List of top Questions asked in AP EAPCET

If '$\mu$' is the magnetic moment of an electron revolving around hydrogen nucleus in an orbit of principal quantum number 'n', then
A radioactive decay forms an isotope of the original nucleus with the emission of the following particles
A reverse biased zener diode when operated in the breakdown region works as
The current amplification factor and the collector current in a transistor circuit are 100 and 2.2 mA respectively. Then the base current is
Digital signal
The de Broglie wavelength of a particle is 1000 nm. What is its momentum? ($h=6.6 \times 10^{-34} \text{ J s}$)
If the unrtainty in velocity of an electron $(\Delta v)$ is $0.1 \text{ m/s}$, the unrtainty in its position $(\Delta x)$ is (given: $m_e = 9.1 \times 10^{-31} \text{ kg}$)

The number of following pairs of elements which exhibit diagonal relationship is:

  • i. B & Si
  • ii. Be & Al
  • iii. Li & Mg
  • iv. Al & S
The correct order of atomic radii of B, Be, N and C is

Match the following molecules with their dipole moments:

List IList II
\( \mathrm{H_2O} \)I. 0
\( \mathrm{BF_3} \)II. 0.23
\( \mathrm{NH_3} \)III. 1.47
\( \mathrm{NF_3} \)IV. 1.85
Which of the following is the correct order of increasing number of lone pair of electrons on the ntral atom?
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 $R = 0.082 \text{ L atm mol}^{-1} \text{K}^{-1}$)
A gas obeys Charles' law in the temperature range 0--500 K at a given pressure. Its volume changes to zero at temperature of
In neutral or faintly alkaline medium, ${MnO4^-}$ oxidizes ${I^-}$ to iodate. What is the number of moles of ${KMnO_4}$ required to completely convert 1 L of 0.5 M KI to iodate?
Identify the pair in which both are not extensive properties.

The standard enthalpy of formation of $CO_2$(g), ${CaO(s)}$ and ${CaCO_3(s)}$ are -393, -634, -1210 kJ mol$^{-1}$ respectively. If all the substans are in standard state, the standard enthalpy of decomposition of calcium carbonate to ${CaO(s)}$ and ${CO_2(g)}$ (in kJ mol$^{-1}$) is

At 1000 K, the value of $K_c$ for the below reaction is $10 \text{ mol L}^{-1}$. Value of $K_p$ (in atm) is (given $R = 0.082 \text{ atm L mol}^{-1} \text{K}^{-1}$)
${\{A(g) <=> B(g) + C(g)}$

Which of the following pairs form a precipitate of AgCl? 
(v) 1L of $10^{-5}~\text{M}$ NaCl is common. Test combinations with: $10^{-6}$ $M {AgNO_3} $

In which of the following reactions is ${H_2O}$ oxidized?
I. Photosynthesis
II. ${H_2O + F_2}$
III. ${H_2O + H_2}$
IV. ${H_2O + P_4O_{10}}$

Which of the following statements are correct?
LiF is less soluble in water
NaCl is less ionic than CsCl
Formation of alkali metal halide is an endothermic reaction

Which one of the following is correct?
Thermodynamically most stable allotrope of carbon is

What are X, Y in the following reaction sequen?

Which of the following reactions are not feasible?

Silver forms CCP structure and its density is $10.5~\text{g/cm}^3$. What is the edge length of the unit ll? (Molar mass of silver is $107.9~\text{g/mol}$)