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1. Extraction Process for various Elements; Elements/Compounds and their Uses, Civil Services - Notes | Study RAS RPSC Prelims Preparation - Notes, Study Material & Tests - RPSC RAS (Rajasthan)

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Extraction Process for various Elements

1.

Frasch Process

Sulphur

2.

Acheson process

Graphite

3.

Hall Herault

Aluminium

4.

Ostwald process

Nitric acid

5.

Bayer process

Extraction of Aluminium from ore

6.

Bessemer process

Steel from molten pig iron

7.

Patio process

Silver

8.

Dow process

Bromine

9.

Pidgeion process

Magnesium

10.

Fischer Tropsch process

Gasoline

11.

Azeotropic distillation

Absolute alcohol

 

 

 

Elements/Compounds & Their Uses

1.

Xenon

High speed photographic tubes. Electric valves & t.v. tubes

2.

Krypton

Incandescent bulb. Airfield lights because of characteristic red colour.

3.

Lithium

Deoxidizer and to remove unwanted gases during the manufacture of metals.

4.

Beryllium

X-ray (transparent) window. Moderator in nuclear reactions around the core.

5.

Neon

Neon lights. Cryogenics

6.

Hopsalite

Mixture of oxides of manganese, cobalt, copper & silver – Anti pollution

7.

Ammonia

Refrigerant, fertilizers

8.

Yttrium

Used in TVs to produce red colour

9.

Bismuth

Joined with iron to make it malleable

10.

Sodium

Street lamp

11.

Gadolinium

CDs. Aluminium is sometimes used to coat the disc.

12.

Cesium

Atomic clocks

13.

Tellurium

Tint glass (one way visibility used in cars).

14.

Technetium

Superconductor at -262 degree Celsius.

15.

Paraformaldehyde

Common disinfectant & contraceptives

16.

Potassium Dichromate

Used in breath analyzer for detecting alcohol. Safe limit is < .1 %.

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