List of top Chemistry Questions asked in AP EAMCET

At 300 K, \( \Delta_r G^\circ \) for the reaction \( A(g) \rightleftharpoons B(g) \) is \( -11.5 \) kJ mol\(^{-1}\). The equilibrium constant at 300 K is approximately: \((R = 8.314 \text{ J mol}^{-1} \text{ K}^{-1})\)
100 mL of 0.1 M HA (weak acid) and 100 mL of 0.2 M NaA are mixed. What is the pH of the resultant solution? \((K_a \text{ of HA is } 10^{-5}, \log 2 = 0.3)\)
Identify the correct statements from the following:
i. Reaction of hydrogen with fluorine occurs even in dark.
ii. Manufacture of ammonia by Haber process is an endothermic reaction.
iii. HF is an electron-rich hydride.
In which of the following reactions, hydrogen is one of the products?
Two statements are given below:
Statement I: SnF\(_4\), PbF\(_4\) are ionic in nature.
Statement II: GeCl\(_2\) is more stable than GeCl\(_4\).
The correct answer is:
Species A, B, C, D formed in the following bond cleavages respectively are
bond cleavages
A compound is formed by atoms of A, B and C. Atoms of C form hcp lattice. Atoms of A occupy 50% of octahedral voids and atoms of B occupy $\frac{2}{3}$ of tetrahedral voids. What is the molecular formula of the solid?
Two statements are given below.
Statement I: The reaction Cr$_2$O$_3$ + 2Al → 2Cr + Al$_2$O$_3$ (ΔG° = -421 kJ) is thermodynamically feasible.
Statement II: The above reaction occurs at room temperature.
The correct answer is
Assertion (A): Carboxylic acids are more acidic than phenols.
Reason (R): Resonance structures of carboxylate ion are equivalent, while resonance structures of phenoxide ion are not equivalent.
In the reaction sequence, Y is: \[ CH_3CO_2H \xrightarrow{\text{(1) NH}_3, \text{(2)} \Delta} P \xrightarrow{\text{Br}_2/\text{NaOH}} Y \]
Consider the following reactions. \[ \text{C}_2\text{H}_2 + \text{H}_2\text{O} \xrightarrow[\text{333 K}]{\text{Hg}^{2+}/\text{H}^+} [X] \xrightleftharpoons{\text{Isomerization}} Y \] Y cannot be obtained from which of the following reactions?
What is the major product 'Z' in the following sequence?
major product ’Z’ in the following sequence
Which of the following is NOT correctly matched?
Polymers that can be softened on heating and hardened on cooling are called
The number of –OH groups in open chain and ring structures of D-glucose are respectively
Which of the following is not an example of allylic halide?
Conversion of X to Y is an example of
Conversion of X to Y is an example of
Which of the following is correct statement?
Which of the following solutions is used in the styptic action which prevents bleeding of blood?
‘A’ is a protecting colloid. The following data is obtained for preventing the coagulation of 10 mL of gold sol to which 1 mL of 10% NaCl is added. What is the gold number of ‘A’?
‘A’ is a protecting colloid.
Which complex among the following is most paramagnetic?
The basicity of H$_3$PO$_2$, H$_3$PO$_3$, H$_3$PO$_4$ respectively is
Which of the following reactions of KMnO$_4$ occurs in acidic medium?
The rate constant of a first order reaction was doubled when the temperature was increased from 300 to 310 K. What is its approximate activation energy (in kJ mol\(^{-1}\))?
(R = 8.3 J mol\(^{-1}\) K\(^{-1}\), \(\log 2 = 0.3\))
In water, which of the following gases has the highest Henry’s law constant at 293 K?