List of top Chemistry Questions asked in TS EAMCET

The correct statements of the following are: A) Aniline forms a stable benzene diazonium chloride at 285K.
B) N - Phenylethanamide is less reactive towards nitration than aniline.
C) p - CH\(_3\)C\(_6\)H\(_4\)COCl is Hinsberg reagent.

Observe the following reaction. This reaction represents: \[ 4HCl + O_2 \xrightarrow{CuCl_2, 723K} 2Cl_2 + 2H_2O \]

Identify the correct statements from the following: (i) Ti (IV) is more stable than Ti (III) and Ti (II)
(ii) Among 3d-series elements (from Z = 22 to 29) only copper has positive reduction potential (\( M^{2+}/M \)) (iii) Both Sc and Zn exhibit +1 oxidation state

Which of the following when subjected to thermal decomposition will liberate dinitrogen? (i) sodium nitrate (ii) ammonium dichromate (iii) barium azide

For a first-order reaction, a plot of \( \ln k \) (y-axis) and \( \frac{1}{T} \) (x-axis) gave a straight line with a slope equal to \( -10^4 \) and an intercept equal to 2.303 (on the y-axis). What is the activation energy \( E_a \) (in kJ/mol) of the reaction? (Given \( R = 8.314 \, \text{J mol}^{-1} \text{K}^{-1} \))

Distilled water boils at 373.15 K and freezes at 273.15 K. A solution of glucose in distilled water boils at 373.202 K. What is the freezing point (in K) of the same solution? (For water, \( K_b = 0.52 \) kg mol\(^{-1}\), \( K_f = 1.86 \) kg mol\(^{-1}\))

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 \( E_{\text{cell}} = \frac{2.303RT}{nF} \log K_c \).

The number of activating and deactivating groups of the following are respectively: \[ -OCH_2CH_3, -COCH_3, -NHCOCH_3, -COOCH_3, -SO_3H \]

Consider the following pairs: (A) NO\(_2\) \(>\) O\(_3\) \(>\) H\(_2\)O (Bond angle)
(B) HF \(>\) H\(_2\)O \(>\) NH\(_3\) (Dipole moment)
(C) I\(_2\) \(>\) F\(_2\) \(>\) N\(_2\) (Bond length) Which of the above pairs are correctly matched?

The standard enthalpy of formation (\(\Delta H_f^\circ\)) of ammonia is -46.2 kJ/mol. What is the \(\Delta H_f^\circ\) of the following reaction? \[ N_2(g) + 3H_2(g) \rightarrow 2NH_3(g) \]

Observe the following reactions: \[ \text{I. } H_2O(l) + 2Na(s) \rightarrow 2NaOH(aq) + H_2(g) \] \[ \text{II. } 2H_2O(l) + 2F_2(g) \rightarrow 4H^+(aq) + 4F^-(aq) + O_2(g) \] Identify the correct statement: