List of top Questions asked in TS EAMCET- 2025

The positive value of 'a' for which the system of linear homogeneous equations \( x+ay+z=0 \), \( ax+2y-z=0 \), \( 2x+3y+z=0 \) has non-trivial solutions is

Let $\vec{a}=\hat{i}-\hat{j}+\hat{k}$, $\vec{b}=\hat{i}-2\hat{j}-2\hat{k}$, $\vec{c}=6\hat{i}+3\hat{j}-2\hat{k}$ be three vectors. If $\vec{d}$ is a vector perpendicular to both $\vec{a}$, $\vec{b}$ and $|\vec{d}\times\vec{c}|=14$, then $|\vec{d}\cdot\vec{c}|=$

If $A = \begin{pmatrix} 1 & 5 & 2 \\ 4 & 1 & 3 \\ 2 & 6 & 3 \end{pmatrix}$, then $|(\text{Adj A})^{-1}| =$

If $A = \begin{pmatrix} 1 & 2 & 3 \\ 2 & 1 & 1 \\ 1 & 3 & 1 \end{pmatrix}$ and $B = \begin{pmatrix} 2 & 3 & 4 \\ 3 & 2 & 2 \\ 2 & 4 & 2 \end{pmatrix}$, then $\sqrt{|\text{Adj}(AB)|} =$

If the system of linear equations $(\sin\theta)x - y + z = 0$, $x - (\cos\theta)y + z = 0$, $x + y + (\sin\theta)z = 0$ has a non-trivial solution, then the least positive value of $\theta$ is

If the system of simultaneous linear equations $x - 2y + z = 0$, $2x + 3y + z = 6$ and $x + 2y + pz = q$ has infinitely many solutions, then

Consider the following set of reactions.
$\text{C}_6\text{H}_5\text{CN} \xrightarrow{\text{B}} \text{Y} (\text{reacts with } 2,4\text{-DNP}) \xrightarrow{\text{A}} \text{X} (\text{dissolves in dil. } \text{HCl})$
What are A and B respectively?

What are $\text{X}$ and $\text{Y}$ in the following reaction sequence?
$\text{C}_5\text{H}_{12}\text{O} \xrightarrow{\text{Cu}/573 \text{ K}} \text{C}_5\text{H}_{10} \xrightarrow{(\text{i}) \text{O}_3, (\text{ii}) \text{Zn}+\text{H}_2\text{O}} \text{X} + \text{Y}$

An alcohol X ($\text{C}_5\text{H}_{12}\text{O}$) produces turbidity instantly with conc. $\text{HCl}/\text{ZnCl}_2$. Isomer (Y) of $\text{X}$ undergoes dehydration with conc. $\text{H}_2\text{SO}_4$ at $443 \text{ K}$. $\text{X}$ and $\text{Y}$ respectively are

The chemical X is used in the prevention of heart attack. The structure of X is

Amino acid 'X' contains phenolic hydroxy group and amino acid 'Y' contains amide group. 'X' and 'Y' respectively are

The polymer chains are held together by hydrogen bonding in a polymer X. Polymer X is formed from monomers Y and Z. What are Y and Z?

The pair of ions with paramagnetic nature and same number of electrons is

Which of the following statements is not correct?

The number of lone pairs of electrons on the central atom of $\text{XeO}_3, \text{XeOF}_4$ and $\text{XeF}_6$ respectively is

Which of the following gives more number of oxides on reacting with $\text{HCl}$?

Composition of siderite ore is

Observe the following reactions
I. $\text{CO}(\text{g})+\text{H}_2(\text{g}) \xrightarrow{\text{X}} \text{HCHO}(\text{g})$
II. $\text{CO}(\text{g})+3\text{H}_2(\text{g}) \xrightarrow{\text{Y}} \text{CH}_4(\text{g})+\text{H}_2\text{O}(\text{g})$
The catalysts $\text{X}$ and $\text{Y}$ in the above reactions are respectively

$\text{A}\to \text{P}$ is a first order reaction. At $300 \text{ K}$ this reaction was started with $[\text{A}]=0.5 \text{ mol}\text{L}^{-1}$. The rate constant of reaction was $0.125 \text{ min}^{-1}$. The same reaction was started separately with $[\text{A}]=1 \text{ mol}\text{L}^{-1}$ at $300 \text{ K}$. The rate constant (in $\text{min}^{-1}$) now is

At $298 \text{ K}$ the equilibrium constant for the reaction, $\text{M}(\text{s})+2\text{Ag}^+(\text{aq}) \rightleftharpoons \text{M}^{2+}(\text{aq})+2\text{Ag}(\text{s})$ is $10^{15}$. What is the $E_{\text{cell}}^{\circ}$ (in $\text{V}$) for this reaction? ($\frac{2.303 \text{ RT}}{F} = 0.06 \text{ V}$)

A solid mixture weighing $5 \text{ g}$ contains equal number of moles of $\text{Na}_2\text{CO}_3$ and $\text{NaHCO}_3$. This solid mixture was dissolved in $1 \text{ L}$ of water. What is the volume (in $\text{mL}$) of $0.1 \text{ M } \text{HCl}$ required to completely react with this $1 \text{ L}$ mixture solution?

A metal (M), crystallizes in $\text{fcc}$ lattice with edge length of $4.242 \text{ \AA}$. What is the radius of $\text{M}$ atom (in $\text{\AA}$)?

What are X and Y respectively in the following reaction sequence?

'X' is the isomer of $\text{C}_6\text{H}_{14}$. It has four primary carbons and two tertiary carbons. 'X' can be prepared from which of the following reaction?