| 1 |
Which of the following molecule obey octet rule. |
- A. BF3
- B. BCl3
- C. NH2
- D. SF6
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| 2 |
Which of the following has linear structure. |
- A. CO2
- B. NH3
- C. CH4
- D. H2O
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| 3 |
Which of the following species has unpaired electrons in antibonding molecular orbitals. |
- A. O2<sup>+2</sup>
- B. N2<sup>-2</sup>
- C. B2
- D. F2
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| 4 |
Which compound does not obey the octet rule. |
- A. NH3
- B. BCl3
- C. H2O
- D. CH4
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| 5 |
Which element has highest ionization potential |
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| 6 |
Which pair are iso electronic. |
- A. Na+ and Cl-
- B. Na+ and Mg+2
- C. N-3 and P-3
- D. H+ and H-
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| 7 |
The number of bonds in oxygen molecules. |
- A. One sigma and One pi
- B. One sigma and two Pi
- C. Three sigma only
- D. Two sig and two pi
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| 8 |
Forces of attraction between He atoms are. |
- A. Hydrogen bonding
- B. London forces
- C. Debye forces
- D. Ion dipole forces
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| 9 |
In BeCl2, the covalent bond is formed due to overlap of |
- A. sp -s
- B. sp -p
- C. sp2 -p
- D. sp3 -p
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| 10 |
Which has zero potential energy. |
- A. When H atom is independent
- B. When two H atoms combine to form H2 molecule
- C. When two H atoms super impose to each other
- D. When two H atoms have weak attraction between them
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