Chemistry - Single MCQs (Page 21)

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Q201. List which contains only elements is ?...Q202. Over 70% of earth's crust is covered with ?...Q203. Mass of an atom relative to C-12 is ?...Q204. Relative atomic mass of Na is ?...Q205. A mole of any substance contains ?...Q206. Mass number of an atom is ?...Q207. Biochemistry deals with ?...Q208. Ca on loosing 2 electrons becomes ?...Q209. If 9.05 moles of ozone is formed in a storm then mass of ozone is ?...Q210. Natural force that holds together elements together is called ?...