Opacity around colonies of Clostridium perfringens is due to_________________?

Related Mcqs:

1. On a stained slide, clostridium tetani has the appearance of a__________________?

   A. Bunch of a
   B. Chain of beads
   C. Drum stick
   D. Safely pin

2. Which among the following is the drug of choice for clostridium difficile induced colitis ?

   A. Gentamicin
   B. Ciprofloxacin
   C. Metronidazole
   D. Linezolid

3. The opacity in ceramics is achieved by adding_______________?

   A. Boric oxide
   B. Copper oxide
   C. Silica
   D. Titanium oxide

4. Radio opacity to composite resins is rendered by_______________?

   A. Silica glass
   B. Organic matrix
   C. Barium glass and strontium glasses
   D. Fluoride particles

5. Which of the following provide opacity to composite ?

   A. TEGDMA
   B. BIS-GMA
   C. Ti02
   D. None of the above

6. Grape bunch shaped colonies are seen in______________?

   A. Streptococcus
   B. Staphylococcus
   C. E.coli
   D. Gonococci

7. A child presents with infective skin lesions of the leg. Culture was done which showed gram positive cocci in chains and haemolytic colonies. Which of the following tests will best identify the organism ?

   A. Bile solubility
   B. Optochin sensitivity
   C. Bacitracin sensitivity
   D. Cataslase positive

8. Suck back porosity is due to_________________?

   A. Attached impurities on undersurface of casting
   B. Hot spot
   C. No rapid cooling
   D. Inadequate melting temperature

9. Green stains which occur frequently in children are due to_________________?

   A. Enamel deficiency
   B. Dentin deficiency
   C. Material alba
   D. Chromogenic bacteria

10. Malignant pustule is referred to_________________?

    A. Facio-cervical actinomycosis
    B. Cutaneous anthrax
    C. Infected squamous cell carcinoma
    D. None of the above