of 19. Imported answers require independent review unless marked reviewed.
Question 36
Open questionMTMCQ2 marksNeeds review
Match the crystal systems in Column I with the corresponding axial lengths (a, b, c) and interaxial angles (α, β, γ) provided in Column II
Column I
(P) Tetragonal
(Q) Rhombohedral
(R) Orthorhombic
(S) Monoclinic
Column II
(1) a ≠ b ≠ c, α = β = γ = 90°
(2) a = b ≠ c, α = β = γ = 90°
(3) a ≠ b ≠ c, α = γ = 90° ≠ β
(4) a = b = c, α = β = γ ≠ 90°
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
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A metal having body-centered cubic structure is analyzed through X-ray diffraction using monochromatic X-ray of wavelength 0.154 nm. The diffraction angle (2θ) corresponding to {2 0 0} plane is 60° (for first order reflection).
The atomic radius of this element (rounded off to three decimal places) is ________________ nm.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 18
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The coordination number for an octahedral site in pure copper is _____.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
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X-ray diffraction using a monochromatic radiation of wavelength 0.154 nm is performed on powder samples of metal A (with FCC crystal structure) and metal B (with BCC crystal structure).
If the first peak in both the cases occurs at a Bragg angle
, then the value of
= _____ (rounded off to two decimal places).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 32
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The pair-interaction energy between two atoms is given by the following expression:
where
is the interaction energy in eV and
is the interatomic distance in Å. The equilibrium bond-length between the atoms is ________ Å. (Round off to the nearest integer)Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 44
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Match the entries in Column I with the stacking sequences of the close-packed planes listed in Column II.
Column I
P. Face centered cubic (FCC) structure
Q. Intrinsic stacking fault in FCC
R. Across an annealing twin boundary in FCC
S. Hexagonal close-packed structure
Column II
ABCABC
ABABAB
ABCACBC
ABCABCABCBA
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Match the nature of bond (Column I) with material (Column II)
Column I:
(P) Ionic
(Q) Covalent
(R) Metallic
(S) Secondary
Column II:
(1) Diamond
(2) Silver
(3) NaCl
(4) Solid argon
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 23
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If the degree of polymerization of polyethylene is 3000, the average molecular weight (in g mol
) is: __________ (round off to nearest integer).(Given: Atomic weights of carbon and hydrogen are 12 and 1, respectively)
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 14
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Angle between two neighboring tetrahedral bonds in Si having a diamond cubic structure is:
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 25
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The number of atoms per unit area in (100) plane of Pb is _____ nm
(round off to the nearest integer).Given, crystal structure and atomic radius of Pb are FCC and 0.175 nm respectively.
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