McqMate
| Q. |
5 METHODS OF SYNTHESIS(ARC-GROWTH, LASER ABLATION, CVD ROUTES, PLASMA CVD) |
| A. | 1992 |
| B. | 1991 |
| C. | 1990 |
| D. | 1993 |
| Answer» B. 1991 | |
| Explanation: carbon nano tubes are observed in an year 1991 in the soot of the graphite during the arc discharge. first production of cnt was in 1992 by arc discharge method. | |
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