Chemistry - Single MCQs (Page 27)

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Q261. On contact with oxygen, Rubidium forms ?...Q262. Metals difficult to oxidize are called ?...Q263. Which one is the cofactor of carbonic anhydrase?...Q264. Copper deficiency causes ?...Q265. pH value of water is ?...Q266. Which of the following is not a type of element ?...Q267. Which of the following is also known as Laughing gas ?...Q268. The number of electrons and neutrons of an element is 18 and 20 respectively. It...Q269. Who is regarded as father of modern chemistry?...Q270. Adding common salt to distilled water makes it?...