1
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the approximate angular momentum (in J s ) of electron in hydrogen atom in its ground state?

$$ \left(h=6.625 \times 10^{-34} \mathrm{~J} \mathrm{~s}\right) $$

A

$2110 \times 10^{-37}$

B

$2110 \times 10^{-36}$

C

$1055 \times 10^{-37}$

D

$1055 \times 10^{-36}$

2
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The energy of electron in hydrogen atom when present in $n=1, n=2$ and $n=3$ will be in the ratio of

A

$25: 16: 9$

B

$16: 9: 4$

C

$36: 9: 4$

D

$3: 2: 1$

3
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the correct order with respect to metallic property of Zr, Cd, Sn, Sr?

A

$\mathrm{Sn}<\mathrm{Cd}<\mathrm{Zr}<\mathrm{Sr}$

B

$\mathrm{Sn}<\mathrm{Sr}<\mathrm{Cd}<\mathrm{Zr}$

C

$\mathrm{Cd}<\mathrm{Zr}<\mathrm{Sr}<\mathrm{Sn}$

D

$\mathrm{Zr}<\mathrm{Sr}<\mathrm{Cd}<\mathrm{Sn}$

4
TS EAMCET 2023 (Online) 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the number of molecules in which the central atom has one lone pair of electrons from the following list.

$$ \mathrm{PbCl}_2, \mathrm{PH}_3, \mathrm{ClF}_3, \mathrm{SF}_4, \mathrm{BF}_3, \mathrm{SnCl}_2 $$

A

3

B

4

C

1

D

2

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