List of top Chemistry Questions asked in TS EAMCET

Assertion (A): The ionic radii of \( Na^+ \) and \( F^- \) are the same. 
Reason (R): Both \( Na^+ \) and \( F^- \) are isoelectronic species. 

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? 

Observe the following reaction: \[ 2KClO_3 (s) \xrightarrow{\Delta} 2KCl (s) + 3O_2 (g) \] In this reaction: 

The \( \Delta_f H^\theta \) of \( AO_3(s) \), \( BO_2(s) \), and \( ABO_3(s) \) is -635, \( x \), and -1210 kJ mol\(^{-1}\) respectively. The reaction:

\( ABO_3 (s) \rightarrow AO_3 (s) + BO_2 (g) \)

Has an enthalpy change of \( \Delta_r H^\theta = 175 \) kJ mol\(^{-1}\). What is the value of \( x \) (in kJ mol\(^{-1}\))?

At 27°C, 100 mL of 0.5 M HCl is mixed with 100 mL of 0.4 M NaOH solution. To this resultant solution, 800 mL of distilled water is added. What is the pH of the final solution? 

The proper conditions of storing \( H_2O_2 \) are:

(1) Placing in wax-lined plastic bottle and kept in a dark
(2) Placing in a wax-lined plastic bottle and exposed to light
(3) Placing in a wax-lined plastic bottle containing traces of base
(4) Placing in metal vessel and exposed to light

The standard electrode potentials \( E^\circ (V) \) for \( Li^+/Li \), \( Na^+/Na \) respectively are:

(1) −3.04, −2.714
(2) −2.714, −3.04
(3) −3.04, −3.04
(4) −2.714, −2.714

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

Which of the following statements are correct?

i) \( CCl_4 \) undergoes hydrolysis easily.
(ii) Diamond has directional covalent bonds.
(iii)Fullerene is the thermodynamically most stable allotrope of carbon.
(iv)Glass is a man-made silicate.
 

Which of the following industries generate non-biodegradable wastes?

1) Cotton mills
(2) Paper mills
(3) Thermal power plants
(4) Textile factories

The alkane which is next to methane in the homologous series can be prepared from which of the following reactions? 

At high pressure and regulated supply of air, methane is heated with catalyst ‘X’ to give methanol and with catalyst ‘Y’ to give methanal. \( X \) and \( Y \) respectively are:

What is ‘Y’ in the following set of reactions?

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? 

Two statements are given below: Statement I: Molten NaCl is electrolysed using Pt electrodes. \( Cl_2 \) is liberated at the anode. 
Statement II: Aqueous CuSO\(_4\) is electrolysed using Pt electrodes. \( O_2 \) is liberated at the cathode. The correct answer is:

For a first-order reaction, the graph between \( \log \frac{a}{(a - x)} \) (on y-axis) and time (in min, on x-axis) gave a straight line passing through the origin. The slope is \( 2 \times 10^{-3} \) min\(^{-1}\). What is the rate constant (in min\(^{-1}\))?

In Haber’s process of manufacture of ammonia, the ‘catalyst’, the ‘promoter’, and‘ poison for the catalyst’ are respectively:

Among the following, the calcination process is: 

The correct order of boiling points of hydrogen halides is: 

Observe the following reactions (unbalanced): 

\( P_2O_3 + H_2O \rightarrow X \)

\( P_4O_{10} + H_2O \rightarrow Y \)

The number of \( P=O \) bonds present in \( X, Y \) are respectively: