Question
Why are sulphide ores converted to oxide before reduction?
✓
Answer
Sulphides are not easily reduced while oxides are easily reduced. Due to this, sulphides are first oxidised and then subjected to reduction.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An organic compound with the molecular formula $C_9H_{10}O$ forms $2,4-DNP$ derivative, reduces Tollens’ reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives $1, 2-$benzenedicarboxylic acid. Identify the compound.
→Examine the given defective crystal:
Answer the following questions:
Answer the following questions:
- What type of stoichiometric defect is shown by the crystal?
- How is the density of the crystal affected by this defect?
- What type of ionic substances show such defect?
Convert Toluene to m-Nitrobenzoic acid.
In terms of band theory, what is the difference between:
- A conductor and an insulator?
- A conductor and a semiconductor?
In term of band theory, what is the difference:
Between a conductor and an insulator.
Between a conductor and an insulator.
Why are vitamin A and vitamin C essential to us? Give their important sources.
In the reaction $2 A( g )+ B ( g ) \rightleftharpoons 2 C ( g )$, what will be the effect on the reaction rate if the volume of the vessel is increased to its initial volume and what will be the change in order of the reaction due to the change in volume?
→Lithium metal crystal has body-centred cubic structure. Its density is $0.53g/\ cm^{-3}$ and its molar mass is $6.94g/ \ mol^{-1}.$ Calculate the volume of a unit cell of lithium metal. $[N_A = 6.023 \times 10^{23}\ mol^{-1}]$
→Complete the following reactions by identifying A, B and C.
$\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\text{CH}_3-\text{C}-\text{C}-\text{CH}_3\ +\ \text{NaOI}\ \rightarrow\ \text{B}\ +\ \text{C}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ | \ \ \ \ \ \ || \ \\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\text{O}$
→$\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\text{CH}_3-\text{C}-\text{C}-\text{CH}_3\ +\ \text{NaOI}\ \rightarrow\ \text{B}\ +\ \text{C}\\ \ \ \ \ \ \ \ \ \ \ \ \ \ | \ \ \ \ \ \ || \ \\ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\text{O}$
Explain boiling point and melting point of dihalo-benzene. ### Give reason why melting point of P-Dichloro benzene is more than ortho and meta isomers.