1
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

An element with simple cubic close structure has edge length of unit cell $$3.86 ~\mathop A\limits^o$$. What is the radius of atom?

A
$$5.79 \times 10^{-8} \mathrm{~cm}$$
B
$$1.93 \times 10^{-8} \mathrm{~cm}$$
C
$$3.86 \times 10^{-8} \mathrm{~cm}$$
D
$$2.43 \times 10^{-8} \mathrm{~cm}$$
2
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the volume of unit cell of a metal (at. mass $$25 \mathrm{~g} \mathrm{~mol}^{-1}$$ ) having $$\mathrm{BCC}$$ structure and density $$3 \mathrm{~g} \mathrm{~cm}^{-3}$$ ?

A
$$3.64 \times 10^{-23} \mathrm{~cm}^3$$
B
$$1.56 \times 10^{-24} \mathrm{~cm}^3$$
C
$$2.76 \times 10^{-23} \mathrm{~cm}^3$$
D
$$1.88 \times 10^{-24} \mathrm{~cm}^3$$
3
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following instruments is used to determine the crystal structure?

A
Scanning electron microscope
B
FTIR spectrophotometer
C
X-ray diffractometer
D
Transmission electron microscope
4
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

How many total voids are present in 1 mole of compound that forms hcp structure?

A
$$1.806\times10^{24}$$
B
$$1.204\times10^{24}$$
C
$$3.011\times10^{23}$$
D
$$6.022\times10^{23}$$
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