List of top Chemistry Questions asked in AP EAPCET

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.
At T(K) vapour pressure of pure benzene and toluene are 500 and 200 mm Hg respectively. If they form an ideal solution, what is the mole fraction of toluene in a mixture boiling at T(K) at a total pressure of 380 mm Hg ?
Which method is used to purify liquids having very high boiling points and liquids which decompose at or below their boiling point?
For a first-order reaction, the concentration of a reactant decreases from 0.8 M to 0.4 M in 20 minutes. What is the half-life of the reaction? (Use $\ln 2 = 0.693$)
The number of linear and crosslinked polymers in the following respectively are:
Novolac, Nylon 6,6, Bakelite, PVC, melamine
The equation which represents Freundlich adsorption isotherm is (x = amount of gas, m = mass of solid)
Which of the following complexes will exhibit optical isomerism?
At 27 °C, rms velocity of SO$_2$ is x ms$^{-1}$ and most probable velocity of O$_2$ at 127 °C is y ms$^{-1}$. The value of x : y is
Observe the following data.
IonQ4+Xb+Yc+Zd+
Radius (pm)536640100

Q4+, Xb+, Yc+, Zd+ are respectively

Match the following

The correct answer is:
What are X and Y respectively in the following set of reactions? X and Y respectively in the following set of reactions
In \( \text{Fe}_x[\text{Fe}_y(\text{CN})_6]_3 \), x, y respectively, are
What is the normality of a solution containing 4.9 g of \( \text{H}_2\text{SO}_4 \) in 500 mL of solution? (Molar mass of \( \text{H}_2\text{SO}_4 \) = 98 g/mol)
The correct order of the non-metallic character among the elements B, C, N, F and Si is
In a redox titration, 25 mL of 0.1 M KMnO$_4$ is required to completely react with oxalic acid in acidic medium. The volume of 0.2 M oxalic acid used is:
(Balanced reaction: \( 2\text{MnO}_4^- + 5\text{C}_2\text{O}_4^{2-} + 16\text{H}^+ \rightarrow 2\text{Mn}^{2+} + 10\text{CO}_2 + 8\text{H}_2\text{O} \))
What are \( X \) and \( Y \) in the following reaction? $$ \text{nCl/CH}_2 \xrightarrow{X} Y $$
Which one of the following acts as an autocatalyst during titration of \( KMnO_4 \) and oxalic acid in presence of dilute \( H_2SO_4 \)?
The synthetic detergents of the following are
synthetic detergents of the following are
KMnO\(_4\) oxidises hydrogen sulphide in acidic medium. The number of moles of KMnO\(_4\) which react with one mole of hydrogen sulphide is
Which one of the following is an example of physical equilibrium?
Calculate the enthalpy change ($\Delta H$) for the combustion of 1 mole of methane ($\mathrm{CH}_4$) given the reaction: $$ \mathrm{CH}_4(g) + 2 \mathrm{O}_2(g) \rightarrow \mathrm{CO}_2(g) + 2 \mathrm{H}_2 \mathrm{O}(l) $$ Given bond energies: C–H = 413 kJ/mol, O=O = 498 kJ/mol, C=O = 803 kJ/mol, O–H = 467 kJ/mol.
An ideal gas mixture of C\(_2\)H\(_6\) and C\(_2\)H\(_4\) occupies a volume of 28 L at 1 atm and 273 K. This mixture reacts completely with 128 g of O\(_2\) to produce CO\(_2\) and H\(_2\)O(\(l\)). What is the mole fraction of C\(_2\)H\(_4\) in the mixture ?
Identify the incorrect statement about the group 13 elements
Which of the following is not correct?
Which chloride does not exist as hydrate ?