List of top Chemistry Questions asked in AP EAPCET

Identify the reaction in which oxygen is not one of the products.
Arrange the following in order of increasing number of unpaired electrons in them:
  1. \([Fe(CN)_6]^{3-}\)
  2. \([MnCl_6]^{3-}\)
  3. \([FeF_6]^{3-}\)
  4. \([Co(NH_3)_6]^{3+}\)
Identify the correctly matched pairs.
  1. \(\mathrm{TiO_2}\) – Pigment industry
  2. \(\mathrm{MnO_2}\) – Dry battery cells
  3. \(\mathrm{Cu/Ni}\) alloy – UK 'copper' coins
In which of the following pairs the polymer is correctly matched with the forces possessed by them?
A. Neoprene —- Weak intermolecular forces
B. Terylene —- Hydrogen bonding
C. Polystyrene —- Very weak intermolecular forces
D. Polythelene —- Hydrogen bonding
In nucleoside, the base is attached to which position of the sugar molecule?
Hypothyroidism is due to
A. High level of iodine in the diet
B. Enlargement of thyroid gland
C. Low levels of iodine in the diet
D. Increased levels of thyroxine
Ortho-sulphobenzimide is used as:
Two statements are given below
Statement I: Chlorobenzene on nitration gives 1-chloro-4-nitrobenzene as major product
Statement II: Chlorobenzene undergoes nitration slowly than benzene
Identify the correct answer
In SN2 reaction, the carbon in the transition state is:
Which of the following has more pK\(_a\) value?
Vinegar and butter are the sources for which of the following carboxylic acids respectively?
Identify X, Y and Z in the following reactions sequence:
X, Y and Z in the following reactions sequence
Which of the following produces nitrogen gas after the reaction with nitrous acid?
The number of metalloids in the following elements are: Si, Mn, B, F, Cu, Ag, K, Sb, As, Na, Ge

The number of following pairs of elements which exhibit diagonal relationship is:

  • i. B & Si
  • ii. Be & Al
  • iii. Li & Mg
  • iv. Al & S
The correct order of atomic radii of B, Be, N and C is

Match the following molecules with their dipole moments:

List IList II
\( \mathrm{H_2O} \)I. 0
\( \mathrm{BF_3} \)II. 0.23
\( \mathrm{NH_3} \)III. 1.47
\( \mathrm{NF_3} \)IV. 1.85
Which of the following is the correct order of increasing number of lone pair of electrons on the ntral atom?
The vapors of 1 g of an element occupy 2.5625 L exerting a pressure of 0.5 atm at 1000 K. What is the molar mass (in $\text{g mol}^{-1}$) of the element? (Assume vapors follow ideal gas equation. Given $R = 0.082 \text{ L atm mol}^{-1} \text{K}^{-1}$)
A gas obeys Charles' law in the temperature range 0--500 K at a given pressure. Its volume changes to zero at temperature of
In neutral or faintly alkaline medium, ${MnO4^-}$ oxidizes ${I^-}$ to iodate. What is the number of moles of ${KMnO_4}$ required to completely convert 1 L of 0.5 M KI to iodate?
Identify the pair in which both are not extensive properties.

The standard enthalpy of formation of $CO_2$(g), ${CaO(s)}$ and ${CaCO_3(s)}$ are -393, -634, -1210 kJ mol$^{-1}$ respectively. If all the substans are in standard state, the standard enthalpy of decomposition of calcium carbonate to ${CaO(s)}$ and ${CO_2(g)}$ (in kJ mol$^{-1}$) is

At 1000 K, the value of $K_c$ for the below reaction is $10 \text{ mol L}^{-1}$. Value of $K_p$ (in atm) is (given $R = 0.082 \text{ atm L mol}^{-1} \text{K}^{-1}$)
${\{A(g) <=> B(g) + C(g)}$