Question Detail Why is phosphorus kept under water ? to make it wetto make it durablewater forms a protective coating on itto save it from catching fire when exposed to dry air Answer: Option D Ad Similar Questions : 1. The major component used in preparation of different types of glasses is : Sodium borateSodium silicateSilicaCalcium silicate Answer: Option C 2. Which of the following is produced during the formation of photochemical smog ? Nitrogen OxidesHydrocarbonsMethaneOzone Answer: Option D 3. Which one of the following metals does not react with water to produce Hydrogen? CadmiumLithiumPotassiumSodium Answer: Option A 4. What is the chemical name of table salt ? Sodium nitrateAmmonium chlorideSodium chlorideCalcium chloride Answer: Option C 5. The most abundant element in the earth's crust is ? AluminiumNitrogenSiliconOxygen Answer: Option D Read more from - Chemistry Questions Answers