AP EAPCET 2024 - 22th May Morning Shift | AP EAPCET Year Wise Previous Years Questions

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

If the longest wavelength of spectral line of Paschen series of $\mathrm{Li}^{2+}$ ion spectrum is $x \mathop {\rm{A}}\limits^{\rm{o}}$. Then the longest wavelength (in $\mathop {\rm{A}}\limits^{\rm{o}}$ ) of Lyman series of hydrogen spectrum is

$\frac{12}{7 x}$

$\frac{7 x}{12}$

$\frac{20 x}{27}$

$\frac{27 x}{20}$

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

If $v_0$ is the threshold frequency of a metal $X$, the correct relation between de-Broglie wavelength $(\lambda)$ associated with photoelectron and frequency $(v)$ of the incident radiation is

$\lambda \propto \frac{1}{\sqrt{v-v_0}}$

$\lambda \propto \frac{1}{\left(v-v_0\right)^{1 / 4}}$

$\lambda \propto \frac{1}{\left(v-v_0\right)^{3 / 4}}$

$\lambda \propto \sqrt{v-v_0}$

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

In which of the following sets, elements are not correctly arranged with the property shown in brackets?

$\mathrm{S}>\mathrm{Se}>\mathrm{O}$ (Electron gain enthalpy)

$\mathrm{F}>\mathrm{O}>\mathrm{Cl}$ (Electronegativity)

$\mathrm{Na}>\mathrm{Li}>\mathrm{Al}$ (Metallic radius)

$\mathrm{Na}>\mathrm{K}>\mathrm{Ba}$ (Metallic nature)

AP EAPCET 2024 - 22th May Morning Shift

MCQ (Single Correct Answer)

-0

In which of the following, there is no change in hybridisation of the central atom ?

$\mathrm{NH}_3+\mathrm{H}^{+} \rightarrow \mathrm{NH}_4^{+}$

$\mathrm{BF}_3+\mathrm{F}^{-} \rightarrow \mathrm{BF}_4^{-}$

$\mathrm{PCl}_3+\mathrm{Cl}_2 \rightarrow \mathrm{PCl}_5$

$\mathrm{ClF}_3+\mathrm{F}_2 \rightarrow \mathrm{ClF}_5$