Question
Write the IUPAC names of the following structural formulae: $\mathrm{HCOOH}$
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| Straight chain of carbon compound | Structural formula | Molecular formula | Name |
| C | ![]() | $CH _4$ | Methane |
| C - C | ________________ | _______________ | Ethane |
| C - C - C | ________________ | $C _3 H _8$ | ________________ |
| C - C - C - C | ![]() | ________________ | ________________ |
| Column A | Column B |
| (1) Magnification | (a) $\frac{1}{f}$ |
| (2) Power of a lens | (b) $\frac{h_2}{h_1}$ |
| (3) Focal length | (c) $f$ |
| (4) Distance of an object from a lens | (d) $u$ |
| (e) $\frac{h_1}{h_2}$ |
| Forms of Energy | Devices | |
| i. | Electric | ________________ |
| ii. | Mechanical | Sewing machine, Bicycle |
| iii. | Thermal | ________________ |
| iv. | ________________ | Solar cooker, Solar heater |