List of top Questions asked in TS EAMCET

The oxide of nitrogen, 'X' is a blue solid and is acidic in nature. \( X \) is
Formic acid on heating with concentrated H\(_2\)SO\(_4\) at 373 K gives X, a colourless substance and Y, a good reducing agent. The number of \(\sigma\) and \(\pi\) bonds in X, Y are respectively:

Observe the following formula 

 The groups/atoms in the plane of the paper are

 A few sols are given below:
As2S3 sol, starch sol, Al2O3 ·
xH2O sol, TiO2 sol, gold sol, congo red sol, blood, methylene blue sol, CdS sol
The number of positively charged sols in the above list is:

The metal having the highest melting point among lanthanides is

Match the following elements with their respective blocks in the periodic table:
 

Consider the following reactions: \[ X + \text{O}_2 \;\longrightarrow\; \text{Cu}_2\text{O} + \text{SO}_2 \] \[ \text{Cu}_2\text{O} + 2\,\text{H}_2 \;\longrightarrow\; 2\,\text{Cu} + \text{H}_2\text{O} \] If the molecule \(Y\) is formed in the first reaction, the shape of molecule \(Y\) is:

Match the following: 

Match the following: 

Identify the complex ion with electronic configuration \( t_{2g}^{3} e_{g}^{2} \).
Assertion (A): \( MgO, CaO, SrO, \) and \( BaO \) are insoluble in water.
Reason (R): In aqueous medium, the basic strength of \( MgO, CaO, SrO, \) and \( BaO \) increases with increase in the atomic number of the metal.
The correct option among the following is
The wavenumbers of the first three emission lines of Lyman series of hydrogen spectrum are respectively \( \nu_1, \nu_2, \nu_3 \). Similarly, the wavenumbers of first three emission lines of Balmer series of hydrogen spectrum are \( \nu_4, \nu_5, \nu_6 \), respectively. Identify the correct relationship:
An alkene ‘X’ (C\(_4\)H\(_8\)) does not exhibit cis/trans isomerism. Reaction of ‘X’ with Br\(_2\)/CCL\(_4\), followed by reaction with reagent ‘Y’ gave ‘Z’ (C\(_6\)H\(_6\)). What are ‘Y’ and ‘Z’ respectively?
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.
Which of the following sequence of reagents convert benzaldehyde to 4-chlorotoluene?
At 400 K, the following graph is obtained for \( x \) moles of an ideal gas. \( x \) is equal to (R = gas constant, P = pressure, V = volume)
x moles of an ideal gas
Two statements are given below:
I. Sodium hexametaphosphate is used in calgon method for removal of permanent hardness of water
II. Lithium forms interstitial hydrides
Identify the correct answer
In group 14 elements, the element with highest melting point is X and element with lowest melting point is Y. X and Y respectively are

The variation of volume of an ideal gas with its number of moles (\( n \)) is obtained as a graph at 300 K and 1 atm pressure. What is the slope of the graph? 

What are \( X \) and \( Y \) respectively in the following reactions?

X → CO B2H6 → NaH → (C2H5)2O Y

Options:

  • (1) BH3, 2CO; NaBO2
  • (2) BH3, CO; NaBH4
  • (3) BH3, CO; NaBO2
  • (4) BH3, CO; Na2B4O7

The \( C-O-H \) bond angle in A is \( X \) and \( C-O-C \) bond angle in B is \( Y \). What are X and Y? 

Which of the following gives proof of quantized electronic energy levels in hydrogen atom?
At \( T(K) \), a vessel contains \( V \) litres of an ideal gas. The vessel was partitioned into three equal parts. The volume (in L) and temperature (in K) in each part are respectively

The following graph is obtained for KCl solution at 300 K. What is \( \Lambda_m^0 \) (in S cm² mol\(^{-1}\)) of KCl? 

In which of the following metal extraction, \( CO_2 \) is used?