List of top Chemistry Questions asked in TS EAMCET

Consider the following reactions \[ \text{Borax} \xrightarrow{\mathrm{H_2O}} A+B \] \[ \text{Borax} \xrightarrow[\mathrm{HCl}]{\mathrm{H_2O}} B+C \] Which of the following are the properties of \(A\), \(B\), \(C\)? \[ \begin{aligned} \text{I. }& \text{Both }A,B\text{ are strong bases} \text{II. }& B\text{ is a white crystalline solid with soapy touch} \text{III. }& C\text{ is water soluble} \end{aligned} \] The correct answer is

Borax is Na$_2$B$_4$O$_7\cdot xH_2O$ and Kernite is Na$_2$B$_4$O$_7\cdot yH_2O$. Find (x − y).

For a first order reaction, rate constants at \(50^\circ\mathrm{C}\) and \(100^\circ\mathrm{C}\) are \(1.5\times10^{-5}\,\mathrm{s^{-1}}\) and \(4.5\times10^{-5}\,\mathrm{s^{-1}}\), respectively. What is the approximate activation energy of the reaction (in \(\mathrm{kJ\,mol^{-1}}\))? \[ (\log3=0.48,\;R=8.3\ \mathrm{J\,mol^{-1}K^{-1}}) \]

Given below are two statements Statement--I: The number of water molecules associated with \(\mathrm{LiCl}\), \(\mathrm{NaCl}\), \(\mathrm{CaCl_2}\) are \(2,\ 2,\ 6\) respectively. Statement--II: Both \(\mathrm{LiCl}\) and \(\mathrm{MgCl_2}\) are soluble in ethanol. The correct answer is

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):

Observe the given two statements about \(\alpha\)-particle experiment and Rutherford assumptions. Statement-I: The ratio of atomic radius to its nuclear radius is \(10^5\). Statement-II: In an atom, the majority of the space is vacant. The correct answer is

$\text{KMnO}_4$ oxidizes $\text{M}^{2+}$ to $\text{M}^{4+}$ in acid medium. $500\text{ mL}$ of $0.02\text{M}$ $\text{M}^{2+}$ solution requires $500\text{ mL}$ of $x\text{ M}$ $\text{MnO}_4^-$ solution for complete oxidation. The value of $x$ is:}

Which of the following are Position isomers?

A gaseous mixture contains $\text{H}_2$ and $\text{O}_2$. The pressure of the mixture is $1\text{ bar}$. The weight percentage of $\text{O}_2$ is 80. The ratio of partial pressures of $\text{H}_2$ and $\text{O}_2$ is:

AB crystalizes in a bcc lattice. If the distance between two oppositely charged ions in the lattice is 335 pm, then the edge length of it (in pm) is

$\text{BF}_3$ reacts with $\text{NH}_3$ in 1:1 ratio and gives 'X'. The hybridization and geometry around B and N atoms in 'X' respectively are:

Identify the correct statements about Eutrophication
• [I.] It takes place in air
• [II.] It is due to excess oxygen in water
• [III.] It occurs in water
• [IV.] It leads to the destruction of aquatic life The correct answer is

The compound X can be separated from spent-lye in soap industry by using distillation under reduced pressure. What is X?

The oxidation state of Mn in $KMnO_4$ is:

Which one of the following statements is not correct regarding interhalogen compounds?

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

10 L vessel contains He (0.4 g), O$_2$ (1.6 g), N$_2$ (1.4 g). Find partial pressure of He at 300 K.

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

Which of the following is NOT correctly matched with its common name?

What is the amino acid which does not contain $-\text{NH}_2$ group in its structure?}

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

Which of the following does not exist?

Which of the following does not exist?

Identify the reaction that takes place in the blast furnace at \(1570\,\mathrm{K}-2170\,\mathrm{K}\).