In the extraction of aluminium, the function of cryolite is to: Options: A . &nbspLower the melting point of alumina B . &nbspIncrease the melting point of alumina C . &nbspRemove impurities from alumina D . &nbspMinimise the anodic effect

In the extraction of aluminium, the function of cryolite is to:

Question

In the extraction of aluminium, the function of cryolite is to:

Options:

A . Lower the melting point of alumina

B . Increase the melting point of alumina

C . Remove impurities from alumina

D . Minimise the anodic effect

Answer: Option A
:
A
Melting point of

A I_{2} O_{3}

is very high, adding impurities reduces melting point

Was this answer helpful ?

Next Question

Question 1. C(OH)4 is unstable because a carbon atom cannot hold more than one -OH groups but Si(OH)4 is a stable compound....than one -OH groups but Si(OH)4 is a stable compound because

Question 2. An inorganic compound (A) is a strong reducing agent. Its hydrolysis in water gives a white turbidity (B). A....chromyl chloride test. What is 'B' in the chemical reactions.

Question 3. The complete hydrolysis of (CH3)2SiCl2 forms-....

Question 4. Identify (X) to (Z) in the following sequence of reactions - CaO+C2000∘C−−−−&#....(X) to (Z) in the following sequence of reactions - CaO+C2000∘C−−−−→(X)+(Y) 1100∘C↓+N2 (z)hydrolysis−−−−−−→(P)gas

Question 5. Thallium shows different oxidation states because -....

Question 6. Aluminium vessels should not be washed with materials containing washing soda because:....

Question 7. An aqueous solution of potash alum is -....

Question 8. Orthoboric acid when heated to red hot gives....

Question 9. ....... is the by-product obtained in the Serpeck's process -....

Question 10. Treatment of concentrated solution of borax with calculated quantity of sulphuric acid gives....

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

DSP Combined 1 Free Revision Test SAIL JO E-0

GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0

BSP Plant Specific Review Test SAIL JO E-0

BSL Combined 1 Free Revision Test SAIL JO E-0

GFM Combined 1 Free Revision Test SAIL JO E-0