List of top Chemistry Questions asked in TS EAMCET

In hydrogen atom, electron is present in $n_x$ state. The energy of Lyman spectral line of hydrogen spectrum originated from $n_x$ state is $1.635 \times 10^{-18}\text{ J}$. What is the approximate energy (in J) required to excite this electron from $n_x$ state to $(n_x+1)$ state?
The electron and hole concentrations in a semiconductor are $5 \times 10^{18}\text{ m}^{-3}$ and $8 \times 10^{19}\text{ m}^{-3}$ respectively. If the mobilities of the electron and hole are $0.24\text{ m}^2\text{V}^{-1}\text{s}^{-1}$ and $0.01\text{ m}^2\text{V}^{-1}\text{s}^{-1}$ respectively, then the conductivity of the semiconductor is:
If the radius of $_{13}\text{Al}^{27}$ nucleus is $3.6\text{ fm}$, then the number of neutrons in a nucleus of atomic number $29$ and radius $4.8\text{ fm}$ is:
Which of the following statements about \(C_6H_5N_2BF_4\) are correct? I. With NaF gives \(C_6H_5F\) II. With NaNO\(_2\)/Cu gives \(C_6H_5NO_2\) III. On heating gives \(C_6H_5F\) IV. With HNO\(_3\) gives \(C_6H_5NO_2\)
What are C and E in the following reaction sequence?
Rate determining step in the following reactions I and II respectively is
Identify correct set(s) of X, Y, Z in the following reaction sequence. \[ Styrene \xrightarrow{(C_6H_5CO)_2O_2, HBr} Product \xrightarrow{(ii)X} \xrightarrow{(iii)Y} Z \]
The detergent used in tooth pastes is 'X' and in hair conditioners is 'Y'. What are X and Y respectively?
Glycosidic linkage in maltose is present between
Benzene gets converted to X in reaction (A) and Y in reaction (B). X is oxidized by ammoniacal AgNO\(_3\) but Y is not. Identify A and B.
What are X, Y, Z in the following reactions?
In which of the following sets, the reaction and catalyst are correctly matched?
Observe the following reactions
Which are common for both Y and W? I. Four P-OH bonds II. Two P-H bonds III. Two \(P=O\) bonds IV. One P-O-P bond
Which of the following exhibit optical isomerism? I. \([Fe(C_2O_4)_3]^{3-}\) II. \([Cr(H_2O)_4Cl_2]^+\) III. \([Co(NH_3)_2(en)_2]^{3+}\)
Match the following orders with their properties.
What are X and Y in the following reactions? \[ 2X_2(g)+2H_2O(l)\rightarrow4H^+(aq)+4X^-(aq)+O_2(g) \] \[ Y_2(g)+H_2O(l)\rightarrow HY(aq)+HOY(aq) \]
Natural rubber is the addition polymer of monomer X and neoprene is the addition polymer of monomer Y. What are X and Y respectively?
Given below are two statements Statement-I: Rate of first order reaction decreases with time Statement-II: Rate of zero order reaction decreases with time
The metal refined by Mond process is X and the metal refined by Van Arkel method is Y. What are X and Y respectively?
The following reaction takes place in a galvanic cell \[ 2Cr(s)+3Cd^{2+}(aq)\rightarrow2Cr^{3+}(aq)+3Cd(s) \] What is \(\Delta_rG^\circ\) of this cell? Given: \[ F=96500~Cmol^{-1} \] \[ E_{Cd^{2+}/Cd}^{\circ}=-0.4V \] \[ E_{Cr^{3+}/Cr}^{\circ}=-0.74V \]
Gold number of a protective colloid A is x. A mixture is prepared by adding 50 mL of 10% NaCl solution to 500 mL gold sol. What minimum mass of A is needed to prevent coagulation?
A water sample is contaminated with compound X (molar mass \(=120g~mol^{-1}\)). Its molality is \(10^{-4}m\). What is its concentration in ppm?
Identify the edge lengths \((a,b,c)\) in the unit cell shown below.
Which of the following are Position isomers?
Observe the reaction set and identify A and D.