9.46. While converting vegetable oil into vegetable ghee, H₂ is used as a

(a) oxidising agent           

(b) reducing agent             

(c) both             

(d) none

H₂S has minimum boiling point.

PbS + 4H₂O_2->PbSO₄ + 4H₂O.

Volume strength of H₂O₂ = Molarity * 11.2

HF molecules are associated with strong intermolecular hydrogen bonding hence its boiling point is the highest

Compound             Melting Point (K)

HF                          190

HCl