1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is total number of donor atoms in $$\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)\left(\mathrm{NH}_3\right)_5\right] \mathrm{I}_3$$ ?

A
5
B
9
C
6
D
3
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which from following equations is used to express the angular momentum of an electron in a stationary state?

A
$$m v r=\frac{n h}{2 \pi}$$
B
$$\mathrm{mvr}=\frac{2 \pi}{\mathrm{nh}}$$
C
$$r=\frac{m v h}{n 2 \pi}$$
D
$$\mathrm{mv}=\frac{2 \pi \mathrm{r}}{\mathrm{nh}}$$
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which emission transition series is obtained when electron jumps from $$\mathrm{n}_2=\infty$$ to $$\mathrm{n}_1=1$$ ?

A
Balmer
B
Lyman
C
Paschen
D
Bracket
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is half life time of a first order reaction if initial conc. of reactant is $$0.01 \mathrm{~mol} \mathrm{~L}^{-1}$$ and rate of reaction is $$0.00352 \mathrm{~mol} \mathrm{~L}^{-1}$$ minute $$^{-1}$$ ?

A
1.969 minute
B
7.75 minute
C
16.69 minute
D
19.69 minute
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