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 : Which of the following is known as ‘Plaster of Paris’?

Option 1: 2CaSO₄. 2H₂O

Option 2: 2MgSO₄.H₂O

Option 3: 2MgSO₄.7H₂O

Option 4: 2CaSO₄.H₂O

Question : Which of the following is an organic compound with the formula CH₃OC₆H₅ used as a perfume, fragrance and solvent?

Option 1: Anisole

Option 2: Toluene

Option 3: Acetophenone

Option 4: Aniline

Question : The chemical formula of washing soda is ______.

Option 1: Na₂CO₃.10H₂O

Option 2: Na₂SO₄

Option 3: NaOH

Option 4: NaHCO₃

Question : The chemical formula of borax is

Option 1: Na₂B₅ O₇ .10H₂O

Option 2: Na₂B₄O_7.10H₂O

Option 3: Na₂B₄O₇.5H₂O

Option 4: Na₂B₄O₇.12H₂O