Valence Bond(General Knowledge > General Science ) Questions and answers for exam Preparation

Question 1. A π (pi) bond is the result of the

overlap of an s orbital and a p orbital
overlap of two p orbitals along their axes
sidewise overlap of two parallel p orbitals
sidewise overlap of two s orbitals

Explanation:-

Answer: Option C. -> sidewise overlap of two parallel p orbitals

Question 2. Greater the overlap of the orbitals, _________________________

lesser the bond strength
greater the bond strength
bond strength remains the same
no bond formation

Explanation:-

Answer: Option B. -> greater the bond strength

Question 3. Which is the stronger bond?

\sigma\ Bondσ Bond
π Bond\pi\ Bondπ Bond

Explanation:-

Answer: Option A. -> \sigma\ Bondσ Bond

Question 4. The new attractive force(s) (ie

NB - EA
NA - NB
EA - EB
Both A & B

Explanation:-

Answer: Option D. -> Both A & B

Question 5. Choose all possible overlaps

positive overlap
zero overlap
negative overlap
All of above

Explanation:-

Answer: Option D. -> All of above

Question 6. Atoms that are sp2 hybridized form ____ pi bond(s)

0
1
2
3

Explanation:-

Answer: Option B. -> 1

Question 7. The new repulsive force(s) (ie

NA - NB
NB - EB
NA - EB
Both A & B

Explanation:-

Answer: Option D. -> Both A & B

Question 8. In a polar covalent bond, electrons are shared ___________

equally
unequally
between non-metals with similar electronegativities
between a metal and a non-metal

Explanation:-

Answer: Option B. -> unequally

Question 9. The electronegativity difference in the bonds of CH4 (methane) is:

0.4
5.9
-0.4
1.7

Explanation:-

Answer: Option A. -> 0.4

Question 10. Electronegativity is a measurement of the ability of a nucleus to

attract bonding electrons
attract other nuclei
attract elenece in the non-valence energy levels
All of above

Explanation:-

Answer: Option A. -> attract bonding electrons