1. Which bond is formed due to the transfer of electrons from one atom to another?
Answer:
Explanation:
An ionic bond is formed when one atom donates an electron to another atom.
2. Which of the following molecules has a double covalent bond?
Answer:
Explanation:
O2 molecules are bonded by a double covalent bond.
3. Which molecule has a bent shape?
Answer:
Explanation:
H2O has a bent or V-shaped geometry due to two lone pairs of electrons on the oxygen atom.
4. Which of the following elements can expand its octet?
Answer:
Explanation:
Elements beyond the second period, like Sulphur, can expand their octets.
5. The bond angle in a tetrahedral molecule is:
Answer:
Explanation:
The bond angle in tetrahedral molecules like CH4 is 109.5 degrees.
6. Which bond is formed due to the mutual sharing of electrons?
Answer:
Explanation:
In a covalent bond, electrons are mutually shared between two atoms.
7. Which molecule has a linear shape?
Answer:
Explanation:
CO2 has a linear shape as there are no lone pairs on the central carbon atom.
8. Which type of bond is present in NaCl?
Answer:
Explanation:
NaCl consists of Na+ and Cl- ions held together by ionic bonds.
9. The bond formed due to the complete transfer of electrons is:
Answer:
Explanation:
In an ionic bond, electrons are completely transferred from one atom to another.
10. Which of the following molecules is non-polar?
Answer:
Explanation:
CO2 is a linear molecule with polar bonds that cancel out, making it non-polar.
11. In which molecule is sp3 hybridization observed?
Answer:
Explanation:
CH4 has a tetrahedral geometry and exhibits sp3 hybridization.
12. A bond formed by the sideways overlap of two p-orbitals is called:
Answer:
Explanation:
A pi bond is formed due to the sideways overlap of p-orbitals.
13. Which element forms a diatomic molecule held together by a triple bond?
Answer:
Explanation:
N2 is held together by a triple covalent bond.
14. The bond angle in ammonia (NH3) is:
Answer:
Explanation:
The bond angle in NH3 is slightly less than 109.5 degrees due to the presence of a lone pair, making it approximately 107 degrees.
15. Which type of bond is present in diamond?
Answer:
Explanation:
Diamond consists of carbon atoms held together by covalent bonds in a tetrahedral structure.
16. Which molecule has a trigonal planar shape?
Answer:
Explanation:
BF3 has a trigonal planar shape as there are no lone pairs on the central boron atom.
17. The bond which is present in HF is:
Answer:
Explanation:
HF exhibits intermolecular hydrogen bonding due to the high electronegativity difference between H and F.
18. Which type of bond gives a solid its characteristic metallic luster and high electrical conductivity?
Answer:
Explanation:
Metallic bonds result in free-moving electrons, giving metals their characteristic properties.
19. The bond formed when two atomic orbitals combine to give molecular orbitals is:
Answer:
Explanation:
A sigma bond is formed when atomic orbitals overlap head-on.
20. Which type of bond is directional in nature?
Answer:
Explanation:
Covalent bonds have a specific orientation in space, making them directional.