MCQs on Overlapping and Bonds

MCQs on Overlapping and Bonds

1. Which of the following at ordinary temperature and pressure exists as a linear polymer due to extensive hydrogen bonding?

1. H₂O
2. HCl
3. HF
4. NH₃

Answer: (c)

2. The shape of SF₃Cl₃ molecule is

1. triangle bi-pyramidal
2. cubic
3. octahedral
4. tetrahedral

Answer: (c)

3. The structure of CH₂=C=H₂ is

1. linear
2. planar
3. non-planar
4. has several reasoning structure

Answer: (a)

4. Which is the correct arrangement of the molecules based on dipole moments?

1. BF₃ > NF₃ > NH₃
2. NF₃ > BF₃ > NH₃
3. NH₃ > BH₃ > NF₃
4. NH₃ > NF₃ > BF₃

Answer: (d)

5. When two ice cubes are pressed over each other, they unite to form one cube. Which of the following forces is responsible to hold them together?

1. Ionic interaction
2. covalent attraction
3. van der waals forces
4. hydrogen bond formation

Answer: (d)

6. Which of the following is diamagnetic?

1. Superoxide ion
2. carbon molecule
3. unipositive ion of nitrogen molecule
4. oxygen molecule

Answer: (b)

7. A molecule of fluorine is formed by

1. the axial p-p orbital overlap
2. the sidewise p-p orbital overlap
3. the axial s-s orbital overlap
4. the axial s-p orbital overlap

Answer: (d)

8. Which one of the following molecules has the smallest bonds?

1. NH₃
2. PH₃
3. H₂O
4. H₂Se

Answer: (d)

9. Polarity in a molecule and hence the dipole moment depends primarily on electronegativity to the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment?

1. CO₂
2. HI
3. H₂O
4. SO₂

Answer: (c)

10. The electron configuration of the outermost shell of the most electronegative element is

1. 2s²2p²
2. 3s²3p⁵
3. 4s²4p⁵
4. 5s²5p⁵

Answer: (a)