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Indian Certificate of Secondary Education (ICSE), New Delhi
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In brown ring test, conc. Sulphuric acid is poured from the sides of the test tube and not directly into it.Give reason.
asked by Anushree Pandit (anushree_pandit) 7 years ago
3
What property of an element is measured by its electro negativity?
asked by Shivaanee sharma (shivaanee22) 7 years ago
2
how many of you are planning to attempt an extra question if there's time?
asked by Eliz (eliz1995) 7 years ago
6
Let's see who can answer....
Why methane has a tetrahedral structure?
Source:Selina
asked by Richeek Das (hamba) 7 years ago
2
what's electro positivity ? how does it change across the period and group?
asked by Idk (dency66) 7 years ago
1
When excess lead nitrate was added to a solution of sodium sulphate, 15.5g of PbSO4 precipitated out. What mass of Sodium sulphate was required?
Na2SO4+Pb(NO3)2  ------  PbSO4(ppt.)+ 2NaNO3

Na=23;S=32;O=16;Pb=207;N=14
asked by 45Trolaf (olaf) 7 years ago
1
Copper,though a good conductor of electricity but an non electrolyte  (give reason )
asked by P.Vignesh (golaanvi) 7 years ago
2
Give reason: concentrated sulphuric acid maybe added during esterification of acetic acid.
asked by Shreyas Kulkarni (shreyas25164909) 7 years ago
2
Why does Nitrogen have more Ionization power than Oxygen?
asked by Mohammed Malik Sharaf (mmks1234) 7 years ago
3
Why does chlorine have more electron affinity than fluorine?
asked by Pewdiepie (pewdiepie_1) 7 years ago
2

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