One of the specific gravity scales is “Brix” (used specifically for sugar solution). It is defined as ______________?

Related Mcqs:

1. A sugar solution containing _________________ percent sugar is equivalent to 1 Brix?

   A. 0.01
   B. 0.1
   C. 1
   D. 10

2. Specific gravity on API scale is given by the relation (where, G = specific gravity at 15.5°C) ?

   A. °API = 200(G – 1)
   B. °API = (141.5/G) – 131.5
   C. °API = (140/G) – 130
   D. °API = 145 – (145/G)

3. Which of the following gravity scales is used exclusively for liquids heavier than water ?

   A. Baume scale
   B. Twaddell scale
   C. API scale
   D. None of these

4. 80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?

   A. 0.00
   B. 0.18
   C. 0.24
   D. 1.00

5. An aqueous solution of 2.45% by weight H2SO4 has a specific gravity of 1.011. The composition expressed in normality is______________?

   A. 0.2500
   B. 0.2528
   C. 0.5000
   D. 0.5055

6. Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?

   A. log (1/H+)
   B. – log (1/H+)
   C. 1/log H+
   D. None of these

7. The elevation in boiling point of a solution is proportional to the ______________ of the solution?

   A. Molal concentration
   B. Reciprocal of the molal concentration
   C. Normality
   D. Molarity

8. The evaporation of aqueous solution of sugar causes its molarity to__________________?

   A. Decrease
   B. Increase
   C. Remain unchanged
   D. Either A. or B.; depends on the concentration of the solution

9. On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes_________________?

   A. 1
   B. 8
   C. 4
   D. 2

10. Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is________________?

    A. 20
    B. 32.2
    C. 45.35
    D. 58.65