Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution ?

Related Mcqs:

1. The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6) ?

   A. 4.4
   B. 5.6
   C. 8.4
   D. 2.4

2. Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?

   A. °C
   B. °F
   C. °K
   D. °R

3. The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?

   A. Base and strong acid
   B. Base and weak acid
   C. Acid and weak base
   D. None of these

4. The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their__________________?

   A. Equivalent weight
   B. (Equivalent weight)2
   C. Molecular weight
   D. (Molecular weight)2

5. Diffusion co-efficient of a metal in a solid solution depends upon its ?

   A. Composition
   B. Temperature
   C. Both A. & B.
   D. Neither A. nor B.

6. The two elements required to form substitutional solid solution should not have___________________?

   A. Same crystalline structure
   B. Same valency
   C. Widely differing electronegativity
   D. Same atomic sizes

7. Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is_______________?

   A. R ln 2
   B. -R ln 2
   C. 3 R ln 2
   D. -3R ln 2

8. The activity co-efficient of the solute in a dilute solution ?

   A. Decreases with the increase of concentration of the solute
   B. Increases with the increase of concentration of the solute
   C. Remains constant
   D. Is unity at infinite dilution

9. What happens, when SO2 is passed through a solution of H2S in water ?

   A. Precipitation of sulphur takes place
   B. H2SO3 is formed
   C. Oleum is formed
   D. None of these

10. Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as______________________?

    A. Re0.5, Re0.8
    B. Re0.8, Re-0.5
    C. Re0.8, Re0.5
    D. Re-0.8, Re0.5