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Which type of bonding exists in Li 2 o and CaF 2 respectively : (1) Ionic, ionic (2) Ionic, covalent (3) Covalent, ionic
does coal flue gas react with sand or glass.. if so under what conditions??
what are the oxides and halides of d-block elements? mention them groupwise and comment on the stability of their oxidation state.
If wavelength of photon is 2.2x10 -11 m, h= 6.6x 10 -34 J-sec, then momentum of photon is: (1) 3x 10 -23 kgms -1 (2) 3.33x 10 22 kgms -1 (3) 1.452x 10-
electrolysis laws by michael faraday and how they helped him to find particle nature of electricity??
can you give examples of semi-synthetic polymer
When Solutions of ammonia and Iron (II) bromide are mixed, what is the net ionic equation?
Q. What is chlorophyll? A magnesium complex of porphyrin is called chlotophyll. the green colouring material in plants and which is essential for photosynthesis. Hemoglobin
first law of crystallography
Q. Explain: Vulcanization of rubber is necessary. Ans. Importance of vulcanization of rubber: 1. Vulcanization makes cross-links between the long unsaturat
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