- 
		
		wat is mother liquor??? i saw in preparation of Mohr Salt but dint understand what it is?? ... 
- 
		
		among the following substituted silanes the one which will give rise to cross linked silicon polymer on hydrolysis a)R4Si b)RSiCl3 c)R2Sicl2 d)R3sicl ... 
- 
		
		Ionisation energy-It is the energy required to remove an electron from an isolated gaseous atom. Here,what is the meaning of "isolated gaseous atom"?????? ... 
- 
		
		Is experimental chemistry there in iitjee......if yes, from where can we prepare for it. Are the Practical books for CBSE like Comprehensive, etc enough ? ... 
- 
		
		why decrease in ionic character ,decrease in basic character in case of transition elements ... 
- 
		
		1)Copper oxide from Copper sulphate 2)Ferrous sulphate from Mohr's Salt 3)Anhydrous ZnCl2 from white vitrol ... 
- 
		
		Who is giving BT part test on 25th?? ... 
- 
		
		"when an atom with a filled valence shell and 1 or more lone pairs is bonded to an atom with an incomplete valence shell or a valence shell that can become incomplete by electron shifts , there is a tendency for the lone pair ... 
- 
		
		Can anyone please explain the following processes for manufacture of steel in simple lines. [1] (1) Bessemer Process (2) Open Hearth Process (3) L.D. Process ... 
- 
		
		Statement 1-Ag maybe prepared from Ag coins by treating them with HNO3 adn then with HCl to get AgCl but not directly treated with HCl Statement 2-HCl is not a good oxidising agent. ... 
- 
		
		*Image* ... 
- 
		
		A sample containing H3PO4 and P4O10 is labelled in the analogous manner as oleum. The mass of P4O10 in a sample labelled as 127%, would be ? ... 
- 
		
		Why is Chalcocite roasted and not calcined in the recovery of copper ? ... 
- 
		
		1.. *Image* ... 
- 
		
		*Image* Explain All e conceps , ... 
- 
		
		the heat of atomiza5ion is the change in enthalpy accompanying the conversion of 1 mole of an element or a compound in its most stable state at 298 K and 1 atmosphere into free atoms. Use Slater's rule to rationalize the foll ... 
- 
		
		What things do we need to keep in mind while selecting the coating metal for galvanisation? ... 
- 
		
		The odour of skunks is caused by chemical compounds called thiols. these compounds of which butanethiol (C4H10S) is a represntative example can be deodourised by reaction with household bleach (NaOCl) accorbing to the equatio ... 
- 
		
		when will the study materiaaaaaaal be posted?? ... 
- 
		
		A weak base BOH of concentration 0.02 mole/litre has a pH value of 10.45.If 100 ml of the base is mixed with 10 ml of 0.1 M HCl, what will be the pH of the mixture? ... 
- 
		
		1. Two ... 
- 
		
		1. Two sets of four quantum no. of an electron are written below a.( n=4, l=3, s=1/2). ... 
- 
		
		10 ml of a mixture of Na2CO3 and NaHCO3 is titarted with 0.1 M H2SO4 solution. When phenolphthalein is used, it is observed that if 2.5 ml acid solution is added then the solution becomes colourless. After this when one drop  ... 
- 
		
		I have read somewhere.. the maximum covalecy that an atom can show is the total no. of orbitals it has. Weather filled or unfilled... And so in case of Boron its 1 + 3 = 4 how can we find the max. covalency of an element like ... 
- 
		
		A2 and B2 are two diatomic molecules with bond energies of A-A and B-B bonds as x and y respectively.If the bond energy of the molecule A-B formed up from A2 and B2 is z.Then,the resonance energy of molecules A-B will be A.(รข ...