AP EAPCET 2023 - 15th May Morning Shift

The number of products obtained in the following reaction is

What are ' $X$ ' and ' $Y$ ' respectively in the following reaction?
$$ \mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}+\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3 \xrightarrow[293 \mathrm{~K}]{\mathrm{OH}^{-}} \underset{\text { Major }}{X} \xrightarr...

The minimum number of quantum numbers required to specify an orbital in an atom is

Vijaywada FM radio station broadcasts at frequency of 103.4 MHz . The wavelength of the corresponding radio wave (in m ) is

Given below are two statements
Assertion (A) Hydrolysis of DNA does not form equal number of $A$ and $T, G$ and $C$.
Reason (R) In DNA, adenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine.
The correct an...

\(\text { The structure of Gly-Ala is }\)

Which of the following is used in perfumery?

If the bond order in $C_2$ is ' $x^{\prime}$ then the bond order in $B_2$ and $\mathrm{O}_2$, respectively are

Identify incorrectly matched set from the following.

At $T(\mathrm{~K})$, the equilibrium constant for $A(g) \rightleftharpoons B(g)$ is $10^{-2}$. If rate of forward reaction is $0.025 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$. The rate of backward reaction (in $\mathrm{mol} \mathrm{L...

One mole $\mathrm{H}_2 \mathrm{O}(g)$ and one mole $\mathrm{CO}(g)$ are taken in 1 L flask and heated to 725 K . At equilibrium, $40 \%$ (by mass) of water reacted with $\mathrm{CO}(g)$ as follows
$$ \mathrm{H}_2 \mathrm{O}(g)+\mathrm{CO}(g...

For the reaction $A+B \rightarrow C$, the following data were obtained
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\(\text { The group present in prontosil is }\)

Arrange the following in increasing order of their boiling points.
[I.] N-ethylethanamine
[II.] Butanamine
[III.] N,N-dimethyl ethanamine

Given below are two statements.
Assertion (A) All Cu (II) halides are known except the iodide.
Reason (R) $\mathrm{Cu}^{2+}$ oxidises $\mathrm{I}^{-}$to $\mathrm{I}_2$.

From the list given below, the number of lanthanides which exhibit +4 state in their oxides is Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy

The conductivity of a solution containing 2.08 g of anhydrous barium chloride in 200 mL solution is $6 \times 10^{-3} \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}$. The molar conductivity of the solution (in $\mathrm{ohm}^{-1} \mathrm{~cm}^2 \mathrm...

$$ \begin{aligned} &\text { Which is the correct option for the following reaction? }\\ &2 \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br} \xrightarrow{2 \mathrm{Na} / \text { Dry ether }} \text { ? } \end{aligned} $$

\(\text { Which of the following molecule is not aromatic? }\)

In the Kolbe electrolysis of sodium propanoate, the products $X$ and $Y$ are formed at respected electrodes. What are $X$ and $Y$ ?

The $\mathrm{O}-\mathrm{H}$ bond length in $\mathrm{H}_2 \mathrm{O}$ in gas phase is

The optically inactive compound from the following is

The molarity of one molal glucose solution having density of $1.2 \mathrm{~g} / \mathrm{mL}$ is

How many of the following can be purified by using zone refining method?
Ni, B, Ti, In, Ge, Mn, Ag, Si, Ga

\(\text { Match the following. }\)
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Choose the acidic oxide from the following.

For ozone molecule consider the following.
It is a linear molecule with bond angle $180^{\circ}$.
It is an angular molecule with bond angle $117^{\circ}$.
The bond lengths of both $\mathrm{O}-\mathrm{O}$ bonds are same.
With respect to oxyg...

Consider the following two statements.
Statement I Among $\mathrm{Mg}, \mathrm{Al}, \mathrm{Mg}^{2+}, \mathrm{Al}^{3+}$ the one having smallest size is $\mathrm{Al}^{3+}$.
Statement II Eu is having exceptionally high atomic radii among lant...

