List of top Questions asked in AP EAPCET- 2025

Consider the following statements:
Statement-I: The order of electronegativity of B, Al, In, Tl is $B>Tl>Al>In$
Statement-II: Boric acid is a weak protic acid

Kaolinite, a form of clay is the ore of metal X and malachite is the ore of metal Y. X and Y respectively are:

In the structure of diborane, the number of 2-centre-2-electron bonds is X and 3-centre-2-electron bonds is Y. The value of (X + Y) is:

Match the following:
List-I (Process)
A. Hall-Heroult process
B. Mond process
C. Van-Arkel process
D. Zone refining process
List-II (Metal)
I. Ti
II. In
III. Al
IV. Ni

Which of the following is used as froth stabilizer in froth floatation process?

Identify the reaction in which diborane is produced on an industrial scale:

Which of the following methods is useful for producing semiconductor grade metals of high purity?

Which of the following sets are correctly matched?
I) Hg — distillation
II) Cu — poling
III) B — zone refining
IV) Ti — liquation

Consider the following Statement-I : $ \text{Al}_2\text{O}_3 $ is amphoteric in nature. Statement-II : $ \text{Tl}_2\text{O}_3 $ is more basic than $ \text{Ga}_2\text{O}_3 $. The correct answer is

Identify the reaction in which diborane is produced on an industrial scale:

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:

Consider the following Statement-I : $ \text{Al}_2\text{O}_3 $ is amphoteric in nature. Statement-II : $ \text{Tl}_2\text{O}_3 $ is more basic than $ \text{Ga}_2\text{O}_3 $. The correct answer is

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:

Complete hydrolysis of Xenon hexafluoride gives HF along with compound X. The hybridisation in X is

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$^{-1}$)

At 298 K, liquid A (solute) forms an ideal solution with liquid B (solvent). The following graph is obtained for this solution.

Identify the correct statements about this graph:
I) x-axis represents the mole fraction of A
II) Point Z represents the vapour pressure of pure solvent
III) x-axis represents the mole fraction of B

In an aqueous glucose solution, the mole fraction of water is 40 times the mole fraction of glucose. What is the weight percentage (w/w) of glucose in the solution?

Benzoic acid molecules undergo dimerisation in benzene. 2.44 g of benzoic acid when dissolved in 30 g of benzene caused depression in freezing point of 2 K. What is the percentage of association of it ? (Given $K_f (C_6H_6) = 5\operatorname{K kg mol^{-1}}$; molar mass of benzoic acid $= 122\operatorname{g mol^{-1}}$)

Two acids A and B are titrated separately. 25 mL of 0.5 M Na$_2$CO$_3$ solution requires 10 mL of A and 40 mL of B for complete neutralisation. The volume (in L) of A and B required to produce 1 L of 1 N acid solution respectively are

What is the molarity of a solution prepared by dissolving 5.85 g of NaCl in 500 mL of water?
(Molar mass of NaCl = 58.5 g/mol)

What are the mole fractions of glucose and water respectively, in 20% (w/w) aqueous glucose solution? ($C = 12\,u$; $O = 16\,u$; $H = 1\,u$)

Calculate the boiling point of a solution containing 18 g of glucose (C$_6$H$12$O$_6$) in 100 g of water. (K₋b = 0.52°C·kg/mol, Molar mass of glucose = 180 g/mol)