posted by R S Telagathoty .
can u pl answer the following 1. _______ used in air craft to measure altitudes . 2.The metal that burns in oxygen with a dazzling light is _________ . 3. the gas liberated on heating copper corbonate is _________ . 4 .what is king of chemicals ? 5. what is the symbol for acidic oxide 6.is water a chemical or element