List of top Chemistry Questions asked in AP EAPCET

Identify the pair of elements in which the number of electrons in the (n-1) shell is the same:

The angular momentum of an electron in a stationary state of \(Li^{2+}\) (\(Z=3\)) is \( \frac{3h}{\pi} \). The radius and energy of that stationary state are respectively.

Which of the following reactions give phosphine? i. Reaction of calcium phosphide with water
ii. Heating white phosphorus with concentrated NaOH solution in an inert atmosphere
iii. Heating red phosphorus with alkali

Which of the following is an example for fibre?

The conversion of X to Y is:

The incorrect statement about 'B' is:

The two reactions involved in the conversion of benzene diazonium chloride to biphenyl are respectively

Consider the reactions:

Consider the following reactions:

Y and Z respectively are:

An alkene X (\( C_4H_8 \)) does not exhibit cis-trans isomerism. Reaction of X with \( Br_2 \) in the presence of UV light gave Y. What is Y?

When glucose is oxidized with nitric acid, the compound formed is

The paramagnetic complex ion which has no unpaired electrons in \( t_{2g} \) orbitals is

The number of essential and non-essential amino acids from the following list respectively is Given amino acids: Val, Gly, Leu, Lys, Pro, Ser

Which transition metal does not form ‘MO’ type oxide? (M = transition metal)

Which of the following pair is not correctly matched?

The difference in radii between fourth and third Bohr orbits of \( He^+ \) (in m) is:

If \( \lambda_0 \) and \( \lambda \) are respectively the threshold wavelength and wavelength of incident light, the velocity of photoelectrons ejected from the metal surface is:

The correct order of atomic radii of N, F, Al, Si is:

The correct order of covalent bond character of \( BCl_3, CCl_4, BeCl_2, LiCl \) is:

At \( T(K) \), the \( P, V \) and \( u_{\text{rms}} \) of 1 mole of an ideal gas were measured. The following graph is obtained. What is its slope (\( m \))? (x-axis = \( PV \); y-axis = \( u_{\text{rms}}^2 \); \( M \) = Molar mass)

In which of the following pairs, both molecules possess dipole moment?

Three layers of liquid are flowing over a fixed solid surface as shown below. The correct order of velocity of liquid in these layers is:

A flask contains 98 mg of H₂SO₄. If \( 3.01 \times 10^{20} \) molecules of H₂SO₄ are removed from the flask, the number of moles of H₂SO₄ remaining in the flask is (\( N = 6.02 \times 10^{23} \)):

Identify the correct equation relating \( \Delta H \), \( \Delta U \), and \( \Delta T \) for 1 mole of an ideal gas (R = gas constant):

The number of extensive properties in the following list is: Enthalpy, density, volume, internal energy, temperature.