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1
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is molar mass of metal with BCC structure having density 10 g cm$$^{-3}$$ and edge length 200 pm?

A
90.2 g mol$$^{-1}$$
B
24.1 g mol$$^{-1}$$
C
48.0 g mol$$^{-1}$$
D
60.5 g mol$$^{-1}$$
2
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the number of unit cells present in 3.9 g of potassium if it crystallizes in BCC structure?

A
$${{{N_A}} \over {10}}$$
B
$${N_A} \times 10$$
C
$$2{N_A}$$
D
$${{{N_A}} \over {20}}$$
3
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

What type of crystal structure from following has 52.36% packing efficiency?

A
FCC
B
BCC
C
Hexagonal cubic
D
Simple cubic
4
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

An element (molar mass 180 ) has BCC crystal structure with density $$18 \mathrm{~g} \mathrm{~cm}^{-3}$$. What is the edge length of unit cell?

A
$$\sqrt[3]{23.2} \times 10^{-24} \mathrm{~cm}$$
B
$$\sqrt[3]{12.6} \times 10^{-24} \mathrm{~cm}$$
C
$$\sqrt[3]{33.2} \times 10^{-8} \mathrm{~cm}$$
D
$$\sqrt[3]{22.6} \times 10^{-8} \mathrm{~cm}$$
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