Match List-I with List-II:
Choose the correct answer from the options given below:
| (List-I) Solid salt treated with dil. \(\mathrm{{H}_2 {SO}_4}\) |
(List-II ) Anion detected |
||
| A. | Effervescence of colourless gas | I. | \( \mathrm{NO}_2^{-} \) |
| B. | Gas with smell of rotten egg | II. | \(\mathrm{CO}_3^{2-} \) |
| C. | Gas with pungent smell | III. | \(\mathrm{S}^{2-}\) |
| D. | Brown fumes | IV. | \(\mathrm{SO}_3^{2-}\) |
| 1. | A-II, B-III, C-IV, D-I | 2. | A-IV, B-III, C-II, D-I |
| 3. | A-I, B-II, C-III, D-IV | 4. | A-II, B-III, C-I, D-IV |
Subtopic: Detection of Anions |
75%
Level 2: 60%+
NEET - 2024
Hints
The ratio of solubility of \(\mathrm{AgCl}\) in \(0.1~ \mathrm{M} ~\mathrm{KCl}\) solution to the solubility of \( \mathrm{Ag} \mathrm{Cl}\) in water is:
(Given: Solubility product of \(\mathrm{AgCl}=10^{-10}\) )
(Given: Solubility product of \(\mathrm{AgCl}=10^{-10}\) )
| 1. | \(10^{-4}\) | 2. | \(10^{-6}\) |
| 3. | \(10^{-9}\) | 4. | \(10^{-5}\) |
Subtopic: Solubility Product |
50%
Level 3: 35%-60%
NEET - 2024
Hints
On complete combustion, \(0.3 \mathrm{~g}\) of an organic compound gave \(0.2 \mathrm{~g}\) of \(\mathrm{CO}_2~ \mathrm{and}~ 0.1 \mathrm{~g}\) of \(\mathrm{H}_2 \mathrm{O}\). The percentage composition of carbon and hydrogen in the compound, respectively is:
1. \(4.07 \% ~\mathrm{and}~ 15.02 \%\)
2. \(18.18 \% ~\mathrm{and}~ 3.70 \%\)
3. \(15.02 \% ~\mathrm{and}~ 4.07 \%\)
4. \(3.70 \% ~\mathrm{and}~ 18.18 \%\)
1. \(4.07 \% ~\mathrm{and}~ 15.02 \%\)
2. \(18.18 \% ~\mathrm{and}~ 3.70 \%\)
3. \(15.02 \% ~\mathrm{and}~ 4.07 \%\)
4. \(3.70 \% ~\mathrm{and}~ 18.18 \%\)
Subtopic: Quantitative Analysis of Organic Compounds |
74%
Level 2: 60%+
NEET - 2024
Hints
Consider the following reaction:
The reaction method given above is not suitable for the preparation of the corresponding haloarene products due to high reactivity of halogen when X is:
The reaction method given above is not suitable for the preparation of the corresponding haloarene products due to high reactivity of halogen when X is:
| 1. | F | 2. | I |
| 3. | Cl | 4. | Br |
Subtopic: Chemical Properties |
78%
Level 2: 60%+
NEET - 2024
Hints
The alkane that can be oxidized to the corresponding alcohol by \(\mathrm{KMnO}_4\) as per the equation
is, when:
1. \( \mathrm{{R}_1={H} ;~ {R}_2={H} ;~ {R}_3={H}} \)
2. \( \mathrm{{R}_1={CH}_3 ;~ {R}_2={CH}_3 ;~ {R}_3={CH}_3} \)
3. \( \mathrm{{R}_1={CH}_3 ;~ {R}_2={H} ;~ {R}_3={H}}\)
4. \(\mathrm{{R}_1={CH}_3 ;~ {R}_2={CH}_3 ;~ {R}_3={H}}\)
is, when:
1. \( \mathrm{{R}_1={H} ;~ {R}_2={H} ;~ {R}_3={H}} \)
2. \( \mathrm{{R}_1={CH}_3 ;~ {R}_2={CH}_3 ;~ {R}_3={CH}_3} \)
3. \( \mathrm{{R}_1={CH}_3 ;~ {R}_2={H} ;~ {R}_3={H}}\)
4. \(\mathrm{{R}_1={CH}_3 ;~ {R}_2={CH}_3 ;~ {R}_3={H}}\)
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
76%
Level 2: 60%+
NEET - 2024
Hints
Consider the following reaction:
\(\mathrm{A}_2(\mathrm{~g})+3 \mathrm{~B}_2(\mathrm{~g}) \rightarrow 2 \mathrm{AB}_3(\mathrm{~g})\)
If at 300K, the enthalpy change for the above reaction is +15 kJ, then the internal energy change is:
\(\mathrm{A}_2(\mathrm{~g})+3 \mathrm{~B}_2(\mathrm{~g}) \rightarrow 2 \mathrm{AB}_3(\mathrm{~g})\)
If at 300K, the enthalpy change for the above reaction is +15 kJ, then the internal energy change is:
| 1. | 19.98 K J | 2. | 200 J |
| 3. | 1999 J | 4. | 1.9988 kJ |
Subtopic: Enthalpy & Internal energy |
77%
Level 2: 60%+
NEET - 2024
Hints
Rate constants of a reaction at 500 K and 700 K are 0.04 \(s^{-1}\) and 0.14 \(s^{-1}\) respectively, then the activation energy of the reaction is:
[Given: log 3.5 = 0.5441, R = \(8.31 \text J\text K^{-1} \text{mol}^{-1}\) ]
1. 18231 J
2. 18500 J
3. 18219 J
4. 18030 J
[Given: log 3.5 = 0.5441, R = \(8.31 \text J\text K^{-1} \text{mol}^{-1}\) ]
1. 18231 J
2. 18500 J
3. 18219 J
4. 18030 J
Subtopic: Arrhenius Equation |
Level 3: 35%-60%
NEET - 2024
Hints
What mass of glucose (C₆H₁₂O₆) must be dissolved in 1 liter of solution to make it isotonic with a 15 g/L solution of urea (NH₂CONH₂)?
(Given : Molar mass in g \(\mathrm{mol}^{-1}\) C:12, H:1, O: 16, N:14)1. 55 g
2. 15 g
3. 30 g
4. 45 g
Subtopic: Concentration Terms & Henry's Law | Osmosis & Osmotic Pressure |
78%
Level 2: 60%+
NEET - 2024
Hints
Identify the structural features common to [Mn₂(CO)₁₀] and [Co₂(CO)₈]:
A. Presence of a metal-metal bond
B. Presence of terminal carbonyl groups
C. Presence of bridging carbonyl groups
D. Metals in the zero oxidation state
Choose the correct answer from the options given below:
A. Presence of a metal-metal bond
B. Presence of terminal carbonyl groups
C. Presence of bridging carbonyl groups
D. Metals in the zero oxidation state
Choose the correct answer from the options given below:
| 1. | Only A, B and C | 2. | Only B, C and D |
| 3. | Only A, C and D | 4. | Only A, B and D |
Subtopic: Organometallic Complexes & their Uses |
58%
Level 3: 35%-60%
NEET - 2024
Hints
The stabilization of a carbocation by an attached methyl group is primarily due to:
| 1. | -I inductive effect | 2. | Electromeric effect |
| 3. | Hyperconjugation | 4. | Mesomeric effect |
Subtopic: Electron Displacement Effects |
72%
Level 2: 60%+
NEET - 2024
Hints
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