Identify the pair of elements with the highest and lowest electronegativity respectively

\(\text { Monomers of nylon 2-nylon } 6 \text { are }\)

Observe the following reaction,
\(\mathrm{Cl}_2(g)+2 \mathrm{OH}^{-}(a q) \longrightarrow \mathrm{ClO}^{-}(a q)+\mathrm{Cl}^{-}(a q)+\mathrm{H}_2 \mathrm{O}(l)\)
Identify the correct statements about this reaction,
[I.] $\mathrm{Cl}_2(g)$...

Which of the following alloys are correctly matched with their uses?
$\mathrm{Li} / \mathrm{Mg}$ Armour plates
$\mathrm{Cu} / \mathrm{Be}$ High strength springs
$\mathrm{Mg} / \mathrm{Al}$ Aircraft construction

An example for network solid is

20 mL of 0.1 M HCl is added to the 30 mL of 0.1 M NaOH . To this solution extra 50 mL of water was added. What is the molarity of the final solution formed?

An ideal gas $(X)$ present in a vessel of volume $V \mathrm{~L}$ exerted a pressure of 16.4 atm at 200 K . What is its concentration in $\mathrm{mol} \mathrm{L}^{-1}$ ?
(Given, $R=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~...

A 100 L cylinder containing $\mathrm{H}_2$ exerted a pressure of 4 atm at 300 K . It was accidentally opened and some $\mathrm{H}_2$ was escaped. When it was closed, it exerted a pressure of 3 atm at 300 K . The number of moles of $\mathrm{...

The correct statements about zeolites are
They are good shape selective catalysts.
They contain Al-O-Si framework.
They are not found in nature.
They are used as catalysts for cracking hydrocarbons, in petrochemical industry.

Which of the following is not the application of adsorption?

If the standard enthalpy change $\left(\Delta_r H^{-}\right)$for a certain reaction at 298 K and constant pressure $-1860 \mathrm{~kJ} \mathrm{~mol}^{-1}$, the standard entropy change $\left(\Delta_{\text {sys }} \Omega^{\circ}\right)$ of t...

If the standard enthalpy change $\left(\Delta_r H^{\circ}\right)$ for reaction $\mathrm{H}_2(\mathrm{~g})+\mathrm{Br}_2(l) \longrightarrow 2 \mathrm{HBr}(\mathrm{g})$ is -72.8 kJ , the standard enthalpy of formation $\left(\Delta_f H^{\circ...

If $A=\left\{9 x \geq x^2+20\right\}$ and $f: A \rightarrow R$ is defined by $f(x)=2 x^3-15 x^2+36 x-48$, then the maximum value of $f(x)$ is

Let $f(x)$ be a differentiable function, $A(0, \alpha)$ and $B(8, \beta)$ be two points on the curve $y=f(x)$. Given $f(0)=2$ and $f^{\prime}(4)=\frac{-3}{4}$. If the chord $A B$ of the curve is parallel to the tangent drawn at the point $(...

If $f(x)=\sqrt{x+\sin x}$, then all the points of the set $\left\{(x, f(x)) / f^{\prime}(x)=0\right\}$ lie on

If $f(x)$ is a differentiable function, $f^{\prime}(x) \geq 5 \forall x \in[2,6]$, $f(2)=4$ and $f(3)=15$, then a possible value of $f(6)$

If the tangent drawn to the curve $y=x^3-a x^2+x+1$ at each point $x \in R$, is inclined at an acute angle with the positive direction of $X$-axis, then the set of all possible values of ' $a$ ' is

The number of points on the curve $y=2 t^2+3 t-5$ and $x=t^3-4 t^2-3 t$ such that the normals drawn at them on the curve are parallel to $X$-axis is

The area (in sq units) bounded by the curves $x^2=9 y$, $(x-6)^2=9 y$ and the $X$-axis is

If $(2-5 x)^{\frac{-1}{5}}=a_0+a_1 x+a_2 x^2+\ldots$, then $\frac{a_1}{a_2}=$

If $C_j$ stands for ${ }^n C_j$, then
\(\frac{C_1}{C_0}+\frac{2 \times C_2}{C_1}+\frac{3 \times C_3}{C_2}+\ldots+\frac{n \times C_n}{C_{n-1}}=\)

If the coordinates of point of contact of the circles $x^2+y^2-4 x+8 y+4=0$ and $x^2+y^2+2 x=0$ is $(a, b)$, then $a+2 b=$