If the rate constant of a reaction is \(0.03 s^{-1}\), how much time does it take for \(7.2\text { mol L}^{-1}\) concentration of the reactant to get reduced to \(0.9~\text {mol L} ^{-1}?\)
(Given: log 2=0.301)
1. 210 s
2. 21.0 s
3. 69.3 s
4. 23.1 s
(Given: log 2=0.301)
1. 210 s
2. 21.0 s
3. 69.3 s
4. 23.1 s
Subtopic: First Order Reaction Kinetics |
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If the half-life \((t_{1/2})\) for a first order reaction is \(1~\text{minute}\), then the time required for \(99.9 \%\) completion of the reaction is closest to :
1. \(5~\text{minutes}\)
2. \(10~\text{minutes}\)
3. \(2~\text{minutes}\)
4. \(4~\text{minutes}\)
1. \(5~\text{minutes}\)
2. \(10~\text{minutes}\)
3. \(2~\text{minutes}\)
4. \(4~\text{minutes}\)
Subtopic: First Order Reaction Kinetics |
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Level 2: 60%+
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\(C(s) + 2 H_2(g) \rightarrow CH_4(g); \Delta H = -74.8~kJ mol^{-1}\)
Which of the following diagrams gives an accurate representation of the above reaction?
[R→reactants; P→products]
Which of the following diagrams gives an accurate representation of the above reaction?
[R→reactants; P→products]
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Arrhenius Equation |
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Given below are two statements :
In the light of the above statements, choose the correct answer from the options given below:
| Statement I: | Ferromagnetism is considered as an extreme form of paramagnetism. |
| Statement II: | The number of unpaired electrons in a \(Cr^{2+}\)ion (Z = 24) is the same as that of a \(Nd^{3+}\) ion (Z = 60). |
| 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: d-Block Elements- Properties & Uses | f-Block Elements- Properties & Uses |
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Level 3: 35%-60%
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Which of the following are paramagnetic?
Choose the correct answer from the options given below:
| A. | \(\left[{NiCl}_4\right]^{2-}\) | B. | \(Ni(CO)_4\) |
| C. | \(\left[{Ni}({CN})_4\right]^{2-}\) | D. | \(\left[{Ni}\left({H}_2 {O}\right)_6\right]^{2+}\) |
| E. | \({Ni}\left({PPh}_3\right)_4\) | ||
| 1. | A and D only | 2. | A, D and E only |
| 3. | A and C only | 4. | B and E only |
Subtopic: VBT, CFT & their Limitations |
Level 3: 35%-60%
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The correct order of the wavelength of light absorbed by the following complexes is.
Choose the correct answer from the options given below:
| A. | \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+} \) | B. | \(\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-} \) |
| C. | \(\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_4\right]^{2+} \) | D. | \(\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\) |
| 1. | C < D < A < B | 2. | C < A < D < B |
| 3. | B < D < A < C | 4. | B < A < D < C |
Subtopic: VBT, CFT & their Limitations |
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Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A. | Haber process | I. | Fe catalyst |
| B. | Wacker oxidation | II. | \(PdCl_2\) |
| C. | Wilkinson catalyst | III. | \([PPh_3)_3 RhCl]\) |
| D. | Ziegler catalyst | IV. | \(TiCl_4~ \text {with}~ Al(CH_3)_3\) |
| 1. | A-I, B-II, C-III, D-IV | 2. | A-I, B-IV, C-III, P-II |
| 3. | A-I, B-II, C-IV, D-III | 4. | A-II, B-III, C-I, D-IV |
Subtopic: Organometallic Complexes & their Uses |
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Out of the following complex compounds, which of the compounds will have the minimum conductance in solution?
| a. | \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3 \) | b. | \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl} \) |
| c. | \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3 \mathrm{Cl}_3\right] \) | d. | \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]\) |
| 1. | a and b | 2. | a,b, and c |
| 3. | c and d | 4. | b, c, and d |
Subtopic: Introduction, Classification and Nomenclature |
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How many products (including stereoisomers) are expected from monochlorination of the following compound?
| 1. | 5 | 2. | 6 |
| 3. | 2 | 4. | 3 |
Subtopic: Isomerism & Chirality |
Level 3: 35%-60%
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below :
| Assertion (A): |  undergoes \(S_N2\) reaction faster than  |
| Reason (R): | Iodine is a better leaving group because of its larger size. |
In the light of the above statements, choose the correct answer from the options given below :
| 1. | (A) is True but (R) is False |
| 2. | (A) is False but (R) is True |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: Mechanism of Reactions |
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