List of top Chemistry Questions asked in TS EAMCET

At T(K) in a saturated solution of MgCO$_3$ and Ag$_2$CO$_3$, if the concentration of Mg$^{2+}$ ion is $3.2\times10^{-5}$ M, then the concentration of Ag$^+$ ion in the solution will be [Given: $K_{sp}(MgCO_3)=1.6\times10^{-6}$ and $K_{sp}(Ag_2CO_3)=8.0\times10^{-12}$ at T(K)]
In which of the following, oxidation state of nitrogen is lowest?
At 298K, a flask 'A' of unknown volume (V) contains oxygen at 5 atm. Another flask 'B' of volume 2L contains helium at 3 atm. Two flasks are connected together by a small tube of zero volume. After the two gases are completely mixed, if the resulting mixture is found to have the mole fraction of oxygen as 0.2, the volume of flask 'A' (in L) is (Assume oxygen and helium as ideal gases)
If the sum of bond orders of O$_2$ and O$_2^-$ is x, then bond order of O$_2^+$ will be
In the atomic spectrum of hydrogen, the wavelengths of the spectral lines corresponding to electronic transitions (i) n = 4 to n = 2 and (ii) n = 3 to n = 1 are $\lambda_1$ and $\lambda_2$ \AA{}respectively. The value of $(\lambda_1 - \lambda_2)$ (in cm) is ($R_H$ = Rydberg constant)
In hydrogen atom, an electron is transferred from an orbit of radius $1.3225$ nm to another orbit of radius $0.2116$ nm. What is the energy (in J) of emitted radiation? (Rydberg constant $R_H \approx 1.097 \times 10^7 \text{ m}^{-1}$)
Which of the following processes are reversible? I. Vaporization of a liquid at its boiling point. II. Expansion of gas into vacuum. III. Transformation of a solid substance into liquid at its melting point. IV. Neutralization of an acid by a base.
Identify the molecule / ion in which the ratio of $\sigma$ to $\pi$ bonds is 3:2
In second period of the modern periodic table, two elements X and Y have higher first ionization enthalpy values than the preceding and succeeding elements. X and Y are respectively
Consider the following pairs of elements and identify the pairs of elements which have nearly same atomic radius. I. Y, La II. Zr, Hf III. Mo, W IV. Cr, Mo
Observe the following set of reactions

What are $\text{X}, \text{Y}$ and $\text{Z}$ respectively?
Consider the following set of reactions.
$\text{C}_6\text{H}_5\text{CN} \xrightarrow{\text{B}} \text{Y} \xrightarrow{\text{A}} \text{X} (\text{reacts with } 2,4\text{-DNP})$
$\text{C}_6\text{H}_5\text{CN} \xrightarrow{\text{A}} \text{X} (\text{dissolves in dil. } \text{HCl})$
What are A and B respectively?
What is the major product 'Z' in the given reaction sequence?


What is the product 'Z' in the given sequence of reactions?
Arrange the following molecules in the correct order of their bond angles:

Sodium metal crystallises in a body centred cubic lattice with edge length of x Å. If the radius of sodium atom is 1.86 Å, the value of x is
Identify the correct statements from the following
I. LiF is less soluble in water than NaF
II. Both LiCl and MgCl\(_2\) are insoluble in ethanol
III. Both Li and Mg form nitrides
IV. Na\(_2\)CO\(_3\) gives CO\(_2\) on heating
In which of the following, the compounds are correctly arranged in the decreasing order of boiling points?
In which of the following options, the molecules are correctly arranged in the increasing order of their bond angles?
Which of the following is not an aromatic species?
Choose the correct statements about allotropes of carbon I. Graphite has layered structure II. Buckminster fullerene is not aromatic in nature III. The distance between two adjacent layers in graphite is 141.5 pm IV. The hybridization of carbons in graphite and Buckminster fullerene is same
Work functions of four metals M$_1$, M$_2$, M$_3$ and M$_4$ are 4.8, 4.3, 4.75 and 3.75 eV respectively. The metals which do not show photoelectric effect when light of wavelength 310 nm falls on the metals are
What are X and Y in the following reaction sequence?
$C_6H_5N_2Cl \xrightarrow[H_2O]{283K} X \xrightarrow[OH^-]{C_6H_5N_2Cl} Y$
Which of the following sets of reagents are required for the conversion of ethyl bromide to propanoic acid?
Two reactions I and II are given below:
Correct statement regarding the reactions is