List of top Questions asked in TS EAMCET

An alkene, \(X\) \((\mathrm{C_5H_{10}})\) exhibits cis/trans isomerism. Bromination of \(X\) followed by reaction with reagent(s) \(Y\) gave the product \(Z\). What are \(Y\) and \(Z\)?

IUPAC names of the following compounds \(X\) and \(Y\) are respectively

The chemical prepared by Solvay's process is \(X\). The chemical prepared by Castner-Kellner process is \(Y\). \(X\) and \(Y\) are respectively

What is the enthalpy change (in kJ mol\(^{-1}\)) for the following reaction? \[ \mathrm{CH_4(g)\rightarrow C(g)+4H(g)} \] Given \[ \Delta_fH^\circ(\mathrm{CH_4})=-74.8\ \text{kJ mol}^{-1}, \] \[ \mathrm{H_2(g)\rightarrow 2H(g)};\qquad \Delta_aH^\circ=435\ \text{kJ mol}^{-1}, \] \[ \mathrm{C(s)\rightarrow C(g)};\qquad \Delta_aH^\circ=716.7\ \text{kJ mol}^{-1}. \]

The pH of \(0.01\) M aqueous aniline solution at \(298\) K is \(8.3\). Its degree of dissociation \((\alpha)\) is \[ (K_b\text{ of aniline}=4\times10^{-10}; \ \text{antilog}(0.7)=5.0; \ \text{antilog}(0.3)=2.0; \ \text{antilog}(0.4)=2.5) \]

In which of the following compounds, the size of manganese is maximum?

At \(T\)(K), the pressure of two ideal gases \(A\) and \(B\) is in the ratio \[ P_A:P_B=2:5. \] At this temperature, their densities are the same. The molar mass ratio \[ (M_A:M_B) \] is

A solution is prepared by reacting \(500\) mL of \(0.2\) M \(\mathrm{KMnO_4}\) with \(500\) mL of \(0.2\) M \(\mathrm{KBr}\) solution in basic medium. What are the concentrations of \(\mathrm{KBr}\) and \(\mathrm{KBrO_3}\) respectively in the resultant solution?

Consider the following \[ \mathrm{HF,\ H_2O,\ BeCl_2,\ CO_2,\ BF_3,\ NF_3,\ CCl_4,\ CHCl_3} \] The number of polar molecules is

How many of the following molecules ions are paramagnetic in nature? \[ \mathrm{N_2,\ O_2,\ F_2,\ NO,\ CO,\ O_2^-,\ O_2^{2-},\ N_2^+,\ NO^+,\ NO^-,\ H_2} \]

Which of the following is an endothermic process? \((g=\text{gas})\)

If a graph is drawn between the binding energy per nucleon and the mass number of nucleus, then the mass number of the nucleus for which the binding energy per nucleon has a maximum value is

Observe the given two statements about \(\alpha\)-particle experiment and Rutherford assumptions. Statement-I: The ratio of atomic radius to its nuclear radius is \(10^5\). Statement-II: In an atom, the majority of the space is vacant. The correct answer is

If the peak voltage of message signal is \(60\%\) less than the peak voltage of the carrier wave, then the modulation index is

The current gain of a common emitter amplifier is \(50\) and its power gain is \(3000\). If the input resistance of the amplifier is \(1200\,\Omega\), then its output resistance is

The work functions of three metals \(A\), \(B\) and \(C\) are respectively \(2.25\), \(2.42\) and \(3.6\) eV. All the three metals are irradiated with light of wavelength \(330\) nm. The kinetic energies of photoelectrons emitted from \(A\), \(B\) and \(C\) are respectively \(E_A\), \(E_B\) and \(E_C\). The correct relationship among \(E_A\), \(E_B\) and \(E_C\) is \[ (h=6.6\times10^{-34}\ \mathrm{Js},\; c=3\times10^8\ \mathrm{ms^{-1}}) \]

If the band gap of a semiconductor is equal to the energy of a photon of wavelength \(620\) nm, then the minimum thermal energy required for the generation of \(8\) electron-hole pairs is nearly

If an electron initially at rest is subjected to a uniform electric field of \(4125\ \mathrm{NC^{-1}}\), then the de Broglie wavelength associated with the electron at time \(t=2\times10^{-9}\) s is \[ (\text{Planck's constant}=6.6\times10^{-34}\ \mathrm{Js}) \]

If the time period of an electron in the ground state of hydrogen atom is \(1.5\times10^{-16}\) s, then the time period of the electron in the third excited state of hydrogen atom is

If the mean life of a radioactive substance is \[ \frac{20}{\ln4} \] minutes, then the ratio of the number of atoms remaining undecayed and the number of atoms decayed of the substance at a time of \(30\) minutes is

When an inductor and a resistor are connected in series to an AC source, the power factor of the circuit is \[ \frac{2}{\sqrt{13}}. \] If the same resistor and a capacitor are connected in series to the same AC source, then the power factor of the circuit is \[ \frac{1}{\sqrt2}. \] If these inductor, capacitor and resistor are connected in series to the same AC source, then the ratio of the resistance and impedance of the LCR circuit is

If the current passing through a coil of self-inductance \(50\) mH having \(50\) turns is \(5\) A, then the magnetic flux linked with the coil (in \(10^{-3}\) Wb) is

The wavelength range of the electromagnetic waves suitable for radar systems used in aircraft navigation is

A bar magnet of magnetic moment \(1.8\ \mathrm{Am^2}\) is free to rotate about a vertical axis passing through its centre at a place where the vertical component of earth's magnetic field is \[ 0.3\times10^{-4}\text{ T} \] and the dip angle is \(45^\circ\). If the magnet at rest in east-west direction is released, then the kinetic energy (in \(\mu\)J) of the magnet when it reaches north-south direction is

If a capacitor is charged by connecting it to a battery, then the ratio of work done by the battery and the energy stored in the capacitor is