Easy Tutorial
For Competitive Exams

The methods chiefly used for the extraction of lead and tin from their ores are respectively

self reduction and carbon reduction
self reduction and electrolytic reduction
carbon reduction and self reduction
cyanide process and carbon reduction
Additional Questions

Which do not decolourise KMnO4 aqueous solution?

Answer

(NH4)2Cr2O7 on heating gives a gas which is also given by

Answer

Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect?

Answer

Which of the statements is not true?

Answer

During the extraction of gold the following reactions take place

Au + CN + H2O $\xrightarrow{O_2}$ [X]

[X] + Zn → [Y] + Au

X and Y are respectively

Answer

Which of the following is a Ferrous alloy

Answer

Identify the incorrect statement among the following

Answer

Which of the following pairs of elements cannot form an alloy?

Answer

Which of the following types of metals form the most efficient catalysts?

Answer

Which one of the following exists in the oxidation state other than +3?

Answer
Share with Friends
Privacy Copyright Contact Us