give the element name:
a)a soft metal stored under kerosene
b)an element with variable valency stored under water
c)an element which is tetra valent n forms the basis of organic chemistry
d)an element which is an inert gas with atomic no. 2
e)a metal which burns with brilliant light when lignited
1) sodium or Pootasiun2) phosphorus 3) Carbon4) Helium5) Methane
5th answer is magnesium
The right answers are :-
1) Sodium or Potassium
It is right .my ma told.
Write the full form of DNA and briefly explain DNA copying and its significance.
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