The correct value of cell potential in volts for the reaction that occurs when the following two half cells are connected, is:
\(\mathrm{{Fe}_{ {(aq) }}^{2+}+2 {e}^{-} \rightarrow {Fe}({s}), {E}^{\circ}=-0.44{~V} }\)
\( \mathrm{{Cr}_2 {O}_7^{2-}{ }_{ {(aq) }}+14 {H}^{+}+6 e^{-} \rightarrow 2 {Cr}^{3+}+7 {H}_2 {O}},\)
\( \mathrm{{E}^{\circ}=+1.33 {~V}}\)
1. +1.77 V
2. +2.65 V
3. +0.01 V
4. +0.89 V
\(\mathrm{{Fe}_{ {(aq) }}^{2+}+2 {e}^{-} \rightarrow {Fe}({s}), {E}^{\circ}=-0.44{~V} }\)
\( \mathrm{{Cr}_2 {O}_7^{2-}{ }_{ {(aq) }}+14 {H}^{+}+6 e^{-} \rightarrow 2 {Cr}^{3+}+7 {H}_2 {O}},\)
\( \mathrm{{E}^{\circ}=+1.33 {~V}}\)
1. +1.77 V
2. +2.65 V
3. +0.01 V
4. +0.89 V
Subtopic: Electrode & Electrode Potential |
75%
Level 2: 60%+
NEET - 2023
Hints
Consider the following reactions:
\({R-COOH\xrightarrow[(ii)~H_2O/HCl]{(i)~X}R-CH_2OH }\)
\(\small{R-CH=CH_2\xrightarrow[(ii)~H_2O/ NaOH/ H_2O_2]{(i)~X}R-CH_2-CH_2-OH}\)
Identify 'X' in above reactions:
\({R-COOH\xrightarrow[(ii)~H_2O/HCl]{(i)~X}R-CH_2OH }\)
\(\small{R-CH=CH_2\xrightarrow[(ii)~H_2O/ NaOH/ H_2O_2]{(i)~X}R-CH_2-CH_2-OH}\)
Identify 'X' in above reactions:
| 1. | \(B_2H_6 \) | 2. | \(LiAlH_4 \) |
| 3. | \(NaBH_4 \) | 4. | \(H_2/Pd \) |
Subtopic: Alcohols: Preparation & Properties |
51%
Level 3: 35%-60%
NEET - 2023
Hints
For the reaction:
3A → 2B
The average rate of appearance of B is given by:
Δ[B]/Δt
Find the correct relation between the average rate of appearance of B and the average rate of disappearance of A.
| 1. | \(-\Delta [A] \over \Delta t\) | 2. | \(-3\Delta [A] \over 2\Delta t\) |
| 3. | \(-2\Delta [A] \over 3\Delta t\) | 4. | \(\Delta [A] \over \Delta t\) |
Subtopic: Definition, Rate Constant, Rate Law |
81%
Level 1: 80%+
NEET - 2023
Hints
Mark the name of the reaction associated with the following conversion
1. Stephen reaction
2. Gattermann-Koch reaction
3. Etard reaction
4. Rosenmund reaction
1. Stephen reaction
2. Gattermann-Koch reaction
3. Etard reaction
4. Rosenmund reaction
Subtopic: Name Reaction |
90%
Level 1: 80%+
NEET - 2023
Hints
Which amongst the following is used in controlling depression and hypertension?
| 1. | Seldane | 2. | Valium |
| 3. | Equanil | 4. | Prontosil |
Subtopic: Classification of Medicines |
50%
Level 3: 35%-60%
NEET - 2023
Hints
Which one of the following represents all isoelectronic species?
| 1. | \(\mathrm{Na^+ , Cl^-, O^- , NO^+}\) | 2. | \(\mathrm{N_2O, N_2O_4 , NO^+, NO}\) |
| 3. | \(\mathrm{Na^+ , Mg^{2+} , O^- , F^-}\) | 4. | \(\mathrm{Ca^{2+} , Ar, K^+, Cl^-}\) |
Subtopic: Ionization Energy (IE) |
77%
Level 2: 60%+
NEET - 2023
Hints
Given below are two statements:
In light of the above statements, choose the correct answer from the options given below:
| Statement I: | The value of wave function, \(\Psi\) depends upon the coordinates of the electron in the atom. |
| Statement II: | The probability of finding an electron at a point within an atom is proportional to the orbital wave function. |
| 1. | Statement I is True but Statement II is False. |
| 2. | Statement I is False but Statement II is True. |
| 3. | Both Statement I and Statement II are True. |
| 4. | Both Statement I and Statement II are False. |
Subtopic: Quantum Numbers & Schrodinger Wave Equation |
Level 3: 35%-60%
NEET - 2023
Hints
The correct van der Waals equation for 1 mole of a real gas is:
1. \((P+{a \over V^2})(V-b) =RT\)
2. \((P+{V^2 \over a})(V-b) =RT\)
3. \((P+{an^2 \over V^2})(V^2-nb) =RT\)
4. \((P+{an^2 \over V})(V-nb) =nRT\)
1. \((P+{a \over V^2})(V-b) =RT\)
2. \((P+{V^2 \over a})(V-b) =RT\)
3. \((P+{an^2 \over V^2})(V^2-nb) =RT\)
4. \((P+{an^2 \over V})(V-nb) =nRT\)
Subtopic: van der Waal’s Correction |
53%
Level 3: 35%-60%
NEET - 2023
Hints
The correct option in which the density of argon (Atomic mass =40) is highest:
| 1. | STP | 2. | 0°C, 2 atm |
| 3. | 0°C, 4 atm | 4. | 273°C, 4 atm |
Subtopic: Gas Laws |
57%
Level 3: 35%-60%
NEET - 2023
Hints
Which of the following pair is correctly matched?
1. Basic oxides - \(\mathrm{In_2O_3 , K_2O , SnO_2}\)
2. Neutral oxides - \(\mathrm{CO, NO_2, N_2O}\)
3. Acidic oxides - \(\mathrm{Mn_2O_7, SO_2, TeO_3}\)
4. Amphoteric oxides -\(\mathrm{BeO , Ga_2O_3 , GeO }\)
1. Basic oxides - \(\mathrm{In_2O_3 , K_2O , SnO_2}\)
2. Neutral oxides - \(\mathrm{CO, NO_2, N_2O}\)
3. Acidic oxides - \(\mathrm{Mn_2O_7, SO_2, TeO_3}\)
4. Amphoteric oxides -\(\mathrm{BeO , Ga_2O_3 , GeO }\)
Subtopic: Nature of Compound |
Level 3: 35%-60%
NEET - 2023
Hints
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