List of top Chemistry Questions asked in TS EAMCET

At 298 K for reaction \(X \rightleftharpoons Y\), if \(\Delta H^\circ=28.4\;kJ\) and equilibrium constant is \(10^{-7}\), then the standard entropy change for the reaction is:

Identify the option in which elements are correctly arranged in the increasing order of their electronegativity values.

Identify the correct sets of inner transition elements. \[ \text{I. } \mathrm{Nb,\ W,\ Sg} \] \[ \text{II. } \mathrm{Hs,\ Mt,\ Ds} \] \[ \text{III. } \mathrm{Tb,\ Dy,\ Cf} \] \[ \text{IV. } \mathrm{Nd,\ Bk,\ Es} \] The correct answer is (only):

In which of the following sets, the central atom of both the molecules does not obey the octet rule? \[ \text{I. } \mathrm{SF_4,\ XeF_4} \] \[ \text{II. } \mathrm{SCl_2,\ H_2S} \] \[ \text{III. } \mathrm{SnCl_2,\ XeO_3} \] The correct answer is (only):

The ratio of number of bonding electrons to antibonding electrons in \(O_2^+\) is:

If the radius of orbit \(x\) of \(\mathrm{He}^{+}\) (\(Z=2\)) is \(238.05\,\text{pm}\), then the energy of the same orbit (in kJ) is:

In dipositive zinc ion, the number of electrons with \(l=1,\;m=0\) is \(x\), and the number of electrons with \(l=2,\;m=-1\) is \(y\). The sum \(x+y\) is equal to:

Which of the following is not a periodic property?

The number of radial nodes in 3s and 2p orbitals, respectively are

The order of the average bond length of the given bonds is

A balloon filled with an air sample occupies 3 L volume at 35 °C. On lowering the temperature to T, the volume decreases to 2.5 L. The temperature T is [Assume P constant]

100 g of a mixture of $NaOH$ and $Na_{2}SO_{4}$ is neutralized by 100 ml of 0.5M $H_{2}SO_{4}$. What is the amount of $Na_{2}SO_{4}$ present in the mixture?}

The shapes of $BrF_{5}$ and $XeF_{4}$, respectively are}

Metamerism can be exhibited by the compounds containing

Which of the following is not a periodic property?

The number of radial nodes in 3s and 2p orbitals, respectively are

Which of the following mixture form an ideal solution?

Which of the following does not exist?

A balloon filled with an air sample occupies 3 L volume at 35 °C. On lowering the temperature to T, the volume decreases to 2.5 L. The temperature T is [Assume P constant]

The order of the average bond length of the given bonds is

Which of the following is an amphoteric oxide?

The order of negative standard potential values of \(\text{Li}\), \(\text{Na}\), \(\text{K}\) is

Highest boiling point among these isomers (C$_{5}$H$_{12}$):

The half-life of a radioactive substance is 10 days. After 30 days, fraction remaining is:

Which colligative property is used to determine molar mass of polymers?