Question
Which isotope was designated as the standard reference for
measuring atomic masses?Solution
Carbon-12 was adopted as the standard reference for atomic mass measurements by the International Union of Pure and Applied Chemistry (IUPAin 1961. The atomic mass unit (amu) is defined as exactly one-twelfth of the mass of a carbon-12 atom. This choice was practical because carbon-12 is both stable and abundant in nature. Carbon-11 is radioactive with a short half-life of about 20 minutes, Carbon-14 is radioactive with a half-life of approximately 5,730 years (used in radiocarbon dating), and Carbon-13 is a stable isotope comprising about 1.1% of natural carbon.
Which of the following is not a component of the Pradhan Mantri Annadata Aay Sanrakshan Abhiyan (PM-AASHA)?
The element required by Rhizobium for the formation of leghemoglobin which is involved in nitrogen fixation:
The Kisan Credit Card (KCC) scheme was introduced in 1998 on the recommendations ____
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The Mission Amrit Sarovar was launched on the occasion of
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Which initiative by the Indian government aims to connect APMC mandis for a unified national agricultural market, offering digital services to traders...
The repetitive growing of the same sole crop on the same land is refereed as:
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