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The series limit for Balmer series of H-spectra is: (1) 3800 (2) 4200 (3) 3646 (4) 4000 Ans: 3646
When Nacl is dissolved in water the sodium ion becomes: (1) Oxidized (2) Reduced (3) Hydrolysed (4) Hydr
metals iron, aluminium, copper, gold, etc. have great industrial significants. which are their important ores? important alloys of iron, aluminium and copper and their uses.
polymers based upon availabilty
A gas is a fluid. It has no resistance to change of shape and will expand indefinitely to fill any container in which is held. The molecules or atoms which make up a gas interact o
Q. Test for the presence of linseed oil? Hexabromide test is done to know the extent of presence of linolenic acid. In presence of fish oils, which are rich in linolenic acid,
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula o
name an artificial fertilizer or fertilisisers which farmer can use to increase the supply of nitrate,phosphate and potassium to their crops.what are the function of ions?
what is equivalent weight of formaldehyde(HCHO)
What is it?
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