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which solution is formed when iodine solution ,copper sulphate and caustic soda are mixed?
1.why hardness Bore water less than sea water?
How many moles of gas occupy 98 L at a pressure of 2.8 atmospheres and a temperature of 292 K?
Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
A mol 4:1 mixture of He and CH4 is contained in vessel at 20 bar pressure.Due to a hole in the vessel the gas mixture leaks out.the composition of the mixture,effusing out initiall
The emission spectrum of hydrogen is found to satisfy the expression for the energy change. teiangle E (in joules) such thatTriangle E= 2.18x10(1/n 2 1 - 1/ n 2 1 ) J where n
How many unpaired electrons are present in Ni 2+ cation (atomic number = 28): (1) 0 (2) 2 (3) 4 (4) 6 Ans: 2
defference between diffusion and osmosis
2 Kg of ice at -20 degree C is diverse with 5Kg of water 20 degree C in an insulating vessel having negligible heat capacity. Measure the final mass of water remaining in the con
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