List of top Chemistry Questions asked in AP EAPCET

Study the following list: I. Lys, II. Gln, III. Ser, IV. Cys, V. Tyr, VI. Asn. X is the set of amino acids containing -OH group and Y is the set of amino acids containing -CONH$_2$ group. What are X and Y respectively?

Which of the following statements are correct about adsorption from solution phase? I. The extent of adsorption decreases with an increase in temperature II. The extent of adsorption depends upon the concentration of solute in solution III. The extent of adsorption depends on nature of adsorbate and adsorbent

Formation of micelles takes place only above a particular temperature. This temperature is known as:

Which of the following statements is not correct about Ellingham diagram?

The number of Faradays involved in the conversion of 0.25 mol of $Al^{3+}$ to Al is x and number of Faradays involved in the conversion of 1100 mL of 0.5 M $Cu^{2+}$ to Cu is y. The values of x and y respectively are:

Match the following lists: A) $[MnCl_6]^{3-}$, B) $[Mn(CN)_6]^{3-}$, C) $[Fe(CN)_6]^{4-}$, D) $[CoF_6]^{3-}$ with their d-electronic configurations.

Which of the following pairs of ions are not paramagnetic in nature? (Atomic Number: $La=57$, $Ce=58$, $Eu=63$, $Gd=64$, $Tb=65$, $Yb=70$, $Lu=71$)

At T(K), 0.004 M $Na_2SO_4$ solution is isotonic with 0.01 M glucose solution. The degree of dissociation of $Na_2SO_4$ is:

Which of the following point defects are shown by AgBr crystals? I. Metal excess defect, II. Schottky defect, III. Metal deficiency defect, IV. Frenkel defect

Consider the following carbocations: (I) $(CH_3)_2CH-CH_2^+$, (II) $CH_2=CH-C^+H-CH_3$, (III) $(CH_3)_2CH-C^+H-CH_3$. The correct order of stabilities of these is:

In a reaction 2A $\rightarrow$ product, the concentration of A decreases from 0.5 M to 0.4 M in 10 minutes. The rate of the reaction (in mol $L^{-1} min^{-1}$) is:

Which of the following has no reaction with $NaNH_2$?

At 298 K, $E^{\circ}$ value of the cell involving $2 Fe^{3+}(aq) + 2 I^-(aq) \rightarrow 2 Fe^{2+}(aq) + I_2(s)$ is X V. The X (in V) and $\log K_c$ for the reaction are respectively: ($E^{\circ}_{Fe^{3+}/Fe^{2+}} = 0.77$ V, $E^{\circ}_{I_2/I^-} = 0.54$ V)

Identify the correct order of the given compounds against the given property:

In which of the following, pollutant in air/water is not correctly matched with its effect?

Borax $+ H_2O \rightarrow A + B$. What are A and B respectively?

The covalent hydrides of elements X and Y act as Lewis acid and Lewis base respectively. Covalent hydride of element Z is neither Lewis acid nor Lewis base. What are X, Y and Z respectively?

0.42 g of an organic compound containing C, H and O gave on combustion 0.942 g of $CO_2$ and 0.231 g of $H_2O$. The empirical formula weight of the compound is (At.wt: $C=12$ u, $H=1$ u, $O=16$ u)

Which of the following are the properties of silicones? I. Water repelling in nature II. High thermal stability III. Easily oxidisable IV. High dielectric strength

White phosphorus reacts with aqueous NaOH solution to form $PH_3(g)$ and aqueous sodium salt of hypophosphorus acid. 12.4 g of white phosphorus was dissolved in 500 mL of xM NaOH solution. The concentration of sodium salt of hypophosphorus acid in the resultant solution was 0.6 mol $L^{-1}$. What is the value of x in mol $L^{-1}$? (P=31u)

A solution is prepared by adding 0.5 L of 0.5 M NaOH solution to 0.5 L of x M HCOOH solution. The pH of resultant solution is 4.74. What is x in mol $L^{-1}$? (pKa (HCOOH) = 3.74)

What is the bond enthalpy (in kJ $mol^{-1}$) of C-H in ethane? ($\Delta_f H^{\ominus}(C_2H_6(g)) = -85$ kJ $mol^{-1}$; $H_2(g) \rightarrow 2H(g); \Delta_a H^{\ominus} = 435$ kJ $mol^{-1}$; $C(s) \rightarrow C(g); \Delta_a H^{\ominus} = 715$ kJ $mol^{-1}$; $\Delta_a H^{\ominus}(C-C) = 347$ kJ $mol^{-1}$)

One mole of $A(g)$ was taken in a 1L closed flask and heated to T(K). At equilibrium, the concentration of $A(g)$ is equal to four times the equilibrium concentration of $B(g)$. What is $K_c$ for $A(g) \rightleftharpoons B(g) + C(g)$?

For a fixed amount of an ideal gas, its pressure is measured as a function of volume at three different temperatures ($T_1, T_2, T_3$). What is the correct order of temperatures? figure [H]

figure

What is the work done (in J $mol^{-1}$) to vaporise 1 mole of $H_2O(l)$ to $H_2O(g)$ at 1 bar pressure and $100^{\circ}C$? ($\Delta_{vap}H = 41$ kJ $mol^{-1}$; $\Delta U = 37.9$ kJ $mol^{-1}$)