List of top Questions asked in AP EAMCET

In the following diagram, the work done in moving a point charge from point P to point A, B and C are \( W_A, W_B, W_C \) respectively. Then (A, B, C are points on semicircle and point charge \( q \) is at the centre of semicircle)

Four condensers each of capacitance 8 muF are joined as shown in the figure. The equivalent capacitance between the points A and B will be

The resistance between points A and C in the given network is

A wire shaped in a regular hexagon of side 2 cm carries a current of 4 A. The magnetic field at the centre of the hexagon is.

The domain in ferromagnetic material is in the form of a cube of side 2 mum. Number of atoms in that domain is \(9 \times 10^{10}\) and each atom has a dipole movement of \(9 \times 10^{-24} \, \text{Am}^2\). The magnetisation of the domain is (approximately).

When a signal is applied to the input of a transistor it was found that output signal is phase-shifted by 180\(^\circ\). The transistor configuration is

In which of the following sets of molecules, the central atoms of molecules have same hybridisation?

The correct increasing order of number of lone pair of electrons on the central atom of \(SnCl_2\), \(XeF_2\),\( CIF_3\) and \( SO_3\) is

The following graph is obtained for a gas at different temperatures (T1, T2, T3). What is the correct order of temperature? (x-axis = velocity; y-axis = number of molecules)

Observe the following stoichiometric equation
P₄ + 3 OH^- + 3 H₂O → PH₃ + 3 OH^-.
What is the conjugate acid of OH^- ?

A thermodynamic process (B \(\rightarrow\) E) was completed as shown below. The work done is equal to area under the limits.

In a one litre flask, 2 moles of \( A_2 \) was heated to \( T(K) \) and the above equilibrium is reached. The concentrations at equilibrium of \( A_2 \) and \( B_2 \) are \( C_1(A_2) \) and \( C_2(B_2) \) respectively. Now, one mole of \( A_2 \) was added to flask and heated to \( T(K) \) to establish the equilibrium again. The concentrations of \( A_2 \) and \( B_2 \) are \( C_3(A_2) \) and \( C_4(B_2) \) respectively. What is the value of \( C_3(A_2) \) in mol L\(^{-1}\)?

The correct statements among the following are:

i. Saline hydrides produce \( \text{H}_2 \) gas when reacted with water.
ii. Presently ~77% of the industrial dihydrogen is produced from coal.
iii. Commercially marketed \( \text{H}_2 \text{O}_2 \) contains 3% \( \text{H}_2 \text{O}_2 \).

Identify the correct statements from the following:

Oxidation of NaBH_4 with \(I_2\) gives \(B_2H_6\)
(ii) \(B_2H_6\) burns in oxygen and releases an enormous amount of energy
(iii) \(B_2H_6\) on hydrolysis gives a tribasic acid

The first order reaction \( A(g) \rightarrow B(g) + 2C(g) \) occurs at 25\(^\circ\)C. After 24 minutes the ratio of the concentration of products to the concentration of the reactant is 1:3. What is the half-life of the reaction (in min)? (log 1.11 = 0.046)

Which of the following has maximum coagulating power in the coagulation of positively charged sol?

Identify the autocatalytic reaction from the following:

The anode and cathode used in electrolytic refining of copper respectively are:

The spin-only magnetic moments of the complexes \([Mn(CN)_6]^{3-}\) and \([Co(C_2O_4)_3]^{3-}\) are respectively:

PHBV is a biodegradable polymer of two monomers X and Y. X and Y respectively are:

The carbohydrate which does not react with ammoniacal \( AgNO_3 \) solution is:

The structure given below represents: