4 Which process involves synthesis of complex molecules? A Catabolism B Anabolism C Digestion D Respiration
6 Alcohols are classified as hydroxy compounds because they contain: A Carbonyl group B Hydroxyl group C Carboxyl group D Amino group
9 Which nutrient is mainly responsible for body growth and repair? A Carbohydrates B Lipids C Proteins D Minerals
10 Which hydrocarbon contains only single covalent bonds? A Alkene B Alkyne C Alkane D Aromatic hydrocarbon
12 What is the IUPAC name of CH3COOH? A Ethanoic acid B Methanoic acid C Propanoic acid D Butanoic acid
13 Water pollution is caused by: A Industrial waste B Agricultural runoff C Domestic sewage D All of these
16 Which model explains enzyme action? A Collision model B Lock and key model C Atomic model D Kinetic model
19 Carboxylic acids react with carbonates to produce: A Salt only B Salt, water and CO2 C Salt and hydrogen D Ester and CO2
20 Which benefit of ethanol makes it important in medicine? A High sweetness B Antiseptic nature C High toxicity D Strong acidity