PACOP BABY - Sheet2

Question 1

1. The upper oxidizing zone of a nonluminous Bunsen flame consists largely of:
   A. Incandescent carbon
   B. A mixture of reducing gases and oxygen
   C. A large excess of oxygen
   D. Nitrogen
   E. Unburnt gas

Answer 1

C. A large excess of oxygen

Question 2

2. Less volatile substances may be detected in:
   A. Lower oxidizing zone
   B. Upper oxidizing zone
   C. Upper reducing zone
   D. Lower reducing zone
   E. Hottest portion of the flame

Answer 2

E. Hottest portion of the flame

Question 3

3. Sb imparts ______ color to the nonluminous Bunsen flame
   A. Crimson
   B. Yellowish green
   C. Green
   D. Blue
   E. Brick red

Answer 3

D. Blue

Question 4

4. Tl imparts ______ color to the nonluminous Bunsen flame
   A. Crimson
   B. Yellowish green
   C. Green
   D. Blue
   E. Brick red

Answer 4

C. Green

Question 5

5. In the micro-scale of qualitative analysis, the quantity of a substance employed is reduced by a factor of:
   A. 0.1
   B. 1
   C. 10
   D. 100
   E. 1000

Answer 5

D. 100