List of top Chemistry Questions asked in TS EAMCET

The heights of the transmitting and receiving antennas are 33.8 m and 64.8 m respectively. The maximum distance between the antennas for satisfactory communication in line of sight mode is:
(Radius of the earth = 6400 km)
Identify the pair of species having the same energy from the following: (The number given in the bracket corresponds to the principal quantum number (n) in which the electron is present.)
Which one of the following corresponds to the wavelength of line spectrum of H atom in its Balmer series? (R = Rydberg constant)
Identify the pair of elements in which the number of s-electrons to p-electrons ratio is 2:3:
At 400 K, an ideal gas is enclosed in a 0.5 m\(^3\) vessel at a pressure of 203 kPa. What is the change in temperature required (in K), if it occupies a volume of 0.2 m\(^3\) under a pressure of 304 kPa? (Nearest integer)
The major components of cement are:
Which of the following does not exist?

The set of elements which obey the general electronic configuration \( (n-1)d^{10} ns^2 \) is:}

Consider the following (unbalanced) reactions:

\[ \text{BF}_3 + \text{NaH} \xrightarrow{450\,\mathrm{K}} X + \text{NaF} \]

\[ X + \text{H}_2\text{O} \rightarrow Y + \text{H}_2 \uparrow \]

The correct statements about \(X\) and \(Y\) are:

  1. \(X\) is an electron-deficient molecule
  2. In \(X\), a B--B bond is present
  3. \(Y\) is a weak tribasic acid
  4. \(Y\) acts as a Lewis acid
Methemoglobinemia is due to:
Identify the set of molecules which are not in the correct order of their dipole moments.

Match the following molecules with their respective molecular shapes:

The dihedral angles in gaseous and solid phases of H\(_2\)O\(_2\) molecule respectively are
Identify the compound which gives CO\(_2\) more readily on heating.

The IUPAC name of the following compound is: 

 The functional groups present in the product ‘X’ of the reaction given below are:

In which of the following ionic pairs, the second ion is smaller in size than the first ion?
The uncertainty in the determination of the position of a small ball of mass 10 g is \(10^{-33}\) m. With what \% of accuracy can its speed be measured, if it has a speed of 52.5 m s\(^{-1}\)?
Identify the pair in which the difference in bond order value is maximum.
The pair of molecules/ions with same geometry but central atoms in different states of hybridization is:
Which of the following is an example of allylic halide?
If the density of a mixture of nitrogen and oxygen gases at 400 K and 1 atm pressure is 0.920 g L\(^{-1}\), what is the mole fraction of nitrogen in the mixture?
In the given sequence of reactions: \[ \text{P}_4 + \text{NaOH} + \text{H}_2\text{O} \;\longrightarrow\; \dots \;\longrightarrow\; X \;+\; 2\,\text{NaH}_2\text{PO}_2 \;\longrightarrow\; \dots \] The final product obtained with copper and \(\text{H}_2\text{SO}_4\) is:

The correct IUPAC name of the given compound is:

In the contact process of manufacturing \(\text{H}_2\text{SO}_4\), the arsenic purifier used in the industrial plant contains: