| 1 |
Which of the following is a polar molecule |
- A. CCl4
- B. HCl
- C. BF3
- D. CO2
|
| 2 |
Which molecules is 100% covalent |
- A. H2
- B. H2O
- C. HF
- D. NH3
|
| 3 |
Which of the following molecules contain six bonding electrons. |
- A. CH4
- B. CO2
- C. BF3
- D. H2S
|
| 4 |
Which element has highest ionization potential. |
|
| 5 |
The tendency of an tom to attract shared pair of electron towards itself is called its. |
- A. Ionization energy
- B. Electronegativity
- C. Electron affinity
- D. dipole moment
|
| 6 |
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
|
| 7 |
Those elements whose electronegativities are 1.2 and 3.2, react to form |
- A. Ionic bond
- B. Covalent bond
- C. Gaseous substance
- D. Definiting a liquid substance
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| 8 |
Which of the hydrogen halides has the highest percentage of ionic character. |
- A. HF
- B. HBr
- C. HCl
- D. HI
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| 9 |
Fluorine molecule (F<sub>2</sub>) is formed by the overlap of |
- A. s - s orbital
- B. s - p orbital
- C. p - p head on overlapping of orbitals
- D. p - p parallel overlapping of orbitals
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| 10 |
Dipole moment of CO2 is. |
- A. 1.25 D
- B. 1.85 D
- C. 3.1 D
- D. Zero
|