Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
Level 3: 35%-60%
NEET - 2024
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Given below are two statements :
In light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are False.
2. Statement I is True but Statement II is False.
3. Statement I is false but Statement II is True.
4. Both Statement I and Statement II are True.
| Statement I: | \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\) is a homoleptic complex, whereas \([Co(NH_3)_4 Cl_2]^+\) is a heteroleptic complex. |
| Statement II: | Complex \([Co(NH_3)_6]^{3+}\) has only one kind of ligand but \([Co(NH_3)_4 Cl_2]^+\) has more than one kind of ligands. |
1. Both Statement I and Statement II are False.
2. Statement I is True but Statement II is False.
3. Statement I is false but Statement II is True.
4. Both Statement I and Statement II are True.
Subtopic: Introduction, Classification and Nomenclature |
85%
Level 1: 80%+
NEET - 2024
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The plot of osmotic pressure \((\pi)\) vs concentration \((mol L^{-1})\) for a solution gives a straight line with slope 25.73 L bar mol-1. The temperature at which osmotic pressure measurement is done is: \((\text {Use} \left.\mathrm{R}=0.083 \mathrm{~L} \mathrm{bar} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)\)
| 1. | 310°C | 2. | 25.73°C |
| 3. | 12.05 °C | 4. | 37°C |
Subtopic: Osmosis & Osmotic Pressure |
53%
Level 3: 35%-60%
NEET - 2024
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The products A and B obtained in the following reactions, respectively, are:
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
\( \begin{aligned} & 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} \\ & \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B} \end{aligned} \)
1. \(\mathrm{POCl}_3~ and~ \mathrm{H}_3 \mathrm{PO}_4 \)
2. \(\mathrm{H}_3 \mathrm{PO}_4~ and ~\mathrm{POCl}_3 \)
3. \(\mathrm{H}_3 \mathrm{PO}_3~and ~\mathrm{POCl}_3 \)
4. \(\mathrm{POCl}_3~and ~\mathrm{H}_3 \mathrm{PO}_3\)
Subtopic: Chemical Properties |
72%
Level 2: 60%+
NEET - 2024
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Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin
| 1. | promotes abscission of mature leaves only. |
| 2. | does not affect mature monocotyledonous plants. |
| 3. | can help in cell division in grasses, to produce growth. |
| 4. | promotes apical dominance |
Subtopic: Growth Hormones & Auxin | Auxin Function |
72%
Level 2: 60%+
NEET - 2024
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Lecithin, a small molecular weight organic compound found in living tissues, is an example of:
1. Phospholipids
2. Glycerides
3. Carbohydrates
4. Amino acids
1. Phospholipids
2. Glycerides
3. Carbohydrates
4. Amino acids
Subtopic: Lipids |
82%
Level 1: 80%+
NEET - 2024
Hints
Match List-I and List-II:
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A. | Two or more alternative forms of a gene | I. | Back Cross |
| B. | Cross of F1 progeny with homozygous recessive parent | II. | Ploidy |
| C. | Cross of F1 progeny with any of the parents | III. | Allele |
| D. | Number of chromosome sets in plant |
IV. | Test cross |
| 1. | A-II, B-I, C-III, D-IV | 2. | A-III, B-IV, C-I, D-II |
| 3. | A-IV, B-III, C-II, D-I | 4. | A-I, B-II, C-III, D-IV |
Subtopic: Monohybrid Cross: 1 |
89%
Level 1: 80%+
NEET - 2024
Hints
Identify the set of correct statements:
Choose the correct answer from the options given below:
1. A, B, C and D only
2. A, C, D and E only
3. B, C, D and E only
4. C, D and E only
| A: | The flowers of Vallisneria are colourful and produce nectar. |
| B: | The flowers of waterlily are not pollinated by water. |
| C: | In most of water-pollinated species, the pollen grains are protected from wetting. |
| D: | Pollen grains of some hydrophytes are long and ribbon like. |
| E: | In some hydrophytes, the pollen grains are carried passively inside water. |
1. A, B, C and D only
2. A, C, D and E only
3. B, C, D and E only
4. C, D and E only
Subtopic: Pollination & Outbreeding Devices |
75%
Level 2: 60%+
NEET - 2024
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Subtopic: Loss of Biodiversity |
88%
Level 1: 80%+
NEET - 2024
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What is the fate of a piece of DNA carrying only gene of interest which is transferred into an alien organism?
Choose the correct answer from the options given below:
| A: | The piece of DNA would be able to multiply itself independently in the progeny cells of the organism. |
| B: | It may get integrated into the genome of the recipient. |
| C: | It may multiply and be inherited along with the host DNA. |
| D: | The alien piece of DNA is not an integral part of chromosome. |
| E: | It shows ability to replicate. |
| 1. | D and E only | 2. | B and C only |
| 3. | A and E only | 4. | A and B only |
Subtopic: Principles of Biotechnology |
59%
Level 3: 35%-60%
NEET - 2024
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