List of top Chemistry Questions asked in AP EAPCET

Consider the following reaction: \[ \text{Ca}_3\text{P}_2 \xrightarrow{\text{HCl}} \text{X} + \text{Y} \uparrow \] Which of the following is not correct regarding Y?
Which pair of ions act as strong reducing agents?
Which of the following is disproportionation reaction?
The time taken for 60% completion of a first order reaction is 13.22 min. What is its half-life ($t_{1/2}$) in min? ($\log(2.5) = 0.398$)
Given below are two statements
Statement I: Order of a reaction can be obtained from experiment and can have zero or positive integer or positive fraction values
Statement II: In the Arrhenius equation, the frequency factor is the fraction of molecules that can have energy higher than $E_{\text{a}}$
Adsorption of a gas on a metal oxide surface follows Freundlich adsorption isotherm. At $300\text{ K}$, the slope and intercept of this isotherm are 2 and 1.0 respectively. What is the value of $\frac{x}{m}$ when the pressure of the gas is 4 bar?
Two statements are given about the galvanic cell shown below
Statement I: Current flows from Cu electrode to Zn electrode
Statement II: With increase in time the mass of Zn electrode increases and mass of Cu electrode decreases
Correct answer is
Animal skin is X charged and tannin is Y charged. X and Y are respectively
What is the principle involved in froth floatation process?
In the estimation of nitrogen by Kjeldahl's method, the ammonia evolved from 0.30 g of an organic compound (X) was passed into 100 mL of 0.1 M $\text{H}_2\text{SO}_4$. The unreacted acid required 20 mL of 0.5 M NaOH for complete neutralization. What is X?
Identify the correct option in which the compound is not named as per IUPAC
(A)
(B)
(C)
(D)
An alkene 'X' on ozonolysis gives a mixture of ethanal and pentan-3-one. The IUPAC name of alkene 'X' is
A solution is prepared by dissolving ethanol in water. The mole fraction of ethanol in this solution is 0.04. What is the molarity (in $\text{mol L}^{-1}$) of the solution? (density of water is $1\text{ g mL}^{-1}$. Neglect the volume of ethanol)
Acrolein, formaldehyde and peroxy acetyl nitrate are the main compounds present in photochemical smog. The total number of $\text{sp}^2$ carbons present in these three compounds is
Given below are statements
Statement I: Unit cell in a lattice has six characteristic parameters
Statement II: In fcc lattice, the total number of atoms/ions per unit cell is 4
In group 14 elements, element X has lowest melting point. This on heating with steam gives a compound Y. What is Y?
Aluminium carbide on reaction with heavy water gives a carbon compound X. The hybridization in X is
The nature of oxides of aluminium, boron and gallium are respectively
The pH of 1 L of HCl solution is 1.0. What is the volume (in L) of water to be added to this solution to increase its pH to 2.0?
Which of the following statements are not correct about compounds of Beryllium?
I. Beryllium halides are covalent in nature
II. $\text{Be(OH)}_2$ is basic in nature
III. $\text{BeCO}_3$ is unstable
IV. BeO has rock salt structure
Given below are two statements:
Statement I: Physical equilibrium takes place only in closed systems at a given temperature
Statement II: For an equilibrium reaction, $\Delta_r G$ is zero
Consider the following reaction: \[ \text{CCl}_4(g) \rightarrow \text{C}(g) + 4 \text{Cl}(g) \quad \Delta H = 1304\text{ kJ} \] What is $\Delta_{\text{vap}} H^\ominus$ of $\text{CCl}_4(l)$ (in $\text{kJ}\cdot\text{mol}^{-1}$)?
Given: $\Delta_f H^\ominus(\text{CCl}_4(l)) = -135.5\text{ kJ}\cdot\text{mol}^{-1}$, $\Delta_a H^\ominus(\text{C}) = 715\text{ kJ}\cdot\text{mol}^{-1}$, $\Delta_a H^\ominus(\text{Cl}_2) = 242\text{ kJ}\cdot\text{mol}^{-1}$
Consider the following reaction: \[ \text{CaCO}_3(s) \rightarrow \text{CaO}(s) + \text{CO}_2(g) \quad \Delta H = 178\text{ kJ} \] The standard enthalpy of formation of $\text{CaCO}_3(s)$ and $\text{CO}_2(g)$ is $-1207$ and $-393\text{ kJ}\cdot\text{mol}^{-1}$ respectively. What is $\Delta_f H^\ominus$ (in $\text{kJ}\cdot\text{mol}^{-1}$) of $\text{CaO}(s)$?
Which of the following have same number of significant figures?
(A) 0.0025
(B) 0.0430
(C) 5005
(D) 500.0
(E) 2.003
3 g of $\text{O}_2$ diffuses from a container in 15 min. The mass (in g) of $\text{SO}_2$ diffusing from the same container under the same conditions is (At. wt: $\text{O} = 16$ u, $\text{S} = 32$ u)