List of top Questions asked in TS EAMCET- 2026

Match the extra element present in the organic compound with reagent used for its detection.

Observe the reaction set and identify A and D.

In winter, polar stratospheric clouds formed over Antarctica provide surface on which compound X responsible for depletion of ozone is formed. What is X?

Which of the following is not the correct statement about group 1 elements?

Which of the following statements are correct? I. Liquid sodium metal is used as coolant in fast breeder nuclear reactor II. LiCl is deliquescent III. LiF and CsI have low solubility in water

Which of the following represents the water-gas shift reaction?

The following equilibrium is established at 1100 K in a closed V L flask: \[ C(s)+CO_{2}(g)\rightleftharpoons2CO(g) \] The pressure of equilibrium mixture is 1 atm. Among the gaseous compounds, CO has 84% by mass. $K_c$ of this reaction is (approximately) ($R=0.082~L~atm~mol^{-1}K^{-1}$). Assume that CO and $CO_2$ are ideal gases.

The $\Delta_f\text{H}^\ominus$ of $\text{BaCO}_3\text{(s)}$, BaO(s) and $\text{CO}_2\text{(g)}$ is respectively $-1216.3$, $-553.5$ and $-393.5\text{ kJ mol}^{-1}$. What is the value of $x$ (in $\text{kJ mol}^{-1}$) in the following reaction? \[ \text{BaCO}_3\text{(s)} \xrightarrow{\Delta} \text{BaO(s)}+\text{CO}_2\text{(g)}-x \]

The $\Delta_f\text{H}^\ominus$ of $\text{BaCO}_3\text{(s)}$, BaO(s) and $\text{CO}_2\text{(g)}$ is respectively $-1216.3$, $-553.5$ and $-393.5\text{ kJ mol}^{-1}$. What is the value of $x$ (in $\text{kJ mol}^{-1}$) in the following reaction? \[ \text{BaCO}_3\text{(s)} \xrightarrow{\Delta} \text{BaO(s)}+\text{CO}_2\text{(g)}-x \]

$\text{KMnO}_4$ oxidizes $\text{M}^{2+}$ to $\text{M}^{4+}$ in acid medium. $500\text{ mL}$ of $0.02\text{M}$ $\text{M}^{2+}$ solution requires $500\text{ mL}$ of $x\text{ M}$ $\text{MnO}_4^-$ solution for complete oxidation. The value of $x$ is:

The element with atomic number 114 has outer shell electron configuration as that of element 'X'. What is X?

Consider the following oxides: $\text{SO}_2$, $\text{P}_2\text{O}_5$, $\text{SO}_3$, $\text{Al}_2\text{O}_3$, $\text{K}_2\text{O}$, MgO. The most acidic and most basic oxides are respectively:

The difference in bond angles between $\text{SO}_2$ and $\text{H}_2\text{O}$ is:

In H atom, electron is present in $n_x$ state. The angular momentum of this electron is $1.051 \times 10^{-34}\text{ Js}$. What is the energy (in J) required to excite this electron from $n_x$ state to $(n_x+1)$ state? ($h = 6.6 \times 10^{-34}\text{ Js}$; $\pi = 3.14$)

A gaseous mixture contains $\text{H}_2$ and $\text{O}_2$. The pressure of the mixture is $1\text{ bar}$. The weight percentage of $\text{O}_2$ is 80. The ratio of partial pressures of $\text{H}_2$ and $\text{O}_2$ is:

$\text{BF}_3$ reacts with $\text{NH}_3$ in 1:1 ratio and gives 'X'. The hybridization and geometry around B and N atoms in 'X' respectively are:

If A, B and C represent the power gain, base resistance and collector resistance respectively of a transistor connected in common emitter configuration, then the common emitter current amplification factor is:

If the radius of $_{13}\text{Al}^{27}$ nucleus is $3.6\text{ fm}$, then the number of neutrons in a nucleus of atomic number $29$ and radius $4.8\text{ fm}$ is:

If the nuclear force between a proton and a neutron is attractive, then the distance between them can be:

In hydrogen atom, electron is present in $n_x$ state. The energy of Lyman spectral line of hydrogen spectrum originated from $n_x$ state is $1.635 \times 10^{-18}\text{ J}$. What is the approximate energy (in J) required to excite this electron from $n_x$ state to $(n_x+1)$ state?

The electron and hole concentrations in a semiconductor are $5 \times 10^{18}\text{ m}^{-3}$ and $8 \times 10^{19}\text{ m}^{-3}$ respectively. If the mobilities of the electron and hole are $0.24\text{ m}^2\text{V}^{-1}\text{s}^{-1}$ and $0.01\text{ m}^2\text{V}^{-1}\text{s}^{-1}$ respectively, then the conductivity of the semiconductor is:

If the length of a linear antenna is increased by $60\%$ and the wavelength of the signal is decreased by $20\%$, then the percentage increase in the effective power radiated by the antenna is:

The magnetic field at a point A on the axis of a short bar magnet is $1500\%$ more than the magnetic field at a point B on the normal bisector of the magnet. If the distance of point A from the centre of the magnet is $18\text{ cm}$, then the distance of point B from the centre of the magnet is:

If a plane electromagnetic wave of intensity $9 \times 10^5\text{ W}\cdot\text{m}^{-2}$ incidents normally on a perfectly absorbing surface of area $2\text{ m}^2$ for a time of $180\text{ s}$, then the average force exerted by the electromagnetic wave on the surface during this time is:

If the wavelength of a spectral line in the Balmer series of hydrogen spectrum is $\frac{7.2}{R}$, then the ratio of the radii of the higher and lower orbits between which the transition of electron takes place is ($R$ - Rydberg constant):