List of top Questions asked in TS EAMCET- 2026

The number of cis/trans isomers possible for alkenes \(\mathrm{C_5H_{10}}\) and \(\mathrm{C_4H_8}\) respectively is

Observe the following reactions \[ \mathrm{Isobutene} \xrightarrow[\mathrm{H^+}]{\mathrm{H_2O}} X \] \[ \mathrm{Isobutane} \xrightarrow{\mathrm{KMnO_4}} Y \] The correct statement regarding \(X\) and \(Y\) is

Propene on reaction with reagent (A) gave \(X\) as major product. \(X\) undergoes Wurtz reaction to give \(Y\). In the presence of (B) at \(773\,\mathrm{K}\) and \(10{-}20\,\mathrm{atm}\) pressure, \(Y\) undergoes aromatization. It also undergoes isomerisation in the presence of (C). What are \(A\), \(B\), \(C\) respectively?

In the formation of photochemical smog, two oxides of nitrogen are significantly formed. The oxidation states of nitrogen in these oxides are respectively

The number of compounds present in Portland cement from the following is \[ \mathrm{MgO,\ CaO,\ MgCO_3,\ MgCl_2,\ Al_2O_3,\ SO_3,\ SiO_2,\ CaSO_4,\ Fe_2O_3,\ CaCl_2} \]

Given below are two statements Statement--I: The number of water molecules associated with \(\mathrm{LiCl}\), \(\mathrm{NaCl}\), \(\mathrm{CaCl_2}\) are \(2,\ 2,\ 6\) respectively. Statement--II: Both \(\mathrm{LiCl}\) and \(\mathrm{MgCl_2}\) are soluble in ethanol. The correct answer is

A compound \(X\) reacts with \(\mathrm{LiAlH_4}\) in diethyl ether and gives a colourless, highly toxic gas. This gas when heated with \(\mathrm{NH_3}\) gives inorganic benzene. \(X\) is \[ \begin{aligned} \text{I. } & \text{Electron deficient molecule} \text{II. } & \text{Trigonal planar molecule} \text{III. } & \text{On hydrolysis forms octahedral ion} \end{aligned} \] Correct answer is

The oxide of \(14^{\text{th}}\) group element which only exists at high temperature is

In a system, \(x\,\mathrm{J}\) of heat is absorbed and \(y\,\mathrm{J}\) of work is done by the system. What is \(\Delta U\) (in kJ)?

At \(300\,\mathrm{K}\), the diffusion rate of one mole of an ideal gas is \(0.082\,\mathrm{L\,s^{-1}}\). What is the pressure (in atm) of this gas which can diffuse in \(100\,\mathrm{s}\)? \[ \left(R=0.082\,\mathrm{L\,atm\,mol^{-1}\,K^{-1}}\right) \]

When \(160\,\mathrm{g}\) of methane was burnt in air at STP, \(5\%\) of it remained. At \(273\,\mathrm{K}\) and \(1\,\mathrm{bar}\) pressure, air contains \(20\%\) of \(\mathrm{O_2}\) by volume. What is the approximate volume (in L) of air consumed? \[ \text{(At STP molar volume }=22.71\,\mathrm{L}) \]

In acid medium, \(\mathrm{H_2O_2}\) reacts with aqueous \(\mathrm{KMnO_4}\) to form \(\mathrm{Mn^{2+}}\), \(\mathrm{H_2O}\) and \(X\). In basic medium, \(\mathrm{H_2O_2}\) reacts with aqueous \(\mathrm{KMnO_4}\) to form \(\mathrm{MnO_2}\), \(\mathrm{H_2O}\), \(\mathrm{OH^-}\) and \(Y\). What are \(X\) and \(Y\) respectively?

Given below are two statements Statement--I: Conjugate base of hypochlorous acid is \(\mathrm{OCl^-}\) Statement--II: The value of \(K_w\) does not depend on temperature The correct answer is

A metal was irradiated separately with radiation of wavelength (a) \(400\,\mathrm{nm}\), (b) \(500\,\mathrm{nm}\) and (c) \(600\,\mathrm{nm}\) respectively. Identify the wavelength(s) corresponding to which photoelectrons are emitted from the surface of that metal. \[ \left(\text{Work function}=2.25\,\mathrm{eV},\; h=6.6\times10^{-34}\,\mathrm{J\,s},\; c=3\times10^8\,\mathrm{m\,s^{-1}},\; 1\,\mathrm{eV}=1.6\times10^{-19}\,\mathrm{J}\right) \]

In which of the following compounds are correctly arranged in the increasing order of their covalent character?

Beryllium is diagonally related to the element \(X\) and lithium is diagonally related to the element \(Y\). The nature of oxides of \(X\) and \(Y\) are respectively

The angular momentum of electron in H atom in \(n_x\) state is \(1.051\times10^{-34}\,\mathrm{J\,s}\). The de Broglie wavelength of electron in this \(n_x\) state is \[ (h=6.6\times10^{-34}\,\mathrm{J\,s};\ \pi=3.14) \]

If the height of a transmitting antenna is \(45\,\mathrm{m}\) and the height of the receiving antenna is \(H\), then the maximum line-of-sight distance between the two antennas is \(1\%\) of the radius of the earth. If the radius of the earth is \(6400\,\mathrm{km}\), then the value of \(H\) is

In hydrogen spectrum, if the longest wavelength of the spectral line in Balmer series is \(\lambda\), then the shortest wavelength of the spectral line in Paschen series is

The ratio of the energy released when \(2.5\times10^{21}\) atoms of uranium undergo nuclear fission and the energy equivalent of \(2\,\mathrm{mg}\) mass of uranium is nearly \[ \text{(Average energy released per fission of uranium nucleus }=200\,\mathrm{MeV}) \]

If the barrier potential of the diode shown in the given circuit is \(0.7\,\mathrm{V}\), then the value of the resistance \(R\) is

In a time of \(10\) minutes, the activity of a radioactive sample becomes \[ \frac{1}{\sqrt5} \] times its initial activity. After \(10\) more minutes, if its activity becomes \(K\) times the initial activity, the value of \(K\) is

When monochromatic photons incident on a photosensitive material of cut-off wavelength \(496\,\mathrm{nm}\), photoelectrons are emitted with a maximum velocity of \(8\times10^5\,\mathrm{m\,s^{-1}}\). Then the energy of the incident photons is nearly \[ \left(m_e=9\times10^{-31}\,\mathrm{kg},\; e=1.6\times10^{-19}\,\mathrm{C}\right) \]

In a common emitter amplifier, when the base to emitter voltage changes by \(20\,\mathrm{mV}\), the change in collector current is \(3\,\mathrm{mA}\). If the output resistance is \(4\,\mathrm{k\Omega}\), then the voltage gain of the amplifier is

For a coil rotating in a uniform magnetic field, the phase difference between the magnetic flux linked with the coil and the current induced in it is