Which of the following is the most reactive towards nucleophilic addition reaction?
1.
2.
3.
4.
Product \(Z\) in the above-mentioned reaction is:
1. \(\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_3-\mathrm{O}-\mathrm{CH}_2 \mathrm{CH}_3\)
2. \(\left(\mathrm{CH}_3\right)_2 \mathrm{CH}-\mathrm{O}-\mathrm{CH}_2 \mathrm{CH}_3\)
3. \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_4-\mathrm{O}-\mathrm{CH}_3\)
4. \(\mathrm{CH}_3 \mathrm{CH}_2-\mathrm{CH}\left(\mathrm{CH}_3\right)-\mathrm{O}-\mathrm{CH}_2 \mathrm{CH}_3 \)
Which of the following organic compounds has same hybridization as its combustion product –(CO2)?
| 1. | Ethane | 2. | Ethyne |
| 3. | Ethene | 4. | Ethanol |
Which one of the following shows isogamy with non-flagellated gametes?
1. Sargassum
2. Ectocarpus
3. Ulothrix
4. Spirogyra
Five kingdom system of classification suggested by R.H. Whittaker is based on:
1. Complexity of body organisation
2. Mode of reproduction
3. Mode of nutrition
4. All of the above
Which one of the following fungi contains hallucinogens?
1. Morchella esculenta
2. Amanita muscaria
3. Neurospora sp.
4. Ustilago sp.
Archaebacteria differ from eubacteria in:
| 1. | Cell membrane structure | 2. | Mode of nutrition |
| 3. | Cell shape | 4. | Mode of reproduction |
Which one of the following is wrong about Chara?
1. upper oogonium and lower round antheridium
2. Globule and nucule present on the same plant
3. Upper antheridium and lower oogonium
4. Globule is male reproductive structure
Which of the following is responsible for peat formation?
1. Marchantia
2. Riccia
3. Funaria
4. Sphagnum
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