AP EAPCET 2025 - 21st May Morning Shift

In which of the following intramolecular H -bonding is absent?

Identify the correct statements from the following
I. Isotopes of an element show different chemical behaviour.
II. Lyman series of lines of hydrogen spectrum appear in UV region.
III. The oscillating electric and magnetic field components ...

When a metal surface is irradiated with light of frequency $x \mathrm{~Hz}$, the kinetic energy of emitted photoelectrons is $z \mathrm{~J}$. When the same metal is irradiated with light of frequency $y \mathrm{~Hz}$, the kinetic energy of ...

The improper functioning of ' $X$ ' results in Addison's disease. Hormone ' $Y$ ' is responsible for the development of secondary female characteristics. ' $X$ ' and ' $Y$ ' are respectively

The incorrect statement about amylose is

Observe the following reactions
I. Sucrose $(a q)+\mathrm{H}_2 \mathrm{O} \xrightarrow{x}$ glucose + fructose
II. Glucose $(a q) \xrightarrow{y}$ ethanol $+\mathrm{CO}_2$
What are $x$ and $y$ respectively?

Arrange the products I, II, III from the following reactions in decreasing order of their acid strength.

Identify the correct set of molecules with zero dipole moment

At $293 \mathrm{~K}, \Delta_r G^{\circ}$ for the following reaction is $165.469 \mathrm{~kJ} \mathrm{~mol}^{-1}$.
\(\frac{3}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{O}_3(\mathrm{~g})\)
What is the equilibrium constant for thi...

The following equilibrium is established at STP.
\(B_2(g) \rightleftharpoons 2 B(g)\)
Atoms of $B$ occupy $20 \%$ of total volume at STP. The total pressure of the system is 1 bar. What is its $K_p$ ? $($ STP volume $=22.7 \mathrm{~L})$

$A \rightarrow$ products, is a first order reaction. The following data is obtained for this reaction at $T(\mathrm{~K})$. The value of $x: y$ is
$$ \begin{array}{cc} \hline \text { Rate }\left(\mathrm{molL}^{-1} \mathrm{~min}^{-1}\right) &...

Which of the following is not an example of antacid?

\(\text { What are } x \text { and } y \text { in the following set of reactions? }\)

Which of the following complexes exhibit geometrical isomerism?
I. $\left[\mathrm{Co}(\mathrm{en})\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right] \mathrm{Cl}$
II. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \mathrm...

What is $E_{\text {cell }}$ (in V) of the following cell at $298 \mathrm{~K} ?$
$$ \begin{aligned} & \left(E_{\mathrm{Zn}^{2+} / \mathrm{Zn}}^{\ominus}=-0.76 \mathrm{~V} ; E_{\mathrm{Ni}^{2+} / \mathrm{Ni}}^{\ominus}=-0.25 \mathrm{~V} ; \fr...

Consider the following.
Assertion (A) : CO is poisonous to living beings.
Reason (R) : CO binds to haemoglobin forming carboxyhaemoglobin, which is less stable than oxygen-haemoglobin complex.
Correct answer is

\(\text { Observe the following reactions }\)
The order of reactivity of $x, y, z$ towards $\mathrm{S}_{\mathrm{N}} 1$ reaction is

When ethyl bromide and $n$-propyl bromide are allowed to react with Na metal in dry ether, the number of different alkanes formed is

$$ \begin{aligned} &\text { Consider the following reaction sequence }\\ &\text { Vinyl benzene } \xrightarrow[\Delta]{\mathrm{KMnO}_4+\mathrm{KOH}} X \xrightarrow[\Delta]{\mathrm{NaOH}+\mathrm{CaO}} Y \end{aligned} $$
$' Y$ ' can also be f...

\(\text { Consider the following sequence of reactions }\)
The incorrect statement about $z$ is

\(\text { What are } x \text { and } y \text { in the following reaction sequence? }\)

At $T(\mathrm{~K})$, the solubility product of AgBr is $4 \times 10^{-13}$. What is its solubility in 0.1 M KBr solution?

\(\text { The IUPAC name of the following compound is }\)

248 g of ethylene glycol $\left(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\right)$ is added to 200 g of water to prepare antifreeze. What is the molality of resultant solution?
$$ (\mathrm{C}=12 \mathrm{u} ; \mathrm{H}=1 \mathrm{u} ; \mathrm{O}...

A solution containing 7.5 g of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-1}$ ) in 1 kg of water freezes at the same temperature as another solution containing 15 g of solute $X$, in the same amount of water. The molar mass of $X\lef...

