1
MHT CET 2026 20th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following reaction steps is known as propagation step
A
$\text{Cl-Cl} \rightarrow \text{Cl}^\bullet + \text{Cl}^\bullet$
B
$\text{CH}_3 + \text{Cl}_2 \rightarrow \text{CH}_3\text{-Cl} + \text{Cl}^\bullet$
C
$\text{CH}_3^\bullet + \text{Cl}^\bullet \rightarrow \text{CH}_3\text{-Cl}$
D
$\text{CH}_3^\bullet + \text{CH}_3^\bullet \rightarrow \text{CH}_3\text{-CH}_3$
2
MHT CET 2026 20th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
A metal crystallizes in a bcc unit cell having unit cell volume $2.5 \times 10^{-23}\ \text{cm}^3$. Find the number of unit cells in 18 g metal if the density of metal is $7.2\ \text{g cm}^{-3}$.
A
$1.0 \times 10^{23}$
B
$2.0 \times 10^{23}$
C
$0.5 \times 10^{23}$
D
$1.5 \times 10^{23}$
3
MHT CET 2026 20th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
A metal has a fcc structure if the edge length of unit cell is 200 pm, calculate the volume occupied by particles in a unit cell.
A
$2.08 \times 10^{-24}\ \text{cm}^3$
B
$5.92 \times 10^{-24}\ \text{cm}^3$
C
$8 \times 10^{-24}\ \text{cm}^3$
D
$3.14 \times 10^{-24}\ \text{cm}^3$
4
MHT CET 2026 20th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following defects is observed in steel?
A
Substitutional impurity defect
B
Interstitial impurity defect
C
Vacancy defect
D
Schottky defect

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