ICSE − Q & A

Hello, This is urgent.
 It's the same bully who had earlier posted p*** pictures and is Bent on troubling me. He creates thousandsof accounts. Beware.
When you all weren't ther he had been doing it before too. 
Link: http://www.respaper.com/whoeven/about

+ 1 more questions by sdfg  

Guys, This is the height of nonsense. I request you to stop. Please for God's sake. Link: http://www.respaper.com/1478/about
asked by Sdfg Sdfg (sdfg) 7 years ago
6

Hi guys I am here to share some tips for chemistry exam
1.Firstly there's no strategy in setting the chemistry paper so it's better to revise all the chapters...
       Secondly don't struggle what to study or don't go on exploring  what is important and waste ur valuable time 
          Instead just do what I say take ur viraf .j. Dalalls textbook open the syllabus which u can just find it before index...the syllabus is so detailed I am sure if u just study what is given in the syllabus I will guarantee u a centum,and not even one question will come out of this boundary..many people study nook and corner of every textbook but they don't know what the syllabus is..so friends make sure u go through the syllabus and not neglect it..
      Coming to the chapters
1.Periodic table one of the most easiest chapters in chemistry mainly u should be knowing the trends in the periodic table and elements tilll argon..
2.Chemical bonding know about all the three bonds with an example comparisons and exceptions if any..
3.in acids bases and salts study  the basic definition of acids alkali and different types of salts with an example and all laboratory preparation with an example..
4.In mole concept know some basic numericals and some basic definition and when it comes to the laws u need to quote the same thing...and know to find the empirical formula.
5.know the information of different electrolysis given...and the reactions related and what is deposit on cathode anode and reasoning questions related to it...
6.metallurgy one of the lengthiest chapters know the extraction of aluminium and reactions related to it..and alloys their composition...know the differences with the exceptions.
  7.coming to the study of compounds,know their preparation and their uses and their reactions with colour changes etc..
8.coming to organic chemistry if it's asked it is asked more or NE or few questions so stress on the iupac names and on the prepations f alkanes alkenes and alkynes and alcohol esterification tests for unsaturation and all the reactions and also have a glance on practical chemistry and know the tests and colour changes for each gas...
       *********important************
1.where u find the colour changes in a reaction note them separately... and finally when u see u would lose marks bcoz of these questions these questions are slightly twisted so u must be accurate and not confused ...
2.Go through analysis of pupil performance..chemistry.   And also go through the syllabus keenly...
   3.In res paper go through the important points by Tony Stark ...might help u...
                 If u still have any queries u can feel free to message me I would try to help u to my best........
            All the best to all ICSE aspirants...........

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

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?

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 🙌🙌🙌