Total number of sigma ($$\sigma$$) and pi($$\pi$$) bonds respectively present in hex-1-en-4-yne are :

Hex-1-en-4-yne has the structure: $$CH_2=CH-CH_2-C \equiv C-CH_3$$

Let us count the bonds:

Sigma bonds:

- C1=C2: 1 σ bond

- C2-C3: 1 σ bond

- C3-C4: 1 σ bond

- C4≡C5: 1 σ bond

- C5-C6: 1 σ bond

- C1-H bonds: 2 σ bonds

- C2-H bond: 1 σ bond

- C3-H bonds: 2 σ bonds

- C6-H bonds: 3 σ bonds

Total σ bonds = 5 + 8 = 13

Pi bonds:

- C1=C2: 1 π bond

- C4≡C5: 2 π bonds

Total π bonds = 3

The correct answer is Option 3: 13 and 3.