List of top Chemistry Questions asked in AP EAPCET

Given below are two statements Assertion (A): Conductivity of an electrolyte decreases on dilution Reason (R): On dilution number of ions per unit volume increases The correct answer is
When \(10^{-3} \, M\) solution of glucose in water freezes at -0.0186°C, then at what temperature \(10^{-3} \, M\) solution of NaCl will freeze?
In which of the following, the sol is not correctly matched with respect to its charge?
Molar depression constant (\(K_f\)) is dependent on
In the x-ray reflection (n=1), the distance between two parallel planes of NaCl is 280 pm and diffraction angle is 5.2°. What is the wavelength of its light radiation?
The major product of the following reaction is
alkyl group
Among the following organic halides in the increasing order of their dehydrohalogenation reactions in the presence of alcoholic KOH
dehydrohalogenation reactions
Observe the following solutions: \[ \text{I. Black coffee} \quad \text{II. 0.2M NaOH} \quad \text{III. Lemon juice} \] \[ \text{IV. Lime water} \quad \text{V. Human Saliva} \quad \text{VI. Tomato juice} \] The number of solutions with pH less than 7 is
Two alkali halide salts, \[ \text{ACl} \] and \[ \text{BCI} \] gave crimson red and violet in their flame test respectively. A and B are respectively
Observe the following equilibrium at T(K) \[ H_2(g) + I_2(g) \rightleftharpoons 2HI(g) \] Which one of the following does not disturb the above equilibrium?
Given below are two statements Assertion (A): The enthalpy of formation of graphite is taken as zero. Reason (R): Graphite is thermodynamically most stable allotrope of carbon. The correct answer is
The number of water molecules present in borax, kernite and bauxite respectively are
Among the following, the correct statement is
The correct order of C − O bond length in CO, CO2−3, CO2 is
The P − P bond angle in P4 and S − S bond angle in cyclo S8 molecule are respectively
At 300 K, the compressibility factor of 1 mole of a gas is 1.1. Its pressure is 2.706 atm. What is its volume in L? (Given R = 0.082 L atm mol$^{-1}$ K$^{-1}$)
At T (K) and pressure P, the diffusion rate of an ideal gas is 120 mL min$^{-1}$. What is the time taken (in sec.) for 3000 mL of this gas for diffusion at the same temperature and pressure?
Observe the following reaction \[ xS_8 (s) + yOH^-(aq) \to zS^{2-}(aq) + 2S_2O_3^{2-}(aq) + 6H_2O(l) \] x, y and z are respectively.
If \( \Delta G \) and \( \Delta S \) for the reaction \( A(g) \to B(g) + 2C(g) \) at 2000 K are -40 kJ mol$^{-1}$ and 0.22 kJ K$^{-1}$ mol$^{-1}$, respectively, the change in internal energy for the same reaction approximately (in kJ mol$^{-1}$) is?
If 100 L of an ideal gas at a pressure of 2 atm is compressed isothermally and reversibly to a final volume of ‘X’ L releases -460.6 L atm heat, the final volume ‘X’ (in L) is
Consider the elements Ne, Na, Mg. The element with highest first ionization enthalpy and element with lowest second ionization enthalpy respectively are
The IUPAC symbol for the element with atomic number 108 is
The number of d-electrons in \( \text{Cr}^{3+} \) ion (\( Z = 24 \)) is

A, B and C are weak acids. Their dissociation constants (\(K_a(A)\), \(K_a(B)\), \(K_a(C)\)) are \[ 3.5 \times 10^{-4}, 1 \times 10^{-5} \text{ and } 5 \times 10^{-10} \text{ respectively. The pH of 1L of 0.01 M each of these solutions follow the order.} \]

Identify correctly matched pairs: \[ \text{I. Borax} \quad \text{Na}_2\text{B}_4\text{O}_7 \cdot 10\text{H}_2\text{O} \quad \text{II. Kernite} \quad \text{Na}_2\text{B}_4\text{O}_7 \cdot 7\text{H}_2\text{O} \] \[ \text{III. Bauxite} \quad \text{Al}_2\text{O}_3 \cdot \text{H}_2\text{O} \quad \text{IV. Cryolite} \quad \text{Na}_3\text{AlF}_6 \]