McqMate
| Q. |
Which of the following acid is used by goldsmiths for cleaning gold and silver ornaments? |
| A. | HCL |
| B. | H2SO4 |
| C. | HNO3 |
| D. | H3PO4 |
| Answer» C. HNO3 | |
View all MCQs in
Biology-Physics-Chemistry (GK)No comments yet