Subtopic: Colloidal Solution |
61%
From NCERT
NEET - 2023
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For the given redox reaction,
\(\mathrm{{a} {Cr}_2 {O}_7^{2-}+{bSO}_3^{2-}({aq})+{c} {H}^{+}({aq})} →\)
\(\mathrm{2 {a} {Cr}^{3+}({aq})+{bSO}_4^{2-}({aq})+\frac{{c}}{2} {H}_2 {O}(\ell)} \)
the coefficients a, b and c of a balanced equation are found to be, respectively:
1. 8, 1, 3
2. 1, 3, 8
3. 3, 8, 1
4. 1, 8, 3
\(\mathrm{{a} {Cr}_2 {O}_7^{2-}+{bSO}_3^{2-}({aq})+{c} {H}^{+}({aq})} →\)
\(\mathrm{2 {a} {Cr}^{3+}({aq})+{bSO}_4^{2-}({aq})+\frac{{c}}{2} {H}_2 {O}(\ell)} \)
the coefficients a, b and c of a balanced equation are found to be, respectively:
1. 8, 1, 3
2. 1, 3, 8
3. 3, 8, 1
4. 1, 8, 3
Subtopic: Balancing of Equations |
77%
From NCERT
NEET - 2023
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What fraction of one edge centred octahedral void lies in one unit cell of fcc?
| 1. | \( 1 \over 12\) | 2. | \( 1 \over 2\) |
| 3. | \( 1 \over 3\) | 4. | \( 1 \over 4\) |
Subtopic: Voids, Radius Ratio & Coordination Number |
From NCERT
NEET - 2023
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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:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | The nutrient deficient water bodies lead to eutrophication. |
| Statement II: | Eutrophication leads to decrease in the level of oxygen in the water bodies. |
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Water Pollution - Eutrophication |
From NCERT
NEET - 2023
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Which amongst the following will be most readily dehydrated under acidic conditions?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Mechanism of Dehydration, Methanol & Ethanol |
53%
From NCERT
NEET - 2023
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Match the Oxoacids of Sulphur given in List I with the number of bonds given in List II and mark the correct option.
Choose the correct answer from the options given below:
| List-I (Oxoacids of Sulphur) |
List-II (Bonds) |
||
| A. | Peroxodisulphuric acid | I. | Two S-OH, Four S=O, One S-O-S |
| B. | Sulphuric acid | II. | Two S-OH, One S=O |
| C. | Pyrosulphuric acid | III. | Two S-OH, Four S=O, One S-O-O-S |
| D. | Sulphurous acid | IV. | Two S-OH, Two S=O |
| Options: | A | B | C | D |
| 1. | III | IV | II | I |
| 2. | I | III | II | IV |
| 3. | III | IV | I | II |
| 4. | I | III | IV | II |
Subtopic: Group 16 - Preparation, Properties & Uses |
73%
From NCERT
NEET - 2023
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Identify the final product [D] obtained in the following sequence of reactions:
| 1. | \(\mathrm{HC\equiv C^-~Na^+}\) | 2. |  |
| 3. |  |
4. | \(\mathrm{C_4H_{10}}\) |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
76%
From NCERT
NEET - 2023
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The most stable compound, among the following, is:
1. [Co(NH3)6]2(SO4)3
2. [Co(NH3)4(H2O)Br](NO3)2
3. [Co(NH3)3(NO3)3]
4. [CoCl2(en)2]NO3
1. [Co(NH3)6]2(SO4)3
2. [Co(NH3)4(H2O)Br](NO3)2
3. [Co(NH3)3(NO3)3]
4. [CoCl2(en)2]NO3
Subtopic: Organometallic Complexes & their Uses |
68%
From NCERT
NEET - 2023
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Subtopic: Ethers: Preparation & Properties, Uses |
74%
From NCERT
NEET - 2023
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Which of the following statements is incorrect?
Choose the correct answer from the options given below:
| A. | All the transition metals except scandium form MO oxides which are ionic. |
| B. | The highest oxidation number corresponds to the group number in transition metal oxides is attained in Sc2O3 to Mn2O7. |
| C. | Basic character increases from V2O3 to V2O4 to V2O5. |
| D. | V2O4 dissolves in acids to give VO43-. |
| E. | CrO is basic, but Cr2O3 is amphoteric. |
| 1. | B and C only | 2. | A and E only |
| 3. | B and D only | 4. | C and D only |
Subtopic: d-Block Elements- Properties & Uses |
53%
From NCERT
NEET - 2023
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