Question : What is the name of the chemical compound having the molecular formula C₃H₄O, which is used for the production of acrylic acid and acrylate ester?

Option 1: Naphthaldehyde

Option 2: Vanillin

Option 3: Acrolein

Option 4: Muscone

Question : The chemical formula of washing soda is

Option 1: Na₂So₄ .10H₂O

Option 2: NaHCO₃

Option 3: Na₂CO₃.10H₂O

Option 4: Ca(OH)₂

Question : The chemical formula of acetic acid is

Option 1: CH₃COH

Option 2: CH₃COOH

Option 3: CH₃COCH₃

Option 4: CH₂COOH

Question : In its reactions with silver nitrate, C₂H₂ shows

Option 1: Oxidising property 

Option 2: Reducing property 

Option 3: Basic Property 

Option 4: Acidic Property

Question : Two circles C₁ and C₂ touch each other internally at P. Two lines PCA and PDB meet the circles C₁ in C, D, and C₂ in A, B respectively. If $\angle$BDC=120°, then the value of $\angle$ABP is equal to

Option 1: 60°

Option 2: 80°

Option 3: 100°

Option 4: 120°