Question Detail Human bone does not contain calciumcarbonoxygenphosphorous Answer: Option CExplanation:Human bone contains calcium, carbon, phosphorous. Ad Similar Questions : 1. Atomic number of an element gives the number of nucleons in its atomthe number of electrons in its atomthe weight of the atom of the elementthe total number of elementary particles in its atom Answer: Option B 2. Acids taste SourSweetMay be bothNone of both Answer: Option A 3. The chemical used as a fixer in photography is ? sodium thiosulphatesodium sulphateboraxammonium sulphate Answer: Option A 4. What is a mixture of potassium nitrate powdered charcoal and sulphur called? paintaluminiumbrassgun powder Answer: Option DExplanation:gun powder is the mixture of potassium nitrate powdered charcoal and sulphur. 5. Rare gases are mono atomicdi atomictri atomicNone of above Answer: Option AExplanation:Rare gases are mono atomic. Read more from - Chemistry Questions Answers