Which of the following statements is not corr | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Calcination is a process of heating an ore strongly in a limited supply of air or in the absence of air. $1$. Carbonate ores are converted into th

Vedclass · Accepted Answer

Lower oxidation state oxides are oxidised further

Vedclass · Answer

(D) Calcination is a process of heating an ore strongly in a limited supply of air or in the absence of air. $1$. Carbonate ores are converted into their oxides (e.g.,$ZnCO_3 \rightarrow ZnO + CO_2$). $2$. The temperature is kept below the melting point of the metal to prevent fusion. $3$. Volatile impurities are removed. $4$. Calcination does not involve the oxidation of lower oxidation state oxides to higher oxidation states; this is characteristic of roasting,where excess air is used. Therefore,the statement that 'Lower oxidation state oxides are oxidised further' is incorrect regarding calcination.

Which of the following statements is not correct regarding calcination?

Similar Questions

For a normal eye,the cornea of the eye provides a converging power of $40 \ D$ and the least converging power of the eye lens behind the cornea is $20 \ D$. Using this information,the distance between the retina and the cornea-eye lens can be estimated to be.......... $cm$.

Among $K$,$Mg$,$Au$,and $Cu$,the one which is extracted by heating its ore in air is

The major product in the following reaction is

If the angle between the circles $x^2+y^2-2x-4y+c=0$ and $x^2+y^2-4x-2y+4=0$ is $60^{\circ}$,then $c$ is equal to

The total work done on a particle is equal to the change in its kinetic energy. This is applicable:

Vedclass Test Series

Exam Paper Generator

Online Exam Module