List of top Chemistry Questions asked in AP EAPCET

The composition of a sample of wustite is \( \text{Fe}_{0.93} \text{O}_{1.00} \). Percentage of iron in the form of \( \text{Fe}^{3+} \) ion is nearly:
Identify the reaction in which diborane is produced on an industrial scale:
The correct order of density of Be, Mg, Ca, Sr is:
Which set of elements form electron-precise hydrides?
Consider the following gaseous equilibrium reactions (I), (II) and (III) with equilibrium constants \( K_1 \), \( K_2 \), and \( K_3 \) respectively:
I) \( \frac{1}{2} N_2 + \frac{3}{2} H_2 \rightleftharpoons NH_3 \)
II) \( 2NO \rightleftharpoons N_2 + O_2 \)
III) \( H_2 + \frac{1}{2} O_2 \rightleftharpoons H_2O \)
The correct expression for the equilibrium constant for the gaseous equilibrium reaction: \[ 2NH_3 + \frac{5}{2} O_2 \rightleftharpoons 2NO + 3H_2O \]
Match the following pollutant concentration limits in water with their effects:
At \( 27^\circ C \) kinetic energy of 4 g of \( H_2 \) is \( x \) J. What is the kinetic energy (in J) of 6.4 g of oxygen at \( 127^\circ C \)?
The sum of bond order values of \( C_2 \) and \( O_2^{2-} \) is \( x \), which is equal to the sum of bond order values of \( a, b, \) and \( c \). What are \( a, b, \) and \( c \)?
What are X and Y respectively in the following set of reactions? X and Y respectively in the following set of reactions
In the given reaction sequence conversion of Y to Z is
reaction sequence conversion of Y to Z is
The preferred reagent for the preparation of pure alkyl chloride from alcohol is
The correct statement regarding X and Y in the following set of reactions is
Which of the following is used as froth stabilizer in froth floatation process?
In a colloidal solution, both the dispersed phase and dispersion medium are in liquid phase. What is the type of colloid?
Which method is used to purify liquids having very high boiling points and liquids which decompose at or below their boiling point?
Consider the following Statement-I : \( \text{Al}_2\text{O}_3 \) is amphoteric in nature. Statement-II : \( \text{Tl}_2\text{O}_3 \) is more basic than \( \text{Ga}_2\text{O}_3 \). The correct answer is
Identify the incorrect order against the stated property.
4 mL of 'X volume' \( \text{H}_2\text{O}_2 \) on heating gives 80 mL of oxygen at STP. The value of X is
How many of the following molecules have two lone pairs of electrons on central atom? SF\(_6\), BF\(_3\), ClF\(_3\), PCl\(_5\), BrF\(_5\), XeF\(_4\), H\(_2\)O, SF\(_4\)
The pair of molecules / ions with the same bond order value is
Consider the following A) 0.0025 B) 500.0 C) 2.0034 Number of significant figures in A, B and C respectively, are
Consider the following reaction A(g) + 3B(g) \( \longrightarrow \) 2C(g); \( \Delta H^\ominus = -24 \) kJ. At \(25 \, ^\circ\text{C}\) if \( \Delta G^\ominus \) of the reaction is -9 kJ, the standard entropy change (in JK\(^{-1}\)) of the same reaction at same temperature is
The correct order of the non-metallic character among the elements B, C, N, F and Si is

What is the ratio of sp$^3$ carbons to sp$^2$ carbons in the product 'P' of the given sequence of reactions?

Which one of the following halogen compounds is least reactive towards hydrolysis by S$_N$1 mechanism?