ICSE − Q & A

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


guys plz tell the ans ;)

Any gas other than O2 which rekindles a glowing splint??

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 🙌🙌🙌

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

What is tetraethyllead?uses?

http://www.respaper.com/dgenerationx/7723-pdf.html?cmd=conv solve it its nice

1st question 
A compound on heating  releases a   gas which rekindle a glowing splinter (other than o2)

Study break: any Hyderabadi here?