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Manikanth

May 17, 2014

#### Why should curd and sour substances not be kept in brass and copper vessels?



sour substances are cidic in nature,i.e, they have acids in them. So, when they are kept in brass or copper vessels, they react...

May 1, 2015

####  List two tests for experimentally distinguishing between an alcohol and a carboxylic acid.



Alcohols and carboxylic acids can be distinguished by litmus test and ...

Rujuta Killedar

Feb 19, 2015

#### A mixture of oxygen and ethyne is burnt for welding.can you tell why a mixture of ethyne and air is not used?



When ethyne is burnt in air incomplete burning takes place and produce sooty flam...

Prathik Bannimath

Sep 28, 2014

#### WHY DO CRYSTALS OF WASHING SODA CHANGE TO WHITE IN COLOUR ON EXPOSURE TO AIR?



When washing soda is exposed to air, it loses its water of crystallisation and becomes Na2CO3 (sodium carbonate) generally we can say when it is left open in the dry air, lose its water of crystallizati...

Swathi Ambati

Dec 26, 2014

#### During summer, milkman generally adds a little amount of baking soda to fresh milk. Why?



Baking soda is a base. It is ad...

Manikanth

May 17, 2014

#### What is the common name of the compound CaOCl2?



The most common name of caocl2 is bleaching powder

Dec 29, 2014

#### Why ammonia is considered as a base even though it does not contain hydroxyl ion?



Ans: Ammonia when dissolved in water it forms ammonium hydroxide....

Shine

May 22, 2014

#### acid bases and saltsdoes base react with non metal ? if yes.then give some examples



Reaction of nonmetal oxide with base:
CO2 + 2NaOH → Na2CO3 +H2O

Apr 25, 2015



Girish

Sep 9, 2013

#### during summer season .a milkman usually adds a very small amount of baking soda to milk . why ?



lactobacillus increases which converts into lactic acid decreasing the pH of milk During summers,temperature is high and hence The milkman adds baking soda to the milk to increase the pH ...

Manikanth

May 17, 2014

#### Why should curd and sour substances not be kept in brass and copper vessels?



sour substances are cidic in nature,i.e, they have acids in them. So, when they are kept in brass or copper vessels, they react...

May 1, 2015

####  List two tests for experimentally distinguishing between an alcohol and a carboxylic acid.



Alcohols and carboxylic acids can be distinguished by litmus test and ...

Rujuta Killedar

Feb 19, 2015

#### A mixture of oxygen and ethyne is burnt for welding.can you tell why a mixture of ethyne and air is not used?



When ethyne is burnt in air incomplete burning takes place and produce sooty flam...

Prathik Bannimath

Sep 28, 2014

#### WHY DO CRYSTALS OF WASHING SODA CHANGE TO WHITE IN COLOUR ON EXPOSURE TO AIR?



When washing soda is exposed to air, it loses its water of crystallisation and becomes Na2CO3 (sodium carbonate) generally we can say when it is left open in the dry air, lose its water of crystallizati...

Swathi Ambati

Dec 26, 2014

#### During summer, milkman generally adds a little amount of baking soda to fresh milk. Why?



Baking soda is a base. It is ad...

Manikanth

May 17, 2014

#### What is the common name of the compound CaOCl2?



The most common name of caocl2 is bleaching powder

Dec 29, 2014

#### Why ammonia is considered as a base even though it does not contain hydroxyl ion?



Ans: Ammonia when dissolved in water it forms ammonium hydroxide....

Shine

May 22, 2014

#### acid bases and saltsdoes base react with non metal ? if yes.then give some examples



Reaction of nonmetal oxide with base:
CO2 + 2NaOH → Na2CO3 +H2O

Apr 25, 2015



Girish

Sep 9, 2013