List of top Chemistry Questions asked in AP EAPCET

The ratio of number of \(sp^{3}\) hybrid orbitals to number of \(sp^{2}\) hybrid orbitals in the major product (Z) of the given reaction sequence is

Which of the following reaction is not correct?

Consider the following carbocations and the correct stability order for the above carbocations is

At \(T(K)\), in a 10 L flask, the following equilibrium is established:
\(2SO_{2}(g)+O_{2}(g)\rightleftharpoons 2SO_{3}(g)\).
The value of \(K_{c}\) for this reaction is 100. At equilibrium, the number of moles of \(SO_{3}(g)\) is equal to twice the number of moles of \(SO_{2}(g)\). What is the number of moles of \(O_{2}(g)\) at equilibrium?

The total number of electrons, protons and neutrons present in the three isotopes of hydrogen is

The structure of \(Al_{2}Cl_{6}\) is given below. The correct order of bond angles X, Y and Z is

What is the conjugate acid of \(H_{3}P_{2}O_{6}^{-}\)?

Which of the given statements are not correct for Li and Mg?
I. Both Li and Mg mainly give monoxides only II. Both Li and Mg react slowly with water III. Both Li and Mg give flame test IV. On combustion in air Mg forms \(Mg_{3}N_{2}\) but Li does not form \(Li_{3}N\)

What is the enthalpy change \((in~J~mol^{-1})\) for the conversion of 1 mole of \(H_{2}O (l)\) at \(10^{\circ}C\) to 1 mole of \(H_{2}O (s)\) at \(-10^{\circ}C\)? \((At~0^{\circ}C~H_{2}O(s)+x~kj~mol^{-1}\rightarrow H_{2}O(l); C_{p}(H_{2}O(l))=yJ~mol^{-1}K^{-1}; C_{p}(H_{2}O(s))=zJ~mol^{-1}K^{-1})\)

Observe the following statements:
Statement - I: The correct order of O-O bond length in \( O_{2} \), \( H_{2}O_{2} \) and \( O_{3} \) is \( H_{2}O_{2} > O_{3} > O_{2} \).
Statement - II: Hybridisation of carbon in graphite and pyridine is same.

At constant temperature, one mole of an ideal gas of volume 2L was expanded to 100 L against an external pressure of 1 atm under reversible conditions. What is the change in internal energy? \((1 L atm=101.3~J; log~5=0.7)\)

At 300 K, one mole of a gas present in a 10 L flask exerted a pressure of 2.71 atm. What is its compressibility factor? \((R=0.082~L~atm~mol^{-1}K^{-1})\)

In which of the following sets, molecules are correctly arranged in the decreasing order of covalent character? I. \( \text{AlCl}_{3} > \text{MgCl}_{2} > \text{NaCl} \) II. \( \text{BeCl}_{2} > \text{MgCl}_{2} > \text{CaCl}_{2} \) III. \( \text{CaI}_{2} > \text{CaBr}_{2} > \text{CaCl}_{2} \)

Observe the following unbalanced equation \(aS_{8}+b~OH^{-}(aq)\rightarrow cS^{2-}(aq)+dS_{2}O_{3}^{2-}(aq)+eH_{2}O(l)\). In the balanced equation, the ratio of c and d is:

In which of the following, elements are not in correct order with respect to the property mentioned in brackets?

In an atom, electron is moving with a speed of $x~ms^{-1}.$ If its speed is measured within an accuracy of 0.001%, what is its uncertainty in position (in m)? $(m_{e}=9\times10^{-31}kg, h=6.6\times10^{-34}Js)$

Wavelength of a particular line in Balmer series of atomic spectrum of hydrogen is 656.4 nm. What is the wavelength (in nm) of corresponding line in the spectrum of $He^{+1}$?

C$_2$H$_5$Cl + KCN $\rightarrow$ X (major product). X can also be obtained from which of the following reactions? I. C$_2$H$_5$NH$_2 \xrightarrow{KOH, CHCl_3, \Delta}$, II. C$_2$H$_5$CONH$_2 \xrightarrow{Py, \Delta}$, III. C$_2$H$_5$CHO (i)NH_2OH, (ii)(CH_3CO)_2O

In which of the following reactions mesityl oxide is formed?

The correct order of their acidic strength for the given compounds is:

From the following, identify the set in which polymer is correctly matched with its type:

What is the IUPAC name of the compound formed when m-cresol is subjected to dinitration?

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 are chiral molecules? I. Pentan-3-ol, II. 3-Methylheptane, III. 3-Bromo-3-methylpentane, IV. 3-Bromo-2-methylpentane

Match the following: A. Swarts reaction, B. Finkelstein reaction, C. Wurtz-Fittig reaction, D. Sandmeyer reaction.