Question : In Aqua Regia which two acids are mixed in 1:3?

Option 1: HNO₃ and HCl

Option 2: HNO₃ and H₂SO₄

Option 3: HNO₃ and H₂CO₃

Option 4: HCl and H₂CO₃

Question : Identify a hydrocarbon pair that is not part of the homologous series.

Option 1: CH₄ and C₂H₆

Option 2: C₂H₆ and C₃H₉

Option 3: C₂H₆ and C₃H₈

Option 4: C₄H₈ and C₅H₁₀

Question : What is the product formed when CH₃CH₂OH reacts with O₂?

Option 1: H₂O+ heat

Option 2: CO₂ + H₂O + heat and light

Option 3: CO₂ + H₂O

Option 4: CO₂ + heat and light

Question : The chemical formula of washing soda is

Option 1: Na₂So₄ .10H₂O

Option 2: NaHCO₃

Option 3: Na₂CO₃.10H₂O

Option 4: Ca(OH)₂