Biology; Chemistry; Physics: Post your doubts here!

[Tharindu]

yeah it mostly comes this way..

and all the metals of the 1 and 2 group make white compounds e.g MgO, CaO , Na2O..

Yea but CuO is black solid,,,FeO Is blue black....but aren't they from group 2

 

[asd]

These are oxides
oxides' colours differ.

 

[falcon678]

Is there a easy method to remember these...like group 1,11,7

well u ve to rote it m afraid..!!!

 

[Tharindu]

These are oxides
oxides' colours differ.

(( ya but u said compounds

 

[Spidey21]

Yea but CuO is black solid,,,FeO Is blue black....but aren't they from group 2

-____________--
I SAID GROUP 1 and 2....Copper and Iron are TRANSITION METALS!!

 

[asd]

(( ya but u said compounds

MEee?? nononon.

 

[Dashing Cancerian]

can someone give me tips about the phy atp..???

 

[Tharindu]

Is there a easy method to remember these...like group 1,11,7

Thanks

 

[Tharindu]

MEee?? nononon.

Oh ok

 

[Spidey21]

can someone give me tips about the phy atp..???

I have something really worth it!!
hope it helps you..
here..http://revisionguide.blogspot.com/p/physics-atp.html

 

[Tharindu]

Thanks everyone...finally got it....
All solids are silvery except copper which is pink
Iodine- purple
Bromine- brown
Chlorine- green
Copper sulphate- blue
Cobalt chloride- pink
Iron sulphate- blue
Magnesium sulphate- white
(sodium,magnesium,calcium) carbonate- white
Sulphur dioxide, carbon dioxide - colourlesss gases
( sodium,magnesium,calcium) oxide - white solid
Iron oxide- blue-black solid
Copper oxide- black solid

 

[asd]

I have something really worth it!!
hope it helps you..
here..http://revisionguide.blogspot.com/p/physics-atp.html

Ans to 64 is wrong.

 

[Dukeofwin]

All BIOLOGY experts,
please answer this,
The colour of Biuret Solution is Blue(checked from marking scheme),
however i wrote violet any chances of it being correct?
All those who did and didnot get it correct give your opinions

 

[Spidey21]

Ans to 64 is wrong.

ever heard the term..MULTIPLE ANSWERS??

 

[Spidey21]

All BIOLOGY experts,
please answer this,
The colour of Biuret Solution is Blue(checked from marking scheme),
however i wrote violet any chances of it being correct?
All those who did and didnot get it correct give your opinions

it only turns violet after it reacts with the Proteins..otherwise it has to be Blue..

 

[fatikhalid]

Ans to 64 is wrong.

how??

 

[asd]

ever heard the term..MULTIPLE ANSWERS??

I woulda gladly accepted it as another possible answer if it wasn't wrong.

 

[falcon678]

All BIOLOGY experts,
please answer this,
The colour of Biuret Solution is Blue(checked from marking scheme),
however i wrote violet any chances of it being correct?
All those who did and didnot get it correct give your opinions

dude am reali sori but no.....as said by spidy it goes purple AFTR reactin with protiens or amino acids...!!!

 

[asd]

That's to minimize the influence of the surrounding temperature on the temp. actually being measured.
It woulda been correct in case it was written oval shaped/pear shaped. If the walls are only thick, how would they magnify? They will only magnify if they were thick at one point and at others thinner, to act as a lens.

 

[asd]

I could somehow be wrong, but i don't think i am, because that answer doesn't go with the question.
similarly, answer to 63 also doesn't seem to be appropriate...