List of top Questions asked in AP EAPCET

A reverse biased zener diode when operated in the breakdown region works as

The vapors of 1 g of an element occupy 2.5625 L exerting a pressure of 0.5 atm at 1000 K. What is the molar mass (in $\text{g mol}^{-1}$) of the element? (Assume vapors follow ideal gas equation. Given $R = 0.082 \text{ L atm mol}^{-1} \text{K}^{-1}$)

Which of the following ions has [Xe] 4f$^7$ 6s$^0$ as outer electronic configuration?

If a straight line is equally inclined at an angle $ \theta $ with all the three coordinate axes, then $ \tan \theta =$

In the given pressure ($ P $) - absolute temperature ($ T $) graph of an ideal gas, the relation between volumes $ V_1, V_2, V_3, $ and $ V_4 $ is:

The de Broglie wavelength of a charged particle accelerated through a potential difference $ V $ is $ \lambda $. If the potential difference is increased by 21%, the de Broglie wavelength of the charged particle is:

In a $ A_xB_y $ crystal structure, $ A^{+y} $ ions occupy all the tetrahedral voids and $ B^{-x} $ ions make BCC unit cell. What is the formula of the compound?

A block A of mass 1.6 kg is executing SHM with amplitude of 10 cm. A block B of mass 0.9 kg is kept on A. When A passes through its equilibrium, the amplitude of oscillation of the system of block A and B is

If $\Delta Q$ is the heat supplied and $\Delta W$ is the work done by the gas at constant pressure, then the ratio $\dfrac{\Delta Q}{\Delta W}$ is ($\gamma$ = specific heat ratio)

The correct equation for $K_c$ for the following reaction is:
A(l) + B(g) ⇌ C(g)

The correct increasing order for the wavelengths of absorption in the visible region for the following Co$^{3+}$ complexes is:
(i) [Co(NH$_3$)$_6$]$^{3+}$
(ii) [Co(H$_2$O)$_6$]$^{3+}$
(iii) [Co(en)$_3$]$^{3+}$

If $ \cos(\theta - \alpha), \cos \theta $ and $ \cos(\theta + \alpha) $ are in harmonic progression, then $ 2 \tan^2 \theta = $

If two angles $ \alpha, \beta $ are such that $ 0<\alpha, \beta<\frac{\pi}{4} $, $ \sqrt{1 + \cos 2\alpha} = \frac{3}{\sqrt{5}} $ and $ \frac{\sqrt{1 - \cos 2\beta}}{\sqrt{1 + \cos 2\beta}} = \frac{1}{7} $, then $ (2\alpha + \beta) = $

The locus of the poles of the tangents to the circle $ x^2 + y^2 - 2x + 2y - 2 = 0 $ with respect to the circle $ x^2 + y^2 = 4 $ is

$ \int 3^{-\log_3 x^2} dx = $

For a CE transistor amplifier, the current amplification factor is 59 and the emitter current is 6.6 mA. Then the base current is

If $ \sin \theta = \frac{3}{5} $ and $ \theta $ is not in the first quadrant, then $ 15 \sin 2\theta - 20 \cos 2\theta - 7 \tan 2\theta $ is:

A and B are mutually exclusive events of a random experiment and $ P(B^c) \ne 1 $, then \[ P(A | B^c) = ? \]

Let the equation \[ ax^2 + 2hxy + by^2 + 2gx + 2fy + c = 0 \] represent a point circle (not at the origin). Then which one of the following conditions must hold?

If \[ \lim_{x \to 2} \frac{1 + \sqrt{1 + 4\log_2 x}}{2 + (2x + \sin^2 x + 2\cos x)(2x - 4)} = m, \] then $ m(m - 1) = $:

Total emf induced in a coil with $ N $ turns and changing magnetic flux $ \frac{d\phi_B}{dt} $ is:

Consider a gas phase reaction which occurs in a closed vessel. \[ 2A (g) \rightarrow 4B (c) + C (g) \] The concentration of B is found to be increased by $ 5 \times 10^{-3} $ mol L$^{-1}$ in 10 seconds. The rate of disappearance of A (in mol L$^{-1}$ s$^{-1}$) is

In $ \triangle ABC $, if $ (\sin A + \sin B)(\sin A - \sin B) = \sin C(\sin B + \sin C) $, then $ \angle A = $