Biology; Chemistry; Physics: Post your doubts here!

[asadalam]

I think we should write both
no reaction and no precipitate formed

IT SPECIFICALLY REJECTS NO REACTION,WHY MAKE THINGS COMPLICATED,JUST SAY NO PPT.

 

[Faizan Muhammmad]

But it says precipitate forms.

somebody tell me the mark scheme which says this

 

[Faizan Muhammmad]

IT SPECIFICALLY REJECTS NO REACTION,WHY MAKE THINGS COMPLICATED,JUST SAY NO PPT.

why?
gimme the ms name

 

[funky brat]

IT SPECIFICALLY REJECTS NO REACTION,WHY MAKE THINGS COMPLICATED,JUST SAY NO PPT.

But you said a slight precipitate. So confusing. :/

 

[asadalam]

But you said a slight precipitate. So confusing. :/

Guys wait lemme find the ms.

 

[asadalam]

Here you go,Q9 c

 

[Faizan Muhammmad]

OHhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh I get it
No reaction isnt wrong but since we have to mention observation no precipitate is correct

 

[funky brat]

Here you go,Q9 c

You life saver.

 

[asadalam]

You life saver.

Bss dua karo pliss

 

[funky brat]

Bss dua karo pliss

Duas for everyone. :')

 

[Faizan Muhammmad]

Duas for everyone. :')

^your post was 16000th

 

[Faizan Muhammmad]

I no have time for P4s
Jo Jo ajeeb cheezain milain bta daina !!

 

[Abdul Hanan]

guys can you tell me which compound colours to learn?
and in the straight lines of intersection graphs (usually temp-time) i know the first line is to be started from origin but the second horizontal intersection line , should it be extended to touch the y-axis?...

 

[asadalam]

guys can you tell me which compound colours to learn?
and in the straight lines of intersection graphs (usually temp-time) i know the first line is to be started from origin but the second horizontal intersection line , should it be extended to touch the y-axis?...

Yes

 

[funky brat]

Yes

You mean both lines should be extended beyond the point where they intersect? I erase the extra part, deliberately.

 

[funky brat]

guys can you tell me which compound colours to learn?
and in the straight lines of intersection graphs (usually temp-time) i know the first line is to be started from origin but the second horizontal intersection line , should it be extended to touch the y-axis?...

Yes

Post-man tell him what to learn.

 

[funky brat]

^your post was 16000th

An achievement, seriously.

 

[asadalam]

You mean both lines should be extended beyond the point where they intersect? I erase the extra part, deliberately.

Yes we should extend as the er rejects that they may be removed and a curve be formed.

 

[asadalam]

guys can you tell me which compound colours to learn?
and in the straight lines of intersection graphs (usually temp-time) i know the first line is to be started from origin but the second horizontal intersection line , should it be extended to touch the y-axis?...

1. Group 1, 2 metals are white/silvery white. Group 3 metals are shiny grey. Their compounds are white and their solutions are colourless.
2. Zinc is a grey solid, its compounds are white.
3. Lead is a shiny bluish metal, Iron is a shiny blackish solid.
4. Iron (II) salts are green. Iron (III) salts are red-brown.
5. Chlorine is a green gas. Silver chloride and Lead chloride are white.
6. Bromine is a red-brown gas. Silver bromide and Lead bromide are cream coloured.
7. Iodide is a black solid. Its vapours are purple. Silver iodide and lead iodide are yellow.
8. Copper is a pinkish solid. Copper (II) sulphate, Copper (II) hydroxide and Copper (II) nitrate are blue.
9. Copper (II) chloride and Copper (II) carbonate are green.
10. Nitrogen dioxide is a brown gas. Sulphur and Phosphorous are Yellow solids with different flames.

 

[funky brat]

Yes we should extend as the er rejects that they may be removed and a curve be formed.

Thanks, dude.