List of top Chemistry Questions asked in TS EAMCET

The molar conductivity of 0.02 M solution of an electrolyte is \( 124 \times 10^{-4} \) S m\(^{2}\) mol\(^{-1}\). What is the resistance of the same solution (in ohms), kept in a cell of cell constant 129 m\(^{-1}\)?
Identify the correct statements from the following: A) At 298 K, the potential of the hydrogen electrode placed in a solution of pH = 10 is -0.59 V.
B) The limiting molar conductivity of \( \text{Ca}^{2+} \) and \( \text{Cl}^- \) is 119 and 76 \( \text{S cm}^2 \text{mol}^{-1} \), respectively. The limiting molar conductivity of \( \text{CaCl}_2 \) is 195 \( \text{S cm}^2 \text{mol}^{-1} \).
C) The correct relationship between \( K_c \) and \( E_{\text{cell}} \) is \( E_{\text{cell}} = \frac{2.303RT}{nF} \log K_c \).

Match the following: 

Which of the following will have a spin-only magnetic moment of 2.86 BM?
The pK\(_a\) values of X, Y, Z respectively are 8.3, 7.1, 10.2. What are X, Y, Z?

Identify the set, in which X and Y are correctly matched:

Arrange the following in the increasing order of pKa values. 

If \(n\) and \(l\) represent the principal and azimuthal quantum numbers respectively, the formula used to know the number of radial nodes possible for a given orbital is:
The kinetic energy of electrons emitted, when radiation of frequency \( 1.0 \times 10^{15} \) Hz hits a metal, is \( 2 \times 10^{-19} \) J. What is the threshold frequency of the metal (in Hz)? (\( h = 6.6 \times 10^{-34} \) Js)
Which of the following sets of oxides are correctly matched?

What is the percentage of carbon in the product 'Z' formed in the reaction? 

Which of the following is correct statement?
Which of the following oxoacids of phosphorus has two P-H bonds?
The standard enthalpy of combustion of C (graphite), H\(_2\) (g) and CH\(_3\)OH (l) respectively are \(-393\), \(-286\) and \(-726\) kJ mol\(^{-1}\). What is the standard enthalpy of formation of methanol?
0.592 g of copper is deposited in 60 minutes by passing 0.5 amperes current through a solution of copper (II) sulphate. The electro chemical equivalent of copper (II) in g/C is:
The functional groups involved in the conversion of glucose to gluconic acid and gluconic acid to saccharic acid respectively are:

At T(K), 0.1 moles of a non-volatile solute was dissolved in 0.9 moles of a volatile solvent. The vapour pressure of pure solvent is 0.9 . What is the vapour pressure (in ) of the solution? 

Electromagnetic radiation has electric and magnetic field components. These two components:
Given below are the two statements regarding chlorobenzene
Statement I: Chlorobenzene is less reactive than benzene towards electrophilic substitution due to the -I effect of chlorine.
Statement II: Because of the -I effect of chlorine, it is a meta directing group.
The first ionization enthalpies of the elements X, Y, Z of the second period are 899, 1402, 520 kJ/mol respectively. X, Y, Z respectively are:
In which of the following species, the ratio of s-electrons to p-electrons is the same?
The number of molecules with electrophilic centres in the following is CH\(_3\)CH\(_2\)Br, CH\(_3\)COCH\(_3\), CH\(_3\)CH\(_2\)CN, (CH\(_3\))\(_2\)Cd

What are X and Y respectively in the following reactions? 

Conversion of X to Y in the given reaction corresponds to:

What is the percentage of carbon in the product ‘X’ formed in the following reaction?