GATE CY Solids PYQs & Answers — Page 2

Questions 11–16 of 16. Imported answers require independent review unless marked reviewed.

Topic practice 16 questionsPage 2 of 2

The INCORRECT statement about the solid-state structure of CsCl and CaF₂ is:

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Cations in both solids exhibit coordination number 8.

CsCl has bc type structure and CaF₂ has cubic close pack structure.

Radius ratio for Cs/Cl and Ca/F is 0.93 and 0.73, respectively.

Both exhibit close pack structure.

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Among the following compounds, a normal spinel is

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MgFe₂O₄

ZnFe₂O₄

CoFe₂O₄

CuFe₂O₄

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For an inverse spinel, AB₂O₄, the A and B, respectively, can be

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Ni(II) and Ga(III)

Zn(II) and Fe(III)

Fe(II) and Cr(III)

Mn(II) and Mn(III)

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The energy band diagram for magnesium is (The hatched and unhatched regions in the figure correspond to filled and unfilled regions of the band, respectively.)

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Diagram for Chemistry question 14 (figure 2)

Diagram for Chemistry question 14 (figure 3)

Diagram for Chemistry question 14 (figure 4)

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P, F and I represent primitive, face-centered and body-centered lattices, respectively. The lattice types of NaCl and CsCl, respectively, are

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F and I

F and P

I and P

P and I

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The spinel structure of

has cubic close packed arrangement of oxide ions. The fractions of the octahedral and tetrahedral sites occupied by cations, respectively, are

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and

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GATE CY Solids PYQs

Question 1

Question 27

Question 40

Question 14

Question 15

Question 44