| 1 |
The number of bonds in nitrogen molecules is. |
- A. One pi and one sigma
- B. One pi and two sigma
- C. Thre sigma only
- D. Two pi and one sigma
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| 2 |
Which element has highest ionization potential. |
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| 3 |
Which one of the following molecules is paramagnetic. |
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| 4 |
Which of the following molecules contain six bonding electrons. |
- A. CH4
- B. CO2
- C. BF3
- D. H2S
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| 5 |
The H - H Bond energy in KJ mole -1 is. |
- A. 346
- B. 436
- C. 463
- D. 336
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| 6 |
If we want to change O<sub>2</sub>to O<sub>2</sub><sup>-1</sup>The electron is to be placed in |
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| 7 |
Which of the following molecule obey octet rule. |
- A. BF3
- B. BCl3
- C. NH2
- D. SF6
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| 8 |
Which one of the following correctly describe the shape of NH3 molecules. |
- A. tetrahedral
- B. Pyramidal
- C. Angular
- D. Square planar
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| 9 |
Which statement is true about Na and Na+ |
- A. size of Na is greater than Na+
- B. Size of Na is smaller than Na+
- C. Both have equal size
- D. Both have same properties
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| 10 |
Along period of periodic table shielding effects. |
- A. Increases
- B. Decreases
- C. Remain constant
- D. First increases than decreases
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