When sputum sample from tb patient is gram stained, it presents as purple (gm +ve) bacili.
a. true
b. false

The correct answer is b. False

Explanation:

TB patient is affected with Mycobacterium tuberculosis and it's cell wall contains mycolic acid. This is a waxy coating which makes it's surface impermeable to gram stain. So it cannot be stain by gram staining and can be seen violet or pink after gram staining.

So the correct answer is b. false

the answer to your question is b