List of top Chemistry Questions asked in AP EAPCET

When \(\mathrm{FeCl_3}\) solution is added to hot water, it forms a sol \(P\). However, when \(\mathrm{FeCl_3}\) solution is added to \(\mathrm{NaOH}\) solution it forms a sol \(Q\). What are \(P\) and \(Q\) respectively?
Observe the following reaction sequence (major product). \[ \mathrm{CH_3CH_2CH_2Br} \xrightarrow{\mathrm{HBr}} Y \xrightarrow[\text{major}]{\mathrm{alc.\ KOH}} Z \] Correct statement regarding \(Z\) is
Two statements are given below Statement--I: An object located at \(30\,\mathrm{km}\) above the sea level is in stratosphere. Statement--II: The maximum permissible limit of Cd present in drinking water is \(0.05\ \mathrm{ppm}\). The correct answer is
At \(300\ \mathrm{K}\), a decimolar solution of potassium ferrocyanide is \(50\%\) dissociated. The osmotic pressure (in atm) of the solution is \[ (R=0.082\ \mathrm{L\,atm\,K^{-1}\,mol^{-1}}) \]
Observe the following set of reactions \[ Y \xrightarrow[\text{NaNH}_2(l)]{} \mathrm{C_2H_2} \xrightarrow[\mathrm{H_2}/\mathrm{Pt}]{} X \] Hybridization of carbon in \(X\) and \(Y\), respectively is
An isomer of \(\mathrm{C_4H_8}\) is \(X\), which exhibits cis-trans isomerism. \(Y\) is the chain isomer of \(X\). Products formed on ozonolysis of \(Y\) are
The fraction of the total volume occupied by the atoms present in a face centred cubic unit cell is
Solution of HCN and NaCN forms a buffer solution. \(x\) moles of HCN is required to prepare \(1.0\ \mathrm{L}\) of buffer solution of \(\mathrm{pH}=9\) using \(0.01\) moles of NaCN. What is the value of \(x\)? \[ (K_a(\mathrm{HCN})=10^{-10}) \]
Which of the following is not the raw material in Solvay process?
Permanent hardness of water cannot be removed by
At \(1\,\mathrm{K}\), \(15\) moles of \(\mathrm{H_2}\) reacts with \(5.2\) moles of \(\mathrm{I_2}\) and forms \(10\) moles of \(\mathrm{HI}\). The equilibrium constant for the reaction \[ 2\mathrm{HI}(g)\rightleftharpoons \mathrm{H_2}(g)+\mathrm{I_2}(g) \] is
Which of the following carbon allotropes is not correctly matched with its use?
Which of the following statements regarding the similarities between boron and silicon is not correct?
Which of the following statements are correct about \(\mathrm{CO_3^{2-}}\) ion?
  1. The hybridisation of the central atom is \(sp^2\).
  2. The average formal charge on each oxygen atom is \(-\frac{2}{3}\).
  3. The resonance hybrid structure does not have one C--O single bond and two C=O double bonds; all C--O bonds are equivalent.
  4. All C--O bond lengths are equal.
A gas mixture contains \(64\%\) methane and \(36\%\) ethane by mass. The density of the mixture at \(27^\circ\mathrm{C}\) and \(750\ \mathrm{mmHg}\) pressure (in \(\mathrm{g\,L^{-1}}\)) is \[ (\text{At. wt. of C}=12,\; \text{H}=1,\; R=0.082\ \mathrm{L\,atm\,K^{-1}\,mol^{-1}}) \]
In which of the following, the number of valence electrons is maximum?
Identify the set with only extensive properties.
The number of significant figures present in \(0.0010200\times10^{5}\) is
In a photoelectric effect, the kinetic energy of electrons is \(1.3 \times 10^{-19}\,\text{J}\). If work function of the metal is \(2.27\,\text{eV}\), then the frequency (in Hz) of the incident radiation is (\(h = 6.6 \times 10^{-34}\,\text{J s}\), \(1\,\text{eV} = 1.6 \times 10^{-19}\,\text{J}\)).
Consider the following two statements Statement--I: The order of energies of \(2s\)-orbitals of H, Li and Na is \[ E_{2s}(\mathrm{H})<E_{2s}(\mathrm{Li})<E_{2s}(\mathrm{Na}) \] Statement--II: The photoelectric effect explains the wave nature of light. The correct answer is
An isomer of \(C_4H_8\) (A) exhibits cis-trans isomerism. Reaction of A with \(Br_2/CCl_4\) gave B. Another organic compound \(C_4H_6\) (C) forms sodium derivative with \(NaNH_2\). Reaction of C with HBr gave D. What are B and D respectively? center
center Options :
Match List-I with List-II and identify the correct combination. center
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Which one of the polymers does not contain \(-COO-\) linkage in its structure?
Two statements are given below: Statement I: Aspirin inhibits the synthesis of chemicals which stimulate inflammation. Statement II: The enzyme that degrades noradrenaline is inhibited by iproniazid. The correct answer is:
Identify the correct set containing only ambidentate ligands.