ICSE − Q & A

STATE UR OBSERVATION:
Soln.s of PbNO3 and Sodium are mixed.
Does this mean solution of only PbNO3 or solution of sodium also?
And if it meas soln of sodium also woudnt that actually be sodium hydroxide?
And the observation would be chalky white ppt of lead hydroxide r8?

+ 1 more questions by akashskyash007  

colour of aluminium oxide,calcium oxide and lead hydroxide?
asked by Akash Ashok (akashskyash007) 7 years ago
2

A moment of silence for those who studied chem from Selina 
#nooffense

+ 1 more questions by anurag45  

Any gas other than O2 which rekindles a glowing splint??
asked by Officer Tenpenny (anurag45) 7 years ago
2

Is charles, boyles law in syllabus?

+ 2 more questions by firefistsabo  

In viraf dalal, there are about 20 alloys, are all of them in portion? Or only brass, bronze, german, solder, duralumin, stainless steel?
asked by Anant Abhyankar (firefistsabo) 7 years ago
1

Is charles, boyles law in portion?
asked by Anant Abhyankar (firefistsabo) 7 years ago
3

For conversions can we use technique not in the syllabus like linder catalyst, wolf kisshner, etc

+ 1 more questions by anuragmunshi  

is it cacl2.4nh3 or cacl2.8nh3 selina mentions the former while dalal mentions the latter. which is correct?
asked by Anurag Munshi (anuragmunshi) 7 years ago
1

http://www.respaper.com/darkprince/6141-pdf.html?ln=7&ov=1 Question 7 a
Please ans

+ 1 more questions by san_ika  

http://www.respaper.com/darkprince/6141-pdf.html?ln=7&ov=1 Question 7 a
asked by Xyz (san_ika) 7 years ago
0

barium chloride crystals contain 14.8% water of crystallization  .find the noof molecules of water of crystallization per molecule


guys plz tell the ans ;)

1.Common name of Propanone?
2.Alloy which expands on solidification?
3.Promoter used in Contact process?
4.Other name for Constant Boiling Mixture?
5.Compound used in Arsenic Purifier?
6._______ on heating produces Laughing gas?
7.Turpentine oil burst into flamed when _______ is poured on it?
8.First Organic Compound to be prepared in the lab?
9.Alloy composed of only Fe and Ni?
10.Gas which turns potassium iodide paper brown?
11.Litmus indicator is obtained from?
12.A Deliquescent substance which turns yellow on dissolving in water?
13.Layer formed on copper when it corrodes?
14.Name two ways in which the ore of aluminium,i.e,Bauxite is concentrated?(process)
15.Compound formed by the reaction between calcium oxide and silica?

Guys, This is the height of nonsense.
I request you to stop.
Please for God's sake.
Link: http://www.respaper.com/1478/about

State your observation:
1.Solutions of lead nitrate and sodium are mixed together.
2.Conc.H2SO4 reacts with H2S and cane sugar.
3.NH3 gas is burnt in air , passed over heated CuO.
4.Conc. HCl is poured on Trilead Tetroxide.

Thanks if you answer these questions 🙌🙌🙌

What is tetraethyllead?uses?