1. An atom that is deficient in electrons is called a positive _______.   ion   radical   valency   Hint Half-n-half Clue   2. The charge on an electron is _______.   negative   neutral   positive   Half-n-half Clue   3. When a glass rod is rubbed with silk, the electrons are transferred ...   from the silk to the glass rod   from the glass rod to the silk and vice versa   from the glass rod to the silk   Half-n-half Clue   4. Lightning takes place _______ thunder.   before   after   when   Half-n-half Clue   5. Name the device that helps to find out whether a given body is electrically charged or not.   Tin Foil Electroscope   Insulated Stand   Gold Leaf Electroscope   Half-n-half Clue   6. Name the law: 'The sum of the total electrons in a system is a constant quantity'   Law of Conservation of Momentum   Law of Conservation of Electric Charges   Law of Conservation of Matter   Half-n-half Clue   7. Consider four charged bodies A, B, C and D. Body A attracts B but repels C. Body C attracts D, which is positively charged. Which body is positively charged?   Body A   Body B   Body C   Half-n-half Clue