1. If only one stain is used for staining a specimen
A) Simple staining
B) Negative staining
C) Differential
staining
D) None of these
2. Other than the sample (specimen) the remaining
portion is stained then it is called
A) Simple staining
B) Negative staining
C) Differential staining
D) None of these
3. If more than one stain is used, such staining is
called
A) Simple staining
B) Negative staining
C) Differential staining
D) None of these
4. Gram staining is an example for
A) Simple staining
B) Differential
staining
C) Negative staining
D) None of these
5. The order of stains in Gram-staining procedure is
A) Crystal violet,
Iodine solution, Alcohol, Saffranine
B) Iodine solution,
Crystal Violet, Saffranine, Alcohol
C) Alcohol, Crystal
Violet, Iodine solution, Saffranine
D) None of these
6. The percentage of alcohol used in Gram staining is
A) 75% B) 90% C)
60% D) 25%
7. Gram positive bacteria appear as
A) Pink B) Violet C) both a & b D) None of these
8. Gram negative bacteria appear as
A) Pink B) Violet C) both a
& b D) None of these
9. The action of alcohol during Gram staining is
A) Allows the color
B) It adds color
C) Decolorises the cells
D) None of these
10. Staining material of Gram-positive bacterium is
A) Fast green
B) Haematoxylon
C) Crystal violet
D) Safranin
11. The staining technique used to stain the metachromatic
granules of Corynebacterium
A) Giemsa stain
B) Alberts stain
C) Acid fast staining
D) Both a and b
12. The procedure of differential staining of bacteria
was developed by
A) A H. Gram
B) H.C Gram
C) N.C Gram
D) H.A Gram
13. Mordant used in Grams staining is
A) Crystal violet
B) Iodine
C) Saffranin
D) All of these
14. Chlamydiae can be stained better with
A) Ziehl neelsen staining
B) Castaneda & Machiavello stains
C) Giminez stains
D) Both B and C
15. During staining for Electron Microscopy, the
method which improves contrast of specimen is
A) Positive staining
B) Negative staining
C) Shadow staining
D) None of these
16. Which of the staining technique helps in
demonstrating spore structure in bacteria as well as free spores?
A) Acid-fast stain
B) Endospore stain
C) Capsule stain
D) Flagella stain
17. Mycobacteria are stained with
A) Gram’s staining
B) Simple staining
C) Both a and b
D) Ziehl – Neelsen’s staining
18. Differential staining of bacteria spore is related
to
A) Albert’s staining
B) Lugol’ s staining
C) Moller’s staining
D) Indian ink preparation
Answers:
1-A |
2-B |
3-C |
4-D |
5-A |
6-B |
7-B |
8-A |
9-C |
10-C |
11-B |
12-B |
13-B |
14-D |
15-B |
16-B |
17-D |
18-C |