Kaolinite, a form of clay is the ore of metal $x$ and malachite is the ore of metal $y, x$ and $y$ respectively are

The alloy that contains copper and Zn is $x$ and the one that contains copper and Ni is $y$. What are $x$ and $y$ respectively?

Gas $X$ is obtained in Deacon's process. X on reacting with iodine and water gives

Consider the following -
Statement I : The order of electronegativity of $\mathrm{B}, \mathrm{Al}$, In Tl is \(\mathrm{B}>\mathrm{Tl}>\mathrm{Al}>\mathrm{In}\)
Statement II : Boric acid is a weak protonic acid.
The correct answer is

Which of the following does not exist?

\(\text { Match the following }\)$$ \begin{array}{lllc} \hline & \text { List-I (Atomic number; Z) } & & \text { List-II (Block) } \\ \hline \text { A } & 112 & \text { I } & \text { s } \\ \hline \text { B } & 116 & \text { II } & \text ...

In which polymer preparation, Ziegler- Natta catalyst is used?

The volume (in mL ) of 10 volume $\mathrm{H}_2 \mathrm{O}_2$ solution required to completely react with 200 mL of 0.4 M $\mathrm{KMnO}_4$ solution in acidic medium is

Which of the following statement is incorrect with reference to alkaline earth metals?

Gold crystallises in fcc lattice. The edge length of the unit cell is $4 \mathop {\rm{A}}\limits^{\rm{o}}$. The closest distance between gold atoms is ' $x$ ' $\mathop {\rm{A}}\limits^{\rm{o}}$ and density of gold is ' $y$ ' $\mathrm{g} \ma...

Observe the following
I. 0.0063
II. 132.00
III. 1004
The number of significant figures in I, II and III is respectively.

Consider the following
Statement-I : If the intermolecular forces are stronger than thermal energy, the substance prefers to be in gaseous state.
Statement-II : Among all elements, the total number of elements available as gases at room tem...

Identify the conditions at which van der Waals' equation of state changes to ideal gas equation.

Identify the correct statement from the following
I. Sulphur sol is an example for multi molecular colloid.
II. Starch sol is an example for associated colloid.
III. Artificial rubber is an example for macromolecular colloid.

At 273 K the maximum work done when pressure on 10 g of hydrogen is reduced from 10 atm to 1 atm under isothermal, reversible conditions is
(Assume the gas behaves ideally)
\(\left(R=83 \mathrm{Jk}^{-1} \mathrm{~mol}^{-1}\right)\)

The value of the Rolle's theorem for the function $f(x)=2 \sin x+\sin 2 x$ in the interval $[0, \pi]$ is

If $\alpha$ and $\beta(\alpha>\beta)$ are the multiple roots of the equation $4 x^4+4 x^3-23 x^2-12 x+36=0$, then $2 \alpha-\beta=$

If the function $y=g(x)$ representing the slopes of the tangents drawn to the curve $y=3 x^4-5 x^3-12 x^2+18 x+3$ is strictly increasing, then the domain of $g(x)$ is

The area (in square units) of the triangle formed by the $X$-axis, the tangent and the normal drawn at $(1,1)$ to the curve $x^3+y^3=2 x y$ is

If $(1+x)^n=\sum_{r=0}^n C, x^r$, then the value of $C_0+\left(C_0+C_1\right)+\left(C_0+C_1+C_2\right)+\ldots+ \left(C_0+C_1+C_2+\ldots+C_n\right)$ is

If $x$ is so large that terms containing $x^{-3}, x^{-4}, x^{-5}, \ldots$ can be neglected, then the approximate value of $\left(\frac{3 x-5}{4 x^2+3}\right)^{-1 / 5}$ is

The slope of the non-vertical tangent drawn from the point $(3,4)$ to the circle $x^2+y^2=9$ is

From a point $P$ on the circle $x^2+y^2=4$, two tangents are drawn to the circle $x^2+y^2-6 x-6 y+14=0$. If $A$ and $B$ are the points of contact of those lines, then the locus of the centre of the circle passing through the points $P$, $A$...

If the product of the lengths of the perpendicular drawn from the ends of a diameter of the circle $x^2+y^2=4$ on the line $x+y+1=0$ is maximum, then the two ends of that diameter are

If the acute angle between the circles $S \equiv x^2+y^2+2 k x+4 y-3=0$ and $S^{\prime} \equiv x^2+y^2-4 x+2 k y+9=0$ is $\cos ^{-1}\left(\frac{3}{8}\right)$ and the centre of $S^{\prime}=0$ lies in the first quadrant, then the radical axis...