Recent questions and answers in Isolation of Elements

asked Jun 23, 2017 by pady_1

1 answer

What is refining. Give any two methods of refining.

answered Jun 23, 2017 by pady_1

1 answer

What is refining. Explain any five methods of refining.

answered Jun 23, 2017 by pady_1

1 answer

Which type of reaction is called as Coupled reactions

answered Jun 23, 2017 by pady_1

1 answer

How to reduce metal oxide to metal?

answered Jun 23, 2017 by pady_1

1 answer

How to reduce metal oxide to metal?

answered Jun 23, 2017 by pady_1

1 answer

answered Jun 23, 2017 by pady_1

1 answer

answered Jun 23, 2017 by pady_1

1 answer

Explain Froth Flotation Process

answered Jun 23, 2017 by pady_1

1 answer

Explain Concentration of ore.

answered Jun 23, 2017 by pady_1

1 answer

What is Ores?

answered Jun 23, 2017 by pady_1

1 answer

The impurities present in the mineral are called

answered Feb 24, 2017 by dharmarajugopi

2 answers

(a) How is granular zinc & zinc dust obtained ? (b) Explain why thermit process is quite useful for repairing the broken parts of a machine ?

answered Dec 29, 2016 by sharmaaparna1

1 answer

(a) Why refractory metals are used in the construction of furnaces ? (b) What is pyrometallurgy ?

answered Nov 25, 2016 by meena.p

1 answer

Describe how the following changes are brought about : (i) Pig irons into steel (ii) Zinc oxide into metallic zinc

answered Nov 22, 2016 by meena.p

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a) What is the role of depressent in froth flotation process ? b) Out of C and CO, which is a better reducing agent for FeO? (i) In the lower part of blast furnace (Higher temperature ) (ii) In the upper part of blast furnace (lower temperature )

answered Nov 15, 2016 by meena.p

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Why is it advantageous to roast a sulphide ore to the oxide before reduction ?

answered Nov 7, 2016 by meena.p

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Differenciate between rate of reaction and reaction rate constant

answered Nov 4, 2016 by meena.p

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With the help of an example how one can separate two sulphide ores by froth flotation method .

answered Nov 3, 2016 by meena.p

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Account for the following : (i) Alkaline medium inhibits rusting of iron . (ii) Iron does not rust even if the zinc coating is broken in a galvanized iron pipe.

answered Oct 27, 2016 by meena.p

1 answer

Account for the following : (a) Chloro methane reacts with KCN to form ethanenitrile as main product and with $AgCN$ to form methyl isocyanide as chief product . (b) Chloroform should be stored in dark coloured bottles and these bottle should be completely filled .

answered Oct 20, 2016 by meena.p

1 answer

Give Reason The monoamino monocarboxylic acids have two PH values

answered Oct 17, 2016 by meena.p

1 answer