AP EAPCET 2025 - 22nd May Evening Shift

\(\text { Match the following }\)

The correct answer is

Consider the reaction sequence
$$ \text { Dimethyl ketone } \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}]{\text { (i) } \mathrm{CH}_3 \mathrm{MgCl}} X \xrightarrow[\text { (ii) } \mathrm{CH}_3 \mathrm{Br}]{\text { (i) } \mathrm{Na}} ...

The difference between the radii of 3rd and 2nd orbit of H -atom is $x \mathrm{pm}$. The difference between the radii of 4th and 3rd orbit of $\mathrm{Li}^{2+}$ ion is $y$ pm. $y: x$ is equal to

The de-Broglie wavelength of an electron in the third Bohr orbit of H -atom is

Consider the following.
Statement I : Lactose is composed of $\alpha$ - $D$-glucose and $\beta$-D-glucose.
Statement II : Lactose is a reducing sugar.

\(\text { Match the following. }\)
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What are $X, Y, Z$ in the following reaction sequence?
But-2-ene $\xrightarrow{X}$ Ethanoic acid $\xrightarrow{Y}$ Ethanoyl chloride $\xrightarrow[\text { Anhy. } \mathrm{AlCl}_3]{\text { Benzene }} Z$

What are $X$ and $Y$ respectively in the following set of reactions?

How many of the following molecules have two lone pairs of electrons on central atom?
$\mathrm{SF}_6, \mathrm{BF}_3, \mathrm{ClF}_3, \mathrm{PCl}_5, \mathrm{BrF}_5, \mathrm{XeF}_4, \mathrm{H}_2 \mathrm{O}, \mathrm{SF}_4$

The pair of molecules / ions with the same bond order value is

At $T(\mathrm{~K})$, the following gaseous equilibrium is established.
\(W+X \rightleftharpoons Y+Z\)
The initial concentration of $W$ is two times to the initial concentration of $X$. The system is heated to $T(\mathrm{~K})$ to establish...

In a first order reaction, the concentration of the reactant is reduced to $1 / 8$ of the initial concentration in 75 minutes. The $t_{1 / 2}$ of the reaction (in minutes) is $(\log 2=0.30, \log 3=0.47, \log 4=0.60)$

\(\text { The synthetic detergents of the following are }\)
B. $\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{10} \mathrm{CH}_2 \mathrm{OSO}_3 \mathrm{Na}$
C. $\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15} \mathrm{~N}\left(\mathrm{CH}_3\right)_...

\(\text { In the given reaction sequence conversion of } Y \text { to } Z \text { is }\)

What are $X$ and $Y$ respectively in the following reaction sequence?
$$ \mathrm{C}_6 \mathrm{H}_5 \mathrm{~N}_2^{+} X^{-} \xrightarrow{\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}} X \xrightarrow[\text { anhy. } \mathrm{AlCl}_3]{\mathrm{CO}, \mat...

In $\mathrm{Fe}_x\left[\mathrm{Fe}_y(\mathrm{CN})_6\right]_3, x, y$ respectively, are

The resistance of a conductivity cell filled with 0.1 M KCl solution is $100 \Omega$. If the resistance of the same cell when filled with 0.2 M KCl solution is $520 \Omega$, the molar conductivity of 0.02 M solution (in $\mathrm{S} \mathrm{...

For which of the following the $E^{\ominus}\left(M^{3+} / M^{2+}\right)$ is negative?

Among the following compounds, which one is not responsible for the depletion of ozone layer?

The preferred reagent for the preparation of pure alkyl chloride from alcohol is

4 mL of ' $X$ volume' $\mathrm{H}_2 \mathrm{O}_2$ on heating gives 80 mL of oxygen at STP. The value of $X$ is

Compound ' $X$ ' is prepared commercially by the electrolysis of brine solution.
Which of the following is not the use of ' $X$ '?

At $25^{\circ} \mathrm{C}, K_a$ of formic acid is $1.8 \times 10^{-4}$. What is the $K_b$ of $\mathrm{HCOO}^{-}$?

1.95 g of non-volatile and non-electrolyte solute dissolved in 100 g of benzene lowered the freezing point of it by 0.64 K .
The molar mass of the solute (in $\mathrm{g} \mathrm{mol}^{-1}$ )
$$ \left(K_f\left(\mathrm{C}_6 \mathrm{H}_6\right...

At $298 \mathrm{~K}, 0.714$ moles of liquid $A$ is dissolved in 5.555 moles of liquid $B$. The vapour pressure of the resultant solution is 475 torr. The vapour pressure of pure liquid $A$ at the same temperature is 280.7 torr. What is the ...

Which of the following is used as froth stabilizer in froth floatation process?

