List of top Chemistry Questions asked in AP EAPCET

The incorrect statement about amylose is:
Kaolinite, a form of clay is the ore of metal X and malachite is the ore of metal Y. X and Y respectively are:
What is the \(E_{cell}\) (in V) of the following cell at 298 K?
\[ Zn(s) | Zn^{2+} (0.01 M) || Ni^{2+} (0.1 M) | Ni(s) \] Given \(E^\circ_{Zn^{2+}/Zn} = -0.76 V\), \(E^\circ_{Ni^{2+}/Ni} = -0.25 V\), \(\frac{2.303 RT}{F} = 0.06 V\)
The IUPAC name of the following compound is
7-Bromo-5-ethyl-2-methyldec-5-en-4-ol
Gold crystallizes in fcc lattice. The edge length of the unit cell is 4 Å. The closest distance between gold atoms is 'x' Å and density of gold is 'y' g/cm\(^3\). What are x and y respectively?
Identify the correct statements from the following (only one):
I) Sulphur sol is an example of multimolecular colloid.
II) Starch sol is an example of associated colloid.
III) Artificial rubber is an example of macromolecular colloid.
248 g of ethylene glycol (C\(_2\)H\(_6\)O\(_2\)) is added to 200 g of water to prepare antifreeze. What is the molality of the resultant solution?
A solution containing 7.5 g of urea (molar mass = 60 g/mol) in 1 kg of water freezes at the same temperature as another solution containing 15 g of solute X in the same amount of water. The molar mass of X (g/mol) is
The volume (in mL) of 10 volume \(H_2O_2\) solution required to completely react with 200 mL of 0.4 M \(KMnO_4\) solution in acidic medium is
Which of the following does not exist?
Consider the following reaction sequence:
Vinylbenzene \(\xrightarrow{KMnO_4 + KOH, \Delta}\) X \(\xrightarrow{NaOH + CaO, \Delta}\) Y
'Y' can also be formed from
The following equilibrium is established at STP:
\[ B_2 (g) \rightleftharpoons 2B(g) \] Atoms of B occupy 20% of total volume at STP. The total pressure of the system is 1 bar. What is its \(K_p\)? (STP volume = 22.7 L)
Which of the following statements is incorrect with reference to alkaline earth metals?
Consider the following:
Assertion (A): CO is poisonous to living beings
Reason (R): CO binds to hemoglobin forming carboxyhaemoglobin, which is less stable than oxygen-hemoglobin complex.
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
At temperature \(T(K)\), the solubility product of AgBr is \(4 \times 10^{-13}\). What is its solubility in 0.1 M KBr solution?
Consider the following statements:
Statement-I: If the intermolecular forces are stronger than thermal energy, the substance prefers to be in gaseous state.
Statement-II: Among all elements, the total number of elements available as gases at room temperature is 10.
At 298 K, \(\Delta_r G^\circ\) for the reaction \(\frac{3}{2} O_2(g) \to O_3(g)\) is 165.469 kJ mol\(^{-1}\). What is the equilibrium constant for this reaction?
Identify the conditions at which van der Waals equation of state changes to ideal gas equation.
At 273 K the maximum work done when pressure on 10 g of hydrogen is reduced from 10 atm to 1 atm under isothermal, reversible conditions is
In which of the following intramolecular H-bonding is absent?
Options:
- Salicylic acid
- Salicylaldehyde
- Quinol
- Catechol
Identify the correct statements from the following:
I) Isotopes of an element show different chemical behaviour
II) Lyman series of lines of hydrogen spectrum appear in UV region
III) The oscillating electric and magnetic field components of electromagnetic radiation are perpendicular to each other and both are perpendicular to the direction of propagation of radiation
Identify the correct set of molecules with zero dipole moment.
When a metal surface is irradiated with light of frequency \( \nu \) Hz, the kinetic energy of emitted photoelectrons is \( x \) J. When the same metal is irradiated with light of frequency \( y \) Hz, the kinetic energy of emitted electrons is \(\frac{z}{3}\) J. What is the threshold frequency (in Hz) of the metal?

What are X and Y respectively in the following reaction sequence? (G = ethanol, dil. = dilute HCl)