Chemistry - Single MCQs (Page 40)

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Q391. Sodium carbonate crystal lose water molecules this property is called?...Q392. Which one of the following elements is essential for construction is nuclear rea...Q393. A radioactive substance has a half life of four months, three-fourth of the subs...Q394. Misch metal' is widely used in manufacture of which of the following?...Q395. The M.K.S. system was first introduced by?...Q396. Yellow cake' an item of smuggling across border is?...Q397. Among the given nutrients, milk is a poor source of?...Q398. What is the structure of IF7?...Q399. Hydrogen bomb is based on the principle of?...Q400. A mixture of sand and naphthalene can be separated by?...