2.5 D, E, G

Explain the difference in reactivity between alkanes and alkenes in terms of the C=C bond as a region of high electron density.

• Alkanes are more reactive due to the C=C bond.

• Alkenes are more reactive due to the C=C bond.

• Both alkanes and alkenes have similar reactivity.

• Reactivity is not influenced by the C=C bond.

What type of bonds are present in alkanes?

• Single bonds (sigma bonds)

• Double bonds (one sigma bond and one pi bond)

• Triple bonds

Fill in the blank: Alkanes have ______ bonds between carbon atoms.

• single (sigma)

• double (pi)

• triple (pi)

• quadruple

What type of overlapping occurs in a sigma bond?

• A) Parallel overlapping

• B) Axial overlapping

• C) Diagonal overlapping

What type of bond is formed when two s-orbitals combine?

• Sigma Bond

• Pi Bond

Which bond has minimum overlapping and decreased bond strength?

• Sigma Bond

• Pi Bond

Fill in the blank: According to VBT, the extent of overlapping decides bond _______ and bond length.

• strength.

• angle.

• energy.

• order.

For the compound Water, find the number of sigma (σ) and pi (π) bonds.

• 2σ, 0π.

• 1σ, 1π.

• 2σ, 1π.

• 1σ, 0π.

What makes alkenes susceptible to electrophilic attack?

• The presence of a double bond

• Their saturated nature

• The presence of a triple bond

• Their lack of reactivity

What conditions are required for hydrogenation?

• High temperature and pressure with a catalyst

• Low temperature and pressure without a catalyst

• Room temperature with a catalyst

• High temperature without a catalyst