List of top Chemistry Questions asked in AP EAMCET

The standard free energy change ($ \Delta G^\circ $) for the following reaction (in kJ) at 25°C is \[ 3Ca(s) + 2 Au^{+}(aq, 1M) \rightleftharpoons 3Ca^{2+}(aq, 1M) + 2Au(s) \] (given: $ E^\circ_{{Au}^{3+/2+}} = +1.50 \, V $, $ E^\circ_{{Ca}^{2+/Ca}} = -2.87 \, V $, $ F = 96500 \, {C mol}^{-1} $)

The rate constant of a first-order reaction is $ 3.46 \times 10^3 \, {s}^{-1} $ at 298K. What is the rate constant of the reaction at 350 K if its activation energy is 50.1 kJ mol$^{-1}$ (R = 8.314 J K$^{-1}$ mol$^{-1}$)?

The correct statement regarding chemisorption is

Which of the following is incorrectly matched?

In the reaction of sulfur with concentrated sulfuric acid, the oxidised product is X and reduced product is Y. X and Y are respectively:

Which of the following lanthanides have [Xe] 4f⁵ 5d¹ 6s² configuration in their ground state?

How many of the following ligands are stronger than H₂O? \[ {S}^{2-}, \, {Br}^-, \, {C}_2{O}_4^{2-}, \, {CN}^-, \, {en}, \, {NH}_3, \, {CO}, \, {OH}^- \]

The common monomer for both Terylene and Glyptal is

Which of the following structure of proteins represents its constitution?

Match the following

At $ 27^\circ C $, the degree of dissociation of weak acid (HA) in its 0.5M aqueous solution is 1%. Its $ K_a $ value is approximately:

From the following, identify the groups that exhibit negative resonance (-R) effect when attached to a conjugated system: \[ \text{Formyl (A), Amino (B), Alkoxy (C), Cyano (D), Nitro (E)} \]

The major products X and Y respectively from the following reactions are

An isomer of C₆H₁₂ on reaction with Br₂/ light gave only one isomer C₆H₁₁Br (X). Reaction of X with AgNO₃ gave Y as the major product. What is Y?

What are the major products X and Y respectively in the following reactions? \[ {(CH}_3{)}_3{COONa} + {CH}_2 {CH} {Br} \rightarrow X \] \[ {(CH}_3{)}_3{COCH}_2 {CH}_3 + {CH}_3{COO}{Na} \rightarrow Y \]

Match the following reagents with the products obtained when they react with a ketone:

What are X and Y respectively in the following reactions?

Arrange the following in decreasing order of their basicity:

A dibromide $ X (C_4H_8Br_2) $ on dehydrohalogenation gave $ Y $, which on reduction with $ Z $ gave a non-polar isomer of $ C_4H_8 $. What are $ X $ and $ Z $ respectively?

Which of the following is correct statement?

At STP $x$ g of a metal hydrogen carbonate (MHCO$_3$) (molar mass $84 \, {g/mol}$) on heating gives CO$_2$, which can completely react with $0.02 \, {moles}$ of MOH (molar mass $40 \, {g/mol}$) to give MHCO$_3$. The value of $x$ is:

The following data is obtained for coagulating a positively charged sol in 2 hours:

What is the coagulating value of electrolyte for this sol?

Which of the following molecules is not having glycosidic linkage?

What is the kinetic energy (in $ {J/mol} $) of one mole of an ideal gas (molar mass = $0.01 \, {kg/mol}$) if its rms velocity is $4 \times 10^2 \, {m/s}$?

The bond lengths of diatomic molecules of elements X, Y, and Z respectively are 143, 110, and 121 pm. The atomic numbers of X, Y, and Z respectively are: