THE EFFECTS OF OXIDATION REACTIONS IN EVERYDAY LIFE CHEMICAL REACTIONS AND EQUATIONS 01 Class 10th Chemistry (Practice Sheet) 1 What is corrosion? A. Rapid degradation of metal B. Slow degradation of metal surfaces by chemical or electrochemical reactions C. Formation of a protective layer on metal D. Enhancement of metal strength 2 How can corrosion of metals be prevented? A. Increasing exposure to air B. Coating with paint or varnish C. Submerging in water D. Allowing contact with moisture 3 What is the process of covering iron with a layer of more reactive metal called? A. Electroplating B. Galvanisation C. Anodising D. Alloying 4 What is rancidity? A. Rapid spoilage of food B. Development of a metallic taste in food C. Oxidation of fats and oils in food leading to unpleasant smells and tastes D. Preservation of food 5 What are common antioxidants used to prevent rancidity? A. Sodium chloride B. Butylated hydroxy anisole (BHA) and Butylated hydroxytoluene (BHT) C. Vitamin C D. Calcium carbonate 6 How rusting of iron can be prevented? 7 What is rust? Give the equation for the formation of rust? 8 Describe the preventive measures for rancidity in food. 9 How does galvanisation protect iron from corrosion? 10 Explain the role of nitrogen packing in preventing rancidity. Page 1 Email: Phone No: Website:
[email protected] +91 93299 65211 www.brisklearning.com Address: Office No. 605, CTS No. 658, Gayatri Bhuvan, A & B, Kandivali, Dattani Park, Thakur Village, Kandivali East, Mumbai, Maharashtra 400101
English