List of top Chemistry Questions asked in AP EAPCET

Identify the correct statements from the following:
A) Among alkali metal ions, Li⁺ has the highest hydration enthalpy.
B) Boiling point of alkali metals increases from Li to Cs.
C) Density of K is less than that of Na and Rb.
D) Li has strong tendency to form superoxide.
The correct equation for one mole of a real gas is (a, b are constants)
For the following given equilibrium reaction, K\(_p\) is equal to 1076 at T(K). What is the value of T (in K)? \[ \text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \] Given that \( R = 0.082 \, \text{L atm K}^{-1} \text{mol}^{-1} \), \( K_p = 1076 \), the equation is: \[ K_p = 1076, \, R = 0.082 \, \text{L atm K}^{-1} \text{mol}^{-1} \]
The mass of a mixture containing NaCl and NaBr is 4.0 g. If Na is 20% of the total mixture, the composition of NaCl in the mixture is
a, b, c, d are electromagnetic radiations. Frequencies of a, b, c are $3 \times 10^{15$ Hz, respectively, whereas the wavelength of c, d are 400 nm, 750 nm, respectively. The increasing order of their energies is}
Which of the following sets are correctly matched?
MoleculeNumber of lone pairs of electrons on central atomHybridization
I) \( \text{PCF}_3 \)1\( \text{sp}^3 \)
II) \( \text{SO}_2 \)2\( \text{sp}^2 \)
III) \( \text{SF}_4 \)2\( \text{sp}^3d^2 \)
IV) \( \text{CF}_4 \)2\( \text{sp}^3 \)
The number of electrons with magnetic quantum number $m = 0$ in the elements with atomic numbers $Z = 24$ and $Z = 29$ are respectively
Which of the following orders is not correct for the given property?
Match the following
List-I (Molecule)List-II (Dipole moment in D)
A) \( \text{HCCl} \)I) \( 1.85 \, \text{D} \)
B) \( \text{NH}_3 \)II) \( 1.07 \, \text{D} \)
C) \( \text{H}_2\text{O} \)III) \( 0.23 \, \text{D} \)
D) \( \text{NF}_3 \)IV) \( 1.47 \, \text{D} \)
The sequence of reagents required to convert aniline to benzoic acid is:

Match the following polymers with their applications:

Match the following pollutant concentration limits in water with their effects:
List-I (Pollutant Concentration Limit in Water)List-II (Effect)
Pollutant 1Effect 1
Pollutant 2Effect 2
Pollutant 3Effect 3
Pollutant 4Effect 4
Match the following polymers with their applications:
List-I (Polymer)List-II (Used in making)
Polymer 1Application 1
Polymer 2Application 2
Polymer 3Application 3
Polymer 4Application 4
The structure of the product 'Z' in the reaction sequence is: \[ \text{CHO} \] \[ \mid \] \[
In which one of the following complexes the metal ion has \( t_{2g}^3 e_g^2 \) configuration?
The amphoteric oxide of Vanadium (V) reacts with alkali and forms an oxoion \( X \) and with acid forms an oxoion \( Y \). The oxidation states of \( V \) in \( X \) and \( Y \) are respectively:
Which of the following is not correct?
Consider the following: Statement-I: In the extraction of Al by Hall-Heroult process, pure \( Al_2O_3 \) mixed with \( Na_3AlF_6 \) lowers its melting point and increases conductivity. Statement-II: Zirconium metal is purified by zone refining method. The correct answer is:
The adsorption of a gas on a solid surface follows Freundlich adsorption isotherm. At \( T \)(K), the gas pressure is \( 2 \) atm. What is the value of \( \frac{x}{m} \)? (\( n = 2 \) and \( k \) = constant)
Which one of the following acts as an autocatalyst during titration of \( KMnO_4 \) and oxalic acid in presence of dilute \( H_2SO_4 \)?
Identify the reaction in which diborane is produced on an industrial scale:
Which of the following properties is not correct for silicones?
The correct order of density of Be, Mg, Ca, Sr is:
The composition of a sample of wustite is \( \text{Fe}_{0.93} \text{O}_{1.00} \). Percentage of iron in the form of \( \text{Fe}^{3+} \) ion is nearly:
Consider the following gaseous equilibrium reactions (I), (II) and (III) with equilibrium constants \( K_1 \), \( K_2 \), and \( K_3 \) respectively:
I) \( \frac{1}{2} N_2 + \frac{3}{2} H_2 \rightleftharpoons NH_3 \)
II) \( 2NO \rightleftharpoons N_2 + O_2 \)
III) \( H_2 + \frac{1}{2} O_2 \rightleftharpoons H_2O \)
The correct expression for the equilibrium constant for the gaseous equilibrium reaction: \[ 2NH_3 + \frac{5}{2} O_2 \rightleftharpoons 2NO + 3H_2O \]