

MCQOPTIONS
Saved Bookmarks
1. |
What colour is obtained when a strip of filter paper soaked in saturated solution of o-nitrobenzaldehyde in dilute NaOH is held over the prylotic vapours of Nylon 6,6? |
A. | grey |
B. | black |
C. | red |
D. | yellow |
Answer» C. red | |