List of top Chemistry Questions asked in AP EAPCET

Arrange the following in the correct order of their bond orders.
\[ \mathrm{N_2}\quad (I), \qquad \mathrm{O_2}\quad (II), \qquad \mathrm{O_2^{+}}\quad (III), \qquad \mathrm{O_2^{-}}\quad (IV) \]

The molecule which has more number of lone pair of electrons than the bond pair of electrons in its central atom is:

The velocity of the electron in Bohr's first orbit is \(x\times10^6\ \text{m s}^{-1}\). The de Broglie wavelength associated with it (in nm) is
\[ \left(m_e=9\times10^{-31}\ \text{kg},\ h=6.6\times10^{-34}\ \text{J s}\right) \]

Among the ions \(\mathrm{O^{2-}},\ \mathrm{Na^+},\ \mathrm{F^-},\ \mathrm{N^{3-}},\ \mathrm{Mg^{2+}}\), the ions with smallest and largest radii are respectively

The element with the electronic configuration \([Kr]\,4d^{10}\,5s^{0}\) is:

The ratio of radii of second orbit of hydrogen atom to fourth orbit of \(He^+\) ion is:

Identify the product formed in the following reaction sequence.

Identify the major product of the following reaction.

Which of the following is not true about the denaturation of protein?

Identify the major product formed when propene is treated with hydrogen chloride followed by Swarts reaction.

Identify the product \(P\) from the following sequence of reactions.

Statement-I : Despite having aldehyde group, glucose does not give Schiff test.
Statement-II : Glucose exists in \(\alpha\) and \(\beta\) crystalline forms.

Match the following:

When ethanol is treated with sulphuric acid at \(413\ K\), the reaction involved in it is:

Assertion (A): The aggregate of carboxylate ions of fatty acids forms a spherical shape.
Reason (R): Soap helps in emulsification and washing away of oils.

Which of the following \(f\)-block element exhibits the highest oxidation state?

The correct order about the number of unpaired electrons present in the following complexes is \[ [Fe(CN)_6]^{4-}\quad (I) \] \[ [Fe(H_2O)_6]^{2+}\quad (II) \] \[ [Co(H_2O)_6]^{2+}\quad (III) \]

In the following reaction for the preparation of gold sol, \(a,\ b,\ c,\ x,\ y,\) and \(z\) are \[ aAuCl_3+bHCHO+cH_2O\rightarrow xAu(sol)+yHCO_2H+zHCl \]

Which of the following compound has reducing character?

Assertion (A): All noble gases are monatomic.
Reason (R): All noble gases have very low melting and boiling points.

At \(298\ K\), vapour pressures of two pure liquids A and B are \(200\) and \(400\ \text{mm Hg}\) respectively. If mole fractions of A and B in solution are \(0.7\) and \(0.3\) respectively, what is the mole fraction of B in vapour phase?

The freezing point depression of a solution containing \(0.6\ \text{g}\) of urea \((\text{molar mass}=60\ \text{g mol}^{-1})\) in \(100\ \text{g}\) of benzene is in K \((K_f=4.0\ \text{K kg mol}^{-1})\):

In a first order reaction, the concentration of the reactant is reduced from \(0.6\ \text{mol L}^{-1}\) to \(0.2\ \text{mol L}^{-1}\) in \(5\) min. What is the rate constant of the reaction? \((\log 3=0.4771)\)

Which of the following molecular formula and type of defect are correct for the following statement? ``In FeO crystal, some \(Fe^{2+}\) ions are missing and the loss of positive charge is made up by the presence of \(Fe^{3+}\) ions.''

The standard Gibbs energy change for Daniell cell reaction is \[ Zn(s)+Cu^{2+}(aq)\rightarrow Zn^{2+}(aq)+Cu(s) \] \[ E^\circ_{\text{cell}}=1.1\ V \] Find the standard Gibbs energy change \((\Delta G^\circ)\).