A. 20 control values C. 20 standard values
B. 10 control values D.10 standard values
E. NIL
2. What is the Normality of a 3.6 M Sulfuric acid solution given the molecular weights?( H=1, S=32, O-16)
a. 1.8 N b. 3.6N c. 4.9 N d. 7.2 N e. NIL
3. .How many grams of HCL is used to prepare 250 ml of a 4.8 solution of HCL? (H-1, Cl-35.5)
a. 36 G b. 36.5 g c. 40 g d. 43.8 g e. NIL
4. What is the Molarity of a 2 .5 N solution of NaOH?
a. 1.50 mol/l c. 3.35 mol/l e. NIL
b. 2.5 mol/l d. 4.5 mol/l
5. The molecular weight of H3 PO4 is:
a. 48 c. 98 e. NIL
b. 58.5 d. 98.1
6. How many grams of NaCl are required to make 1,000 ml. of 0.3 M solution?
a. 36.3 c. 26.32 e. NIL
b. 52.6 d. 53
7. What is the Molar concentration of a 20 grm. Of NaOH diluted to 1 liter of distilled water?
a. 1 M c. 0.5 M e. NIL
b. 2 M d. 1.5 M
8. What is the amount of CaCl2.H2O in grams is needed to prepare 0.4 N solution of
Ca Cl2?
a. 8.8 c. 16 e. NIL
b. 4 d. 32
9. One milligram is equal to:
a. 0.001 grm. c. 0.01 grm. e. NIL
b. 0.0001 grm. d. 0.1 grm.
10. A 10 mgs. % solution contains:
a. 10 mgs of solute/100ml of solution
b. 10 mgs of solute/100 ml of diluent
c. 10 mgs of solute/1000 ml of diluent
d. 10 mgs of solute/1000ml of solution
e. NIL
11. A 2 % solution of 10mg/100ml is diluted 1:100. What is the final concentration?
a. 2 % c. 0.2 % e. NIL
b. 0.02 % d. 0.002 %
ANSWERS WILL BE GIVEN NEXT WEEK.
No comments:
Post a Comment