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The frequency of yellow light having wavelength 600 nm is: (1) 5.0x10 14 Hz (2) 2.5 x 10 7 Hz (3) 5.0x 10 7 Hz
Q. Extraction of f-block element ? As all the lanthanides occur together in nature, their extraction involves two main steps: (i) separation from one another and (ii) reducti
why firstly test for ammonium radicals before analysis of cation radicals
The number of d electrons in Fe +2 (atomic number of Fe= 26 ) is not equal to that of the: (1) p-electrons in Ne (At. No.= 10) (2) s-electrons in (At. No.= 12)
The elements of this group form a number of compounds with halogens. The halogen compounds of S. Se, Te and Po are called as halides. For oxygen, only the fluoro compounds
Explain about the interstitial defects An interstitial is an atom that occupies a place outside the normal lattice position. It might be the similar type of atom as the others
The magnetic quantum number of valence electron of sodium (Na) is: (1) 3 (2) 2 (3) 1 (4) 0 Ans: 0
why HOH is not harmful to our body but Phenol is?
write the different units of hardness with their relationship
Q. Name the plant based sources of antioxidants? Name the plant based sources of the following antioxidants: Vitamin C, lycopene, isoflavones and organo sulphur compounds.
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