std 8 science Ekam kasoti paper solution 2020 || Ekam kasoti || dhoran 8 vigyanpaper solutions

The solution of 8x=6(mod14) is

10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount HCl solution (the same solution as before) required to neutralise it will be (i) 4 mL (ii) 8 mL (iii) 12 mL (iv) 16 mL

The molarity of an aqueous solution of NaOH containing 8 g in 2L of solution is

The equation ((log)_8(8/(x^2)))/(((log)_8x^2))=3 has- a. no integral solution b. one natural c. two real solution d. one irrational solution

x+2 = 5 and 3x-1=8 have the same solutions.

The mole fraction of a solvent in a solution is 0.8 . The mole fraction of the solute will be _____.