Treatment of cyclopentanone with methyl lithium generates:
1. Cyclopentanonyl cation
2. Cyclopentanonyl radical
3. Cyclopentanonyl biradical
4. Cyclopentanonyl anion
Choose the compound which has a maximum bond angle at nitrogen among the following:
| 1. | 2. | ||
| 3. | 4. |
An ion, among the following, that has a magnetic moment of 2.84 BM is:
(At. no. Ni = 28, Ti = 22, Cr = 24, Co = 27)
1. Ni2+
2. Ti3+
3. Cr2+
4. Co2+
Cobalt(III) chloride forms several octahedral complexes with ammonia.
A compound among the following that does not give a test for chloride ions with silver nitrate at 25 °C is:
| 1. | CoCl3. 3NH3 | 2. | CoCl3. 4NH3 |
| 3. | CoCl3. 5NH3 | 4. | CoCl3. 6NH3 |
The correct statement, among the following, is:
| 1. | [Co(CN)6]3- has no unpaired electrons and will be in a low-spin configuration. |
| 2. | [Co(CN)6]3- has four unpaired electrons and will be in a low-spin configuration. |
| 3. | [Co(CN)6]3- has four unpaired electrons and will be In a high-spin configuration. |
| 4. | [Co(CN)6]3- has no unpaired electrons and will be in a high-spin configuration. |
| 1. | In K vs T |
| 2. | In \(\frac K T\) vs T |
| 3. | In K vs \(\frac 1 T\) |
| 4. | In \(\frac T K\) vs \(\frac 1 T\) |
1. \(\Delta H_\text{mix}\)
2. \(\Delta S_\text{mix}\)
3. \(\Delta V_\text{mix}\)
4. \(\Delta P\)
A mixture consists of hydrogen and oxygen gases in the mass ratio 1 : 4. Determine the mole ratio of hydrogen molecules to oxygen molecules present in the mixture.
| 1. | 1:4 | 2. | 4:1 |
| 3. | 16:1 | 4. | 2:1 |
A given metal crystallizes out with a cubic structure having an edge length of 361 pm. If there are four metal atoms in one unit cell, the radius of one atom is:
1. 40 pm
2. 127 pm
3. 80 pm
4. 108 pm
When the initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction will be:
1. 0.0
2. 1.0
3. 1.5
4. 2.0
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