Download App

General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements2 Marks
Question
Explain the following:
Generally sulphide ores are converted into oxides before reduction.
✓

Answer

Sulphide ores cannot be reduced easily but oxide orde can be easily reduced, hrnce sulphild ores are grnerally converted into oxides brfore reduction.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from General Principles and Processes of Isolation of Elements→General Principles and Processes of Isolation of Elements — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Nitrogen exists as diatomic molecule and phosphorus as $P_4$. Why?
→
Explain the structure of amine compounds by drawing a diagram.
→
Write short note on trilodomethane (fodoform)
→
Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following points:
Atomic sizes.
→
How the following conversion can be carried out? Chlorobenzene to p-nitrophenol.
→
An element with density $11.2\ g\ cm^{-3}$ forms a f.c.c. lattice with edge length of $4 \times 10^{-8} $ cm.
Calculate the atomic mass of the element.
$($Given: $N_A= 6.022\times 10^{23}\ mol^{-1})$
→
Define the following terms:
  1. Abnormal molar mass.
  2. van’t Hoff factor (i).
→
When a zinc metal rod is placed in aqueous solution of $CuSO _4$ and is immersed, the blue colour of the solution disappears. Why?
→
Draw the structures of the following molecules:
  1. $XeF_{4.}$
  2. $BrF_{3.}$
→
Calculate the mass of compound $($molar mass $=256 \mathrm{~g} \mathrm{~mol}^{-1} )$ to be dissolved in $75$ g of benzene to lower its freezing point by $0.48\ K\ (K_f= 5.12\ K\ kg\ mol^{-1}).$
→