3C+2Al2O3⟶4Al+3CO2 (from bauxite) 4 moles of Al is produced by 3 moles of C 1 mole of Al is produced by 43 mole of C 104 moles of Al is produced by 43×104 moles of C Amount of carbon used =43×104×12 g=90000 g=90 kg
NEET UG 2005 — Chemistry Physical Chemistry
The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of a aluminium metal from bauxite by the Hall process is: (Atomic mass : A1 = 27)
Held on 30 Apr 2005 · Verified 9 Jul 2026.
270 kg
540 kg
90 kg
180 kg
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
The unit of rate constant for a first-order reaction is:
For the reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), ΔH = -198 kJ. Which condition favours forward reaction?
$\begin{aligned} &\text { Consider the following compounds: }\\ &\mathrm{\underline{K}O}_2, \mathrm{H}_2 \mathrm{\underline{O}}_2 \text { and } \mathrm{H}_2 \mathrm{\underline{S}O}_4 \text {. } \end{aligned}$ The oxidation states of the underlined elements in them are, respectively,
5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which of the following is true regarding the described solution?
For the reaction $\mathrm{A}(\mathrm{g}) \rightleftharpoons 2 \mathrm{~B}(\mathrm{~g})$, the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500 , at 1000 K . [Given : $\mathrm{R}=0.0831 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$ ] $\mathrm{K}_{\mathrm{p}}$ for the reaction at 1000 K is
Work through every NEET UG Physical Chemistry PYQ, year by year.