1. Which of the following is attracted by a magnet?   Glass   Leather   Iron   Sodium   Hint Half-n-half Clue   2. The presence of charge on a substance can be confirmed by a   Thermometer   Gold Leaf Electroscope   Ammeter   Electrodes   Half-n-half Clue   3. Conductors have a _______ resistance.   Unknown   Low   Intermediate   High   Half-n-half Clue   4. Bending of light rays when they enter a different medium is known as   Reflection   Refraction   Convection   Radiation   Half-n-half Clue   5. Which of the following is not a good heat insulator?   Iron   Feathers   Wool   Wood   Half-n-half Clue   6. When a spring is released, its potential energy is converted to   Kinetic Energy   Magnetic Energy   Light Energy   Electrical Energy   Half-n-half Clue   7. By which of the following methods does heat transfer not take place?   Refraction   Convection   Radiation   Conduction   Half-n-half Clue