Question
Which of the following international scientific
organisations approves the names of elements, symbols and unit?Solution
The International Union of Pure and Applied Chemistry (IUPAC): Â It is the world authority on chemical nomenclature and terminology, including the naming of new elements in the periodic table; on standardized methods for measurement; and on atomic weights, and many other critically evaluated data. Dr Lynn M. Soby is the Executive Director of IUPAC.
Which of the following elements is NOT a zero-group element?
Which vitamin is water-soluble?
Which gas is the chief component of Bio-gas?
Aqua regia, which can dissolve gold, is a freshly prepared mixture of concentrated hydrochloric acid and concentrated ______.
Which element dominates the Earth's crust by percentage?
Which gas turns into a liquid at the lowest temperature?
Which of the following reactions is commonly used in the hydrogenation of vegetable oils using a nickel catalyst?
Malathion is primarily used as a/an:
Which enzyme is derived from soybeans?
Which substance is also known as 'Oil of Vitriol'?
