English
Maharashtra State BoardSSC (English Medium) 10th Standard

The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.

Advertisements
Advertisements

Question

The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.

Options

  • Right

  • Wrong

MCQ
True or False
Advertisements

Solution

The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point- Wrong

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Metallugy - Right or Wrong sentence

RELATED QUESTIONS

Name the gas in air which tarnishes silver articles slowly.


How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.


Define the term mineral.


Define the term gangue.


Name the gas evolved when cinnabar ore is roasted.


How is aluminium metal extracted? Explain with the help of an equation.


Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.


Which of the following metals can be obtained from haematite ore?


Give reasons, why aluminum is used in:

In aluminiothermy


Explain the following:
Galvanization protects iron from rusting.


State three objectives achieved during the roasting of ores.


If Cu, Fe, Zn, Al elements are arranged in increasing order of their reactivity then the correct order would be which of the following?


Find the odd one out and give its explanation.


Mercury, silver, gold are highly reactive metals.


Explain the reactions of nonmetals with water with the help of examples.


Explain the following reaction with the balanced equation.

Ferric oxide is reacted with aluminium.


Explain in brief electrolytic reduction of alumina with a neat labelled diagram.


2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be


The given reaction shows one of the processes to extract the metals like Iron and Manganese.

\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]

Give a reason why Aluminium is preferably used in thermite reactions.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×