1
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the energy associated with third orbit of $\mathrm{He}^{+}$.

A
$-4.8 \times 10^{-19} \mathrm{~J}$
B
$-1.45 \times 10^{-19} \mathrm{~J}$
C
$-19.36 \times 10^{-19} \mathrm{~J}$
D
$-9.69 \times 10^{-19} \mathrm{~J}$
2
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the pH of buffer solution formed by mixing 0.01 M acetic acid and 0.05 M sodium acetate? $\left(\mathrm{pK}_{\mathrm{a}}=4.7447\right)$

A
$\quad 2.80$
B
3.00
C
5.44
D
6.5
3
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the geometry of $\mathrm{TeF}_4$ molecule from the following.

A
Linear
B
Tetrahedral
C
Trigonal bipyramidal
D
Trigonal
4
MHT CET 2025 20th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following set of elements is present in apatite?

A
$\mathrm{Mg}, \mathrm{P}$ and S
B
$\mathrm{Ca}, \mathrm{P}$ and O
C
$\mathrm{Al}, \mathrm{Mg}$ and P
D
$\mathrm{Ca}, \mathrm{S}$ and O

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