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Recent questions and answers in General Principals and Processes of Isolation of Metals

Questions >> JEEMAIN and NEET >> Chemistry >> General Principals and Processes of Isolation of Metals

Zone Refing is generally carried out in inert atmosphere

answered Mar 27, 2019 by prachirajpoot07121999

1 answer

When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are?

answered Oct 22, 2018 by shibunj22

2 answers

The impurities associated with minerals used in metallurgy are called collectively?

answered Feb 26, 2018 by krutideepankar123

2 answers

Before introducing $FeO$ in blast furnace , it is converted to $Fe_2O_3$ by roasting so that

answered Apr 29, 2016 by shubhranshumalhotra.sm

2 answers

In a constant pressure process for $5$ mole of an ideal monoatomic gas, the temperature of gas increased from $300\;K$ to $500\; K$. Which of the following is incorrect regarding the process?

answered Jan 18, 2016 by meena.p

1 answer

The Axles are made by heating rods of iron embedded in charcoal powder . This process is known as

answered Feb 25, 2015 by Roger.Barrett

2 answers

When a metal is to be extracted from its ore and the gangue associated with the silica, then

answered Jul 6, 2014 by ramareddy629

2 answers

Magnetic oxide of iron is

answered Mar 20, 2014 by meena.p

1 answer

For highly reactive metals like alkali and alkaline earth metals, only way of reduction is

answered Mar 20, 2014 by meena.p

1 answer

The salt which is likely to be found in plant is

answered Mar 20, 2014 by meena.p

1 answer

The ore having two different metal atoms is

answered Mar 20, 2014 by meena.p

1 answer

The Impurities present in bauxite are

answered Mar 20, 2014 by meena.p

1 answer

The collectors like pine oil xanthates and fatty acids are used during froth-flotation process of concentration of ores to

answered Mar 20, 2014 by meena.p

1 answer

The gemstone ruby is an impure form of alumina having impurity

answered Mar 20, 2014 by meena.p

1 answer

In the electrolysis of brine for the production of chlorine , the by products are

answered Mar 20, 2014 by meena.p

1 answer

The Ellingham diagram are constructed for the formation of oxides of elements and they can predict.

answered Mar 20, 2014 by meena.p

1 answer

Small pipes, called tuyeres, are kept at the sides of blast furnace from where

answered Mar 20, 2014 by meena.p

1 answer

In Ellingham diagram, a straight line is obtained except

answered Mar 20, 2014 by meena.p

1 answer

The process that is not carried out while doing the concentration of an ore is

answered Mar 20, 2014 by meena.p

1 answer

The blast furnace used for smelting is provided with double cup and cone arrangement to

answered Mar 20, 2014 by meena.p

1 answer

Van arkel method is generally used for

answered Mar 20, 2014 by meena.p

1 answer

Zone Refining is based on process of

answered Mar 20, 2014 by meena.p

1 answer

The gemstone Saphire is an impure form of alumina having impurity of

answered Mar 20, 2014 by meena.p

1 answer

The pulverization of ores is done during

answered Mar 20, 2014 by meena.p

1 answer

The froth stabilizers, generally used during froth-floatation

answered Mar 20, 2014 by meena.p

1 answer

German silver does not have silver in it,its composition is

answered Mar 20, 2014 by meena.p

1 answer

The blast of hot air is introduced from tuyeres during extraction of iron at about.

answered Mar 20, 2014 by meena.p

1 answer

Among the following the wrong one is

answered Mar 20, 2014 by meena.p

1 answer

In goldsmith aluminothermic process, which of the following reducing agent is used.

answered Mar 20, 2014 by meena.p

1 answer

Mac Arthur Process is used for

answered Mar 20, 2014 by meena.p

1 answer

An Alloy is formed by mixing.

answered Mar 20, 2014 by meena.p

1 answer

The metal that is sometimes found native in nature .

answered Mar 20, 2014 by meena.p

1 answer

The one that is used automobiles and aeroplanes is.

answered Mar 20, 2014 by meena.p

1 answer

Silver containing lead as impurity is removed by.

answered Mar 20, 2014 by meena.p

1 answer

Pyrolusite is

answered Mar 18, 2014 by meena.p

1 answer

In extraction of iron the changes taking place in the blast furnace is

answered Mar 18, 2014 by meena.p

1 answer

Thomas stag is

answered Mar 18, 2014 by meena.p

1 answer

The substance not likely to contain CaCO3 is

answered Mar 18, 2014 by meena.p

1 answer

Silver containing lead as an impurity is removed by

answered Mar 18, 2014 by meena.p

1 answer

Cassiterite is an ore of

answered Mar 18, 2014 by meena.p

1 answer

Pyrolusite is a/an

answered Mar 18, 2014 by meena.p

1 answer

Among the following statements the incorrect one is

answered Mar 18, 2014 by meena.p

1 answer

Match correct answer using the codes given below :

answered Mar 18, 2014 by meena.p

1 answer

In Goldschmidt aluminothermic process, which of the following reducing agent is used

answered Mar 18, 2014 by meena.p

1 answer

Mac Arthur process is used for

answered Mar 18, 2014 by meena.p

1 answer

Heating of ore in the absence of air below its melting point is called

answered Mar 18, 2014 by meena.p

1 answer

Calcination is used in metallurgy for removal of?

answered Mar 18, 2014 by meena.p

1 answer

The method is very useful for preparing semiconductors is

answered Mar 18, 2014 by meena.p

1 answer

Cassiterite is concentrated by

asked Mar 18, 2014 by meena.p

1 answer

Cryolite is

asked Mar 17, 2014 by meena.p

1 answer

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