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1
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the volume of unit cell if an element having molar mass $$56 \mathrm{~g} \mathrm{~mol}^{-1}$$ that forms bcc unit cells.

$$\left[\rho \cdot \mathrm{N}_{\mathrm{A}}=4.8 \times 10^{24} \mathrm{~g} \mathrm{~cm}^{-3} \mathrm{~mol}^{-1}\right]$$

A
$$1.17 \times 10^{-23} \mathrm{~cm}^3$$
B
$$4.79 \times 10^{-23} \mathrm{~cm}^3$$
C
$$3.31 \times 10^{-23} \mathrm{~cm}^3$$
D
$$2.33 \times 10^{-23} \mathrm{~cm}^3$$
2
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In an ionic crystalline solid, atoms of element Y forms hcp structure. The atoms of element X occupy one third of tetrahedral voids. What is the formula of compound?

A
$$\mathrm{X}_2 \mathrm{Y}_3$$
B
$$\mathrm{XY}$$
C
$$\mathrm{X}_3 \mathrm{Y}_3$$
D
$$\mathrm{XY}_2$$
3
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is total number of crystal systems associated with 14 Bravais lattices?

A
7
B
14
C
1
D
3
4
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which statement from following about nano-material is NOT correct?

A
As the particle size decreases the total surface area of particles increases.
B
Nano-material based catalysts exhibit increased catalytic activities.
C
Nano-sized Cu and Pd clusters have very less hardness than bulk metal.
D
Carbon nano-tube can act as electrical conductor.
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