Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The output gases from downdraft gasifier are relatively cleaner compared to gases from updraft gasifier
Reason R: In downdraft gasifier the products from the pyrolysis zone and drying zone pass through oxidation zone causing thermal cracking of volatiles
In light of the above statements, choose the correct answer from the options given below

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is NOT the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Hint:

To remember the difference:
- Downdraft: Tar flows through the fire $\rightarrow$ Tar is burned (cleaner gas).
- Updraft: Tar flows away from the fire $\rightarrow$ Tar escapes (dirtier gas).

Answer 1

The Correct Option is A