ICSE − Q & A

which school gives the best chemistry prelims paper

Popular (Potassium K) 
Scientist (sodium Na )
Can (Ca)
Make (Mg)
A (Al)
Zoo (Zn) 
In (iron Fe)
Low (lead Pb)
Humid (H)
Country (Cu) 
More (Mercury Hg) 
Satisfactory (Silver Ag)
After this remember Gold and Platinum

Can anyone pls tell me the ans of this question- Which solid evolves a coloured gas on prolonged exposure to air?

list of colors of metallic salts and other important compounds colors' (except metallic hydroxides)
plz it would be a great help!

Katrina (K)
Ne (Na)
Car(Ca)
Mangi (Mg)
Alto (Al)
Zen (Zn)
Ferrari (Fe)
Haay(oh!) (H)
Fir
Kyun (Cu)
Mili (Hg)
Silver(Ag)
Plated (Pt)
Audi(Au)
The best one ever!!!
this is as per Dr. Dalal

What does vitriol mean? (Just a doubt)

can we extract NH3 from NH4OH ? If yes how ?

Explain why polar covalent compounds can conduct electricity in the aqueous state.

why is it tht in the activity series Ca comes after Na but in the electrochemical series Na comes after Ca?

if u have any difficulty for remembering the activity series of metals here is an easy way for remembering that:
please-k
stop-Na
calling-Ca
me-Mg
a-Al
zebra-Zn 
in -Fe
library-Pb
hello -H
call -Cu
me-Hg
something-Ag
good-Au
hope this helped u:)