The variation of equilibrium constant with temperature is given below : Temperature Equilibrium Constant T1= 250C K1= 10 T2= 1000C K2= 100 The... View Article
The INCORRECT statement is: 1) Cast iron is used to manufacture wrought iron. 2) Brass is an alloy of copper and nickel. 3) German silver is an... View Article
A 100 mL solution was made by adding 1.43 g of Na2CO3. xH2O. The normality of the solution is 0.1 N. The value of x is ________. (The atomic mass... View Article
The number of molecules with energy greater than the threshold energy for a reaction increases fivefold by a rise of temperature from 27°C to... View Article
The osmotic pressure of a solution of NaCl is 0.10 atm and that of a glucose solution is 0.20 atm. The osmotic pressure of a solution formed by... View Article
1) Ca 2) Be 3) Mg 4) Sr Answer: (2) Fact BeSO4 is water soluble. Be(OH)2 is water insoluble. BeO is stable to heat. Hence option 2 is the answer.... View Article
(a) W(VI) is more stable than Cr(VI). (b) in the presence of HCl, permanganate titrations provide satisfactory results. (c) some lanthanoid... View Article
1) Photochemical smog and ozone layer depletion 2) Photochemical smog and global warming 3) Global warming and photochemical smog 4) Global... View Article