1
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
What are the variables in the graph of powder diffraction pattern of a crystalline solid?
A
$X$-axis $=2 \theta: Y$-axis $=$ intensity
B
$X$-axis $=$ intensity : $Y$-axis $=2 \theta$
C
$X$-axis $=\theta: Y$-axis $=$ intensity
D
$X$-axis $=$ intensity : $Y$-axis $=\theta$
2
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The density of $\beta-\mathrm{Fe}$ is $7.6 \mathrm{~g} \mathrm{~cm}^{-3}$. It crystallises in cubic lattice with $\mathrm{a}=290 \mathrm{pm}$. What is the value of $Z$ ? $\left(\mathrm{Fe}=56 \mathrm{~g} \mathrm{~mol}^{-1}: N_{\mathrm{A}}=6.022 \times 10^{23} \mathrm{~mol}^{-1}\right)$
A
2
B
1
C
4
D
6
3
AP EAPCET 2024 - 20th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A solid compound is formed by atoms of $A$ (cations), $B$ (cations) and O (anions). Atoms of O form hcp lattice. Atoms of $A$ occupy $25 \%$ of tetrahedral holes and atoms of $B$ occupy $50 \%$ octahedral holes. What is the molecular formula of solid?

A
$\mathrm{AB}_2 \mathrm{O}_4$
B
$\mathrm{ABO}_3$
C
$\mathrm{ABO}_2$
D
$\mathrm{A}_2 \mathrm{BO}_4$
4
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which one of the following is used as piezoelectric material?
A
Tridymite
B
Quartz
C
Zelolite
D
Mica
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