| 1 |
In a group of periodic table, ionization energy. |
- A. Decreases
- B. Increases
- C. Remains same
- D. First increases than increases
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| 2 |
______ Molecule has zero dipole moment. |
- A. CO
- B. H2S
- C. SO2
- D. CH4
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| 3 |
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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| 4 |
Which molecule has sG2 hybridization. |
- A. CH4
- B. C2H4
- C. C2H2
- D. C2H5
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| 5 |
Which one of the following has no tendency of form coordinate covalent bond with H+ |
- A. NH3
- B. H2O
- C. CH4
- D. CH3OH
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| 6 |
Which of the following statements is not correct regarding bonding molecular orbitals |
- A. Bonding molecular orbitals possess less energy than atomic orbitals from which they are formed
- B. Bonding molecular orbitals have low electron density between the two nuclei
- C. Every electron in the bonding molecular orbitals contributes to the attraction between atoms
- D. Bonding molecular orbitals are formed when the electron waves undergo constructive interference
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| 7 |
Dipole moment is defined as. |
- A. Charge x distance
- B. Charge x Debye
- C. Charge x displacement
- D. Charge x bond energy
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| 8 |
Which of the hydrogen halides has the highest percentage of ionic character |
- A. HF
- B. HBr
- C. HCI
- D. HI
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| 9 |
Which molecules is 100% covalent |
- A. H2
- B. H2O
- C. HF
- D. NH3
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| 10 |
The structure of water molecule is. |
- A. angular
- B. Linear
- C. Trigonal
- D. Trigonal pyramidal
|