List of top Chemistry Questions asked in AP EAPCET

Two 1 L flasks at T(K) contain O2 and helium with rms velocities of x m s-1 and y m s-1, respectively. What is the relationship between x and y?
A gaseous mixture at temperature T(K) consists of dihydrogen and dioxygen, with a total pressure of 2 2 bar. If the mixture is 33.33% dihydrogen and 66.67% dioxygen, what is the approximate partial pressure (in bar) of dihydrogen? (T(K), 2 bar total pressure)
The electron gain enthalpy (Cl2,H) of chlorine is -3.7 eV mol-1. How much energy (in kcal mol-1) is released when 71 g of chlorine atoms are completely converted into Cl- ions in gaseous state? (1 eV = 23 kcal)
The number of d-electrons in Fe2+ (Z = 26) is not equal to:
Identify the artificial sweetener which has highest sweetness value compared to cane sugar
Consider the following
Statement-I: Natural rubber becomes soft at low temperature and brittle at high temperature.
Statement-II: Natural rubber has weak van der Waals forces between its polymer chains.
Sucrose when boiled with dilute HCl gives two functional isomers X and Y. X gives monocarboxylic acid with bromine water but not Y. The number of --OH groups in cyclic structure of X is
The water soluble vitamin which is not excreted through urine easily is
Identify the complex ion/s with the least spin only magnetic moment (in BM).
I) [Fe(CN)$_6$]$^{3-}$
II) [Co(CN)$_6$]$^{3-}$
III) [Mn(CN)$_6$]$^{4-}$
IV) [Fe(CN)$_6$]$^{4-}$
Identify the reaction which occurs in blast furnace at temperature of above 900 K.
Alkaline oxidative fusion of MnO$_2$ gives 'X'. The products formed when 'X' undergoes disproportionation in acid medium are
I) KMnO$_4$
II) MnO$_2$
III) O$_2$
IV) H$_2$O
The osmotic pressure of 0.01 molar solution of an electrolyte is found to be 0.65 bar at 27°C. The van’t Hoff factor of the electrolyte is (R = 0.083 bar L K$^{-1}$ mol$^{-1}$)
The number of monochloro derivatives possible for 2,2-Dimethylbutane and 2,3-Dimethylbutane are respectively
The BOD value of clean water is X. The maximum concentration of cadmium recommended in drinking water is Y. X and Y respectively are
For the reactions: NaBH$_4$ + I$_2$ $\rightarrow$ A + NaI + H$_2$, and A + LiH $\rightarrow$ B, what are A and B, respectively? (Reactions are not balanced)
The buffer system that helps in maintaining pH of blood between 7.26 and 7.42 is
Vessel (A) contains 1 mole each of H$_2$ and I$_2$, and vessel (B) contains 2 moles each of H$_2$ and I$_2$. Both vessels are at the same temperature and reach equilibrium for the reaction H$_2$(g) + I$_2$(g) $\rightleftharpoons$ 2HI(g). What is the ratio of the equilibrium constants $K_p$ for vessels A and B?
The conjugate acid and base of ammonia are X and Y, respectively. What are the shapes of X and Y?
Observe the following molecules: ClF, SF$_4$, CH$_4$, NH$_3$, XeF$_4$, PCl$_5$. The number of molecules in which the central atom has expanded octet is:
The sum of number of antibonding electrons present in O$_2$, O$_2^+$, O$_2^-$ is:
One mole of an ideal gas is contained in a 1 L vessel at T(K) with a pressure of p atm. The vessel is split into two equal parts. What are the pressure and volume in each part?
Identify the amide which gives propan-1-amine by Hoffmann bromamide reaction.
What are X and Z in the following reaction sequence? (X forms sodium alkynide) \[ X (C_4H_6) \xrightarrow{{partial reduction}} Y \xrightarrow{H_2O/H^+} Z ({major product}) \]
Which of the following compounds give salt of an acid and alcohol on heating with concentrated KOH?
What is Z in the given reaction sequence? \[ {(1) } B_2H_6 \longrightarrow X \xrightarrow{PCC} Y \xrightarrow{NH_2OH} Z \] \[ {(2) } H_2O, H_2O_2, OH^- \]