The common adulterant found in red chili powder is
Coloured saw dust
The correct answer is A.
Explanation of Correct answer:
Common adulterants in red chilli powder are soapstone, and brick powder which is hazardous to health.
Explanation of incorrect options:
Option B:
Tea powder is adulterated by tamarind seeds, red ash, detergent powder, etc.
Option C:
Metal yellow is an adulteration used in sweets for colour.
Option D:
Papaya seed powder is a common adulterant for whole black pepper.
Final answer: The common adulterant found in red chilli powder is coloured sawdust.