1
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The total number of spectral lines observed when electron returns from the 6th shell to the 2nd shell in hydrogen atom is

A

15

B

10

C

8

D

2

2
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The orbital angular momentum of an electron in $d$-orbital is equal to

A

0

B

$2 \sqrt{3} \hbar$

C

$6 \hbar$

D

$\sqrt{6} \hbar$

3
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0
The correct order of decreasing acidic nature of oxides is
A

$\mathrm{Li}_2 \mathrm{O}>\mathrm{BeO}>\mathrm{CO}_2>\mathrm{B}_2 \mathrm{O}_3>\mathrm{N}_2 \mathrm{O}_3$

B

$\mathrm{CO}_2>\mathrm{N}_2 \mathrm{O}_3>\mathrm{B}_2 \mathrm{O}_3>\mathrm{Li}_2 \mathrm{O}>\mathrm{BeO}$

C

$\mathrm{CO}_2>\mathrm{BeO}>\mathrm{Li}_2 \mathrm{O}>\mathrm{B}_2 \mathrm{O}_3>\mathrm{N}_2 \mathrm{O}_3$

D

$\mathrm{N}_2 \mathrm{O}_3>\mathrm{CO}_2>\mathrm{B}_2 \mathrm{O}_3>\mathrm{BeO}>\mathrm{Li}_2 \mathrm{O}$

4
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The change in enthalpy $[\Delta H]$ in $\mathrm{kJ} \mathrm{mol}^{-1}$ for the reaction, $\mathrm{Mg}+2 \mathrm{~F} \longrightarrow \mathrm{MgF}_2$ is

Given, electron affinity of $\mathrm{F}=328 \mathrm{~kJ} \mathrm{~mol}^{-1}$,

IE ${ }_1$ of $\mathrm{Mg}=737 \mathrm{kJmol}^{-1}, \mathrm{IE}_2$ of $\mathrm{Mg}=1451 \mathrm{kJmol}^{-1}$

A

3064

B

876

C

1860

D

1532

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