List of top Chemistry Questions asked in AP EAMCET

Which of the following when added to 20 mL of a 0.01 M solution of HCl would decrease its pH?

If $ v_0 $ is the threshold frequency of a metal X, the correct relation between de Broglie wavelength $ \lambda $ associated with a photoelectron and frequency $ v $ of the incident radiation is:

The correct order of oxidizing power of the given ions is Given: $ E^{\circ}_{\text{Mg}^{2+}/\text{Mg}} = -2.36 \, \text{V} $ and $ E^{\circ}_{\text{Cl}_2/\text{Cl}^-} = +1.36 \, \text{V}$

At $ T(K) $, the solubility product of $ AX $ is $ 10^{-10} $. What is the molar solubility of $ AX $ in 0.1 M HX solution?

Impure silver ore + CN⁻ + H₂O → [X]⁻ + OH⁻
[X]⁻ + Zn → [Y]²⁺ + Ag (pure)
The co-ordination numbers of the metals in [X], [Y] are respectively:

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 major products X and Y respectively from the following reactions are

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

What are X and Y respectively in the following reactions?

A mixture of ethyl iodide and n-propyl iodide is subjected to Wurtz reaction. The hydrocarbon which will not be formed is:

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$^{-1}$)?

Which of the following are correct?
i. Basic structural unit of silicates is –$ \text{-RSiO-} $
ii. Silicones are biocompatible
iii. Producer gas contains CO and $ \text{N}_2 $

What is X in the following reaction?

What are A and B in the following reaction sequence?

What are X and Y respectively in the following reactions?

Among the following species, the correct set of isomolecular pairs are: \[ \mathrm{XeO}_3, \, \mathrm{CO}_3^{2-}, \, \mathrm{SO}_3, \, \mathrm{H}_3\mathrm{O}^+, \, \mathrm{ClF}_3 \]

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 $4 \times 10^2 \, {m/s}$?

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 mass % of urea solution is 6. The total weight of the solution is 1000 g. What is its concentration in mol L$^{-1}$? (Density of water = 1.0 g mL$^{-1}$)
(Given: C = 12u, N = 14u, O = 16u, H = 1u)

Which of the following are general methods for the preparation of 1-iodopropane?