ICSE − Q & A

Why titration is necessary in case of preparation of Na2SO4? Is it also needed in case of neutralization of weak bases like Cu(OH)2?

+ 1 more questions by skshooda  

Why does sulphite and carbonate ions love hydrogen ion more than active metal ions?
asked by Satendra singh (skshooda) 7 years ago
1

how is Fe3O4 and Pb3O4 formed...(trick q out of scope)

Hi guys, hope all of your exams r going on well... Plz do take some pains to clear some of my doubts...
1. What happens to the other ions during preferential discharge other than the ones that are discharged?
2.Is it necessary to give an acid during electroplating in the electrolyte?
3.Is a block of silver or a hollow cylinder of silver used in electroplating?
4.Dissociation of NaCl in water is 99%. What do u mean by it?
5. In electrolysis of fused PbBr2, is there deposition of lead on the cathode or on the base of the vessel?

Additional questions:
1.Are we to draw stuff like rheostat, ammeter, battery, key etc etc in electrolysis diagrams?
2. Is current or voltage asked in exam?

Thanks in advance!!

Why is methane also called marsh gas?

Ostwald process in syllabus ???

What's the colour of potassium nitrite (KNO2)?

Difference between titration and neutralisation?

Please guide me where can I get answers to physics Icse 2017 paper

Give a test to distinguish between
@ ethanol and acetic acid
Is in I can use neutral ferric chloride solution with Acetic Acid which will give wine red colour

are double mixed and complex salts in the syllabus???