Consider the following.
Statement I : $ \mathrm{Al}_2 \mathrm{O}_3$ is amphoteric in nature.
Statement II : Tl2 $\mathrm{O}_3$ is more basic than $\mathrm{Ga}_2 \mathrm{O}_3$. The correct answer is

White phosphorus on heating with concentrated NaOH solution in an inert atmosphere of $\mathrm{CO}_2$ gives a salt ' $X$ ' and gas ' $Y$ '. The oxidation state of central atom in $X$ and $Y$ is respectively

The correct order of the non-metallic character among the elements $\mathrm{B}, \mathrm{C}, \mathrm{N}, \mathrm{F}$ and Si is

Identify the incorrect order against the stated property.

The correct statement regarding $X$ and $Y$ in the following set of reactions is

Which method is used to purify liquids having very high boiling points and liquids which decompose at or below their boiling point?

An element (atomic weight $=250 \mathrm{u}$ ) crystallises in a simple cubic lattice. If the density of the unit cell is $7.2 \mathrm{~g} \mathrm{~cm}^{-3}$. What is the radius (in $\mathop {\rm{A}}\limits^{\rm{o}}$ ) of the atom of the ele...

Consider the following
(A) 0.0025
(B) 500.0
(C) 2.0034
Number of significant figures in $A, B$ and $C$ respectively, are

At what temperature (in K ) the rms velocity of $\mathrm{SO}_2$ molecules is equal to rms velocity of $\mathrm{O}_2$ molecules at $27^{\circ} \mathrm{C}$ ?

For one mole of an ideal gas an isochore is obtained. The slope of the isochore is $0.082 \mathrm{~atm} \mathrm{~K}^{-1}$. What will be its pressure (in atm) when the temperature is $12.2 \mathrm{~K} ?\left(R=0.082 \mathrm{~L} \mathrm{~atm}...

In a colloidal solution, both the dispersed phase and dispersion medium are in liquid phase. What is the type of colloid?

The equation which represents Freundlich adsorption isotherm is ( $x=$ amount of gas, $m=$ mass of solid)

Consider the following reaction
\(A(g)+3 B(g) \longrightarrow 2 C(g) ; \Delta H^{\ominus}=-24 \mathrm{~kJ}\)
At $25^{\circ} \mathrm{C}$, if $\Delta G^{\ominus}$ of the reaction is -9 kJ , the standard entropy change (in $\mathrm{JK}^{-1}$...

One mole of $\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}(l)$ was completely burnt in oxygen to form $\mathrm{CO}_2(g)$ and $\mathrm{H}_2 \mathrm{O}(l)$. The standard enthalpy of formation $\left(\Delta_f H^{\ominus}\right)$ of $\mathrm{C}_2 \math...

If the tangent drawn at the point $\left(x_1, y_1\right), x_1, y_1 \in N$ on the curve $y=x^4-2 x^3+x^2+5 x$ passes through origin, then $x_1+y_1=$

Which one of the following functions is monotonically increasing in its domain?

If $\beta$ is an angle between the normals drawn to the curve $x^2+3 y^2=9$ at the points $(3 \cos \theta, \sqrt{3} \sin \theta)$ and $(-3 \sin \theta, \sqrt{3} \cos \theta), \theta \in\left(0, \frac{\pi}{2}\right)$, then

If the area of a right-angle triangle with hypotenuse 5 is maximum, then its perimeter is

The terms containing $x^r y^s$ (for certain $r$ and $s$ ) are present in both the expansions of $\left(x+y^2\right)^{13}$ and $\left(x^2+y\right)^{14}$. If $\alpha$ is the number of such terms, then the $\operatorname{sum} \alpha \sum_{r, s...

The coefficient of $x^3$ in the power series expansion of $\frac{1+4 x-3 x^2}{(1+3 x)^3}$ is

A circle passing through the point $(1,0)$ makes an intercept of length 4 units on $X$-axis and an intercept of length $2 \sqrt{11}$ units on $Y$-axis. If the centre of the circle lies in the fourth quadrant, then the radius of the circle i...

If $\left(\frac{1}{10}, \frac{-1}{5}\right)$ is the inverse point of a point $(-1,2)$ with respect to the circle $x^2+y^2-2 x+4 y+c=0$ then $c=$

If the equation of the circle lying in the first quadrant, touching both the coordinate axes and the line $\frac{x}{3}+\frac{y}{4}=1$ is $(x-c)^2+(y-c)^2=c^2$, then $c=$

If the point of contact of the circles $x^2+y^2-6 x-4 y+9=0$ and $x^2+y^2+2 x+2 y-7=0$ is $(\alpha, \beta)$, then $7 \beta=$