AP EAPCET 2024 - 22th May Evening Shift | Solid State Question 1 | Chemistry

A compound is formed by atoms of $A, B$ and $C$. Atoms of $C$ form hcp lattice. Atoms of $A$ occupy $50 \%$ of octahedral voids and atoms of $B$ occupy $2 / 3$ rd of tetrahedral voids. What is the molecular formula of the solid?

$A_3 B_8 C_6$

$A_2 B_8 C_6$

$A B_4 C_3$

$A_5 B_8 C_6$

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

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Zinc oxide (white) is heated to high temperature for some time. Observe the following statements regarding above process. I. Zinc oxide colour changes to pale yellow II. The type of defect formed is 'metal deficiency' III. Some $\mathrm{Zn}^{2-}$ and $\mathrm{e}^{-}$are present in interstitial place The correct statements are

I, II only

I, III, only

II, III only

I,II and III

AP EAPCET 2024 - 21th May Evening Shift

MCQ (Single Correct Answer)

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Identify the incorrect set from the following.

$\mathrm{SiO}_2$, covalent solid, insulator, high melting point

MgO , covalent solid, insulator, high melting point

$\mathrm{H}_2 \mathrm{O}_{\text {(ice) }}$, molecular solid, insulator, low melting point.

$\mathrm{Ag}(\mathrm{s})$, metallic solid, conductor, high melting point.

AP EAPCET 2024 - 21th May Morning Shift

MCQ (Single Correct Answer)

-0

What are the variables in the graph of powder diffraction pattern of a crystalline solid?

$X$-axis $=2 \theta: Y$-axis $=$ intensity

$X$-axis $=$ intensity : $Y$-axis $=2 \theta$

$X$-axis $=\theta: Y$-axis $=$ intensity

$X$-axis $=$ intensity : $Y$-axis $=\theta$

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