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Q. Hypothesis on chlorofluorocarbon?
A hypothesis is a probable explanation for what has been observed. Based on the explanation of ozone thinning and CFC build-up in the chemists Mario Molina, the atmosphere and F. Sherwood Rowland hypothesized that CFCs break in the atmosphere due to the Sun's ultraviolet rays. They additional hypothesized that a chlorine particle produced by the breakdown of CFCs could break down ozone.
fe is a non stoichiometric compound
This is an acid-catalyzed addition to the double bond much like hydration, except that an alcohol rather than water is the nucleophile that reacts with the carbocation intermediate
explain industrial manufacturing process of westron and explain the advantages and disadvantages of westron
Q. Isolation and purification of metals? metals as a group of elements have acquired a unique importance in the modern world. However, nature' does not generally offer us metal
Which one of the following compound is ionic: (1) KCl (2) CH 4 (3) Diamond (4) H 2 Ans: KCl
Analytical test of Oxalic acid or Polyprotic acid (a) The aqueous solution turns blue litmus red. (b) The aqueous solution includes effervescences along with NaHCO 3 . (c
Test of proteins - Nitroprusside test Nitroprusside test : Proteins consisting of -SH group give this test. While sodium nitroprusside solution is added to proteins comprising
The four quantum numbers of the outermost orbital of K (atomic no. =19) are: (1) n= 2, l= 0, m=0, s= +1/2 (2) n= 4, l= 0, m=0, s= +1/2 (3) n= 3, l= 1,
The total number of unpaired electrons in d- orbital's of atoms of element of atomic number 29 is: (1) 10 (2) 1 (3) 0 (4)5 Ans: 0
preparation of idoform in laboratery
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