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Subject: Chemistry, asked on 8/2/16

how will you separate a ppt of lead sulphate obtained by adding sulphuric acid to a solution of lead nitrate?? 

Subject: Chemistry, asked on 2/1/16

What is Vapour Pressure?

Subject: Chemistry, asked on 1/1/16

why Sodium Chloride(NaCl)is a pure substance ????

Subject: Chemistry, asked on 19/12/15

what is this showing?

Subject: Chemistry, asked on 20/9/15

How will you separate iodine from chloroform

Subject: Chemistry, asked on 20/9/15

Pick the odd one out
Alcohol in water, benzene in toluene, colouring materials in ink, fractions of petroleum
Please do reply ASAP
I have an exam tomorrow morning at 8Am

Subject: Chemistry, asked on 15/9/15

A molecular formula represents an element True or false?

Subject: Chemistry, asked on 11/9/15

name three different methods in each case for separation of ;
a) solid - solid mixture
b) solid - liquid mixtures
c) liquid - liquid mixtures
give one example in each case

Subject: Chemistry, asked on 10/9/15

how would you separate
a) lead sulphate from a mixture of lead sulphate & lead chloride
b) ZnCO3froma mixture of ZnCO3 & Na2CO3
​c) benzene from toluene

Subject: Chemistry, asked on 9/9/15

explain me all the types of bonds in a detailed manner

Subject: Chemistry, asked on 1/9/15

name the method employed to separate two liqiuds

Subject: Chemistry, asked on 1/9/15

give ex of the following mixture & state whether they are homogeneous or heterogenous
a) two solids b) a solid in liquid c) liquids d) liquid & gas

Subject: Chemistry, asked on 2/8/15

how will you separate a mixture of
a) sugar & sand b) sugar & salt c) sand & alum d) sodium chloride & sulphur e) chlorides of ammonium & silver f) iodine & ammonium chloride g) camphor & sand h) iron fillings & powdered carbon

Subject: Chemistry, asked on 2/8/15

how will you obtain
a) scrap iron from waste materials in industries
b) iron nails fom a mixture of saw dust and iron nails

Subject: Chemistry, asked on 2/8/15

a) two chlorides which are insoluble in water
b) two sulphates which are insoluble in water
c) two carbonates which are soluble in water
d) a non metallic sulphate soluble in water

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