Answer Happy

The sequence of reactions shown in the box is used for the preparation of silicon which is later purified for electronic applications. Which one choice CORRECTLY describes one of the reactions? i. SiO2(s) + 2 C(s) → Si(s)+2 CO(g) ii. Si(s) + 3 HCI(g) → SiHCl3(g) + H2(g) iii. SiHCl3(g) + H2(g) → Si(s) + 3 HCl(g) + O a. Some H is reduced in reaction (iii). O b. Some H is oxidized in reaction (ii). O c. Si is oxidized in reaction (). O d. Siis oxidized in reaction (ii). O e. Cl is reduced in reaction (iii).
An electromagnetic radiation has an energy of 185.46 kJ mor? What is its wavelength? a. 645 nm ob. 532 nm Oc578 nm Od 473 nm O e. 620 nm