Carbon cannot be used in the reduction of \( \mathrm{Al}_{2} \mathrm{O}_{3} \) because : (a) it ...

Channel:
PW Solutions
Subscribers:
443,000
Published on ● Video Link: https://www.youtube.com/watch?v=HepdgCHV-MQ


Duration: 0:47
0 views
0

Carbon cannot be used in the reduction of \( \mathrm{Al}_{2} \mathrm{O}_{3} \) because :
(a) it is non-metal
(b) the heat of formation of \( \mathrm{CO}_{2} \) is more than that of \( \mathrm{Al}_{2} \mathrm{O}_{3} \)
(c) pure carbon is not easily available
(d) the heat of formation of \( \mathrm{Al}_{2} \mathrm{O}_{3} \) is too high
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2022-10-27Cinnabar is the ore of : (a) \( \mathrm{Zn} \) (b) \( \mathrm{Cd} \) (c) \( \mathrm{Hg} \) (d) \...
2022-10-27Which one contains both \( \mathrm{Ca} \) and \( \mathrm{Mg} \) ? (a) Limestone (b) Dolomite (c)...
2022-10-27When alumina is heated with carbon in nitrogen atmosphere, the products are : (a) \( \mathrm{Al}...
2022-10-27Electric furnaces are lined with magnesia because : (a) It is not affected by acids (b) It gives...
2022-10-27Boron can be obtained by various methods but not by : (a) thermal decomposition of \( \mathrm{B}...
2022-10-27If a metal has low oxygen affinity then the purification of metal may be carried out by: (a) liq...
2022-10-27Oxidation state of iron and chromium in chromite ore is : (a) 2,3 (b) 3, 2 (c) 2,2
2022-10-27On heating quick lime with coke in an electric furnace, we get : (a) \( \mathrm{Ca} \) and \( \m...
2022-10-27Which of the following reaction forms the basis of Goldschmidt alumino-thermite process? (a) \( ...
2022-10-27The extraction of zinc from zinc blende is achieved by: (a) electrolytic reduction (b) roasting ...
2022-10-27Carbon cannot be used in the reduction of \( \mathrm{Al}_{2} \mathrm{O}_{3} \) because : (a) it ...
2022-10-27Which ionic compound has the largest amount of lattice energy? (a) \( \mathrm{NaF} \) (b) \( \ma...
2022-10-27In the alumino-thermite process, \( \mathrm{Al} \) acts as : (a) an oxidising agent (b) a flux (...
2022-10-27The ionic bonds \( \mathrm{X}^{+} \mathrm{Y}^{-} \)are formed when : (I) electron affinity of \(...
2022-10-27The common features among the species \( \mathrm{CN}^{-}, \mathrm{CO} \) and \( \mathrm{NO}^{+} ...
2022-10-27\( \mathrm{N}_{2} \mathrm{O} \) has a linear, unsymmetrical structure that may be thought of as ...
2022-10-27The combination of atoms take slace so that : (a) they can gain two electrons in the outermost s...
2022-10-27In the Born-Haber cycle for the formation of solid common salt \( (\mathrm{NaCl}) \), the larges...
2022-10-27Which of the following molecular species/compound is not hypovalent? (a) \( \mathrm{CH}_{3}^{+} ...
2022-10-27Which condition favours the bond formation (where \( \mathrm{Fa}= \) force of attraction and \( ...
2022-10-27On decreasing internuclear distance below the optimum distance (where potential energy is minimu...


Tags:
pw