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Asked by Swathi Ambati

Dec 31, 2014

Aluminium is a highly reactive metal. But why it is used for making utensils for cooking?

Alumin...

Answer (4)

Asked by R murali

Jul 18, 2014


  1. Show the formation of Na2O and MgO by the transfer of electrons


Ans: Atomic number of Sodium (Na) – 11
Electronic configuration of Sodium – 1s2 2s2 2p6 3s1
It has one valence electron, it will lose one el...

Answer (1)

Asked by Rujuta Killedar

Sep 24, 2014

What is a thermit reaction??wat are its types??give egs.

THERMITE?????

Answer (2)

Asked by Keisam Robin

Jan 19, 2015

When a green iron salt is heated strongly its colour finally changes to black and odor of burning sulphur is given out. 1. Name the iron salt 2. Name the type of reaction that takes place during heating of iron salt. 3. Write the balanced chemical equation for the reaction involved.

   

Answer (1)

Asked by Adithyan Sanal

Apr 25, 2015

When you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with brisk effervescence. Name this gas. Describe the method of testing this gas

Sodium hydrogencarbonate on reaction with acetic acid releases c...

Answer (1)

Asked by R murali

Jul 18, 2014


  1. An element reacts with oxygen to give a compound with high melting point. This compound is also soluble in water. The element is likely to  be                                                          (a) Ca (b)C  (c)Si  (d) Fe


When carbon reacts with oxygen it forms carbon dioxide. this carbon dioxide is a gas. gases do not possess melting point. so option B is not correct
Silicon reacts with oxygen and forms silicon dioxide. ...

Answer (1)

Asked by R murali

Jul 18, 2014


  1. Why is sodium chloride soluble in water but not in kerosene or petrol?


This answer has an image. Please click on the question to read more.

Answer (2)

Asked by Mr s n tiwari

Sep 11, 2014

A few drops of sulphuric acid are added into water before electrolysis. why?

Ans :Electrolysis of pure water is very low because water is an covalent compound so it can't ionize to release ions. To increase the conductivity of water a few drops of sulphuric acid is added .Being a st...

Answer (1)

Asked by Swathi Ambati

Jan 2, 2015

Why copper is added to pure gold for making ornaments?

Pure gold is very soft and it is not used for making jewellery. Copper or silver is added to pure gold to make it hard. Pure gold is called 24 carat go...

Answer (2)

Asked by R murali

Jul 18, 2014


  1. Why do ionic compounds do not conduct electricity in solid state. But conduct electricity in molten state?


Ionic compounds are composed of two elements. The ionic bond between these two elements is strong. In solid state there is no availability of free electrons and also there is no probability for the formation of...

Answer (1)

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