The IUPAC name of the given compound is:
1. 3-keto-2-methylhex-4-enal
2. 5-formylhex-2-en-3-one
3. 5-methyl-4-2-en-5-el
4. 3-keto-2-methylhex-5-enal
1. 3-keto-2-methylhex-4-enal
2. 5-formylhex-2-en-3-one
3. 5-methyl-4-2-en-5-el
4. 3-keto-2-methylhex-5-enal
Incorrect statement among the following is:
| 1. | The uncertainty principle is\(\Delta x \cdot \Delta p \geq \dfrac{h}{4 \pi} \) |
| 2. | Half-filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry, and a more balanced arrangement. |
| 3. | The energy of the 2s orbital is less than the energy of the 2p orbital in the case of hydrogen-like atoms. |
| 4. | De-Broglie's wavelength is given by\(\lambda=\dfrac{h}{m v} \), where m= mass of the particle, v = group velocity of the particle. |
The incorrect statement among the following is -
| 1. | Density decreases in case of crystals with Schottky's defect. |
| 2. | NaCl(s) is insulator, silicon is semiconductor, silver is conductor, quartz is piezo electric crystal. |
| 3. | Frenkel defect is favoured in those ionic compounds in which sizes of cations and anions have large difference. |
| 4. | \(Fe_{0.98}O\) has non stoichiometric metal excess defect. |
| 1. | \(\mathrm{{SF}_6}\) | 2. | \(\mathrm{NCl_3}\) |
| 3. | \(\mathrm{BCl_3}\) | 4. | \(\mathrm{PH_3}\) |
For a given reaction, ∆H = 35.5 kJ mol–1 and ∆S = 83.6 J K–1 mol–1. The reaction is spontaneous at:
[Note: Assume that ∆H and ∆S do not vary with temperature]
1. T > 425K
2. All temperatures
3. T > 298K
4. T < 425K
In humans, the main oxygen carrier in the blood is:
1. Hemocyanin
2. Proteins
3. Haemoglobin
4. Both microorganisms and haemoglobin.
If the molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be-
1. Halved
2. Tripled
3. Unchanged
4. Doubled
Which of the following is dependent on temperature?
| 1. | Molarity | 2. | Mole fraction |
| 3. | Weight percentage | 4. | Molality |
The incorrect statement among the following is:
| 1. | The value of the equilibrium constant is changed in the presence of a catalyst. |
| 2. | Enzymes catalyze mainly bio-chemical reactions. |
| 3. | Coenzymes increase the catalytic activity of the enzyme. |
| 4. | The catalyst does not initiate any reaction. |
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