Biology; Chemistry; Physics: Post your doubts here!

[sourov97]

i don't think the bulb would even light up in solid lead bromide and molten sodium. About the other two options, graphite i think is a pretty good conductor as it is used as electrodes too. So mercury might be your answer

the CIE is very confusing, they say "least bright" but the ans is B, it wont light up!

 

[Saad Mughal]

the answers is C!

Well, our assumption that the molecule will react and condensation polymerization will occur with three of them is correct at least. The thing is, the third one is the tricky part since we haven't studied about one polymer containing both the linkages.

 

[usama321]

the CIE is very confusing, they say "least bright" but the ans is B, it wont light up!

hmmmmm well it was molten sodium, and molten metals conduct electricity, gosh, i said they won't BUT how in the world can solid lead bromide conduct

 

[Saad Mughal]

hmmmmm well it was molten sodium, and molten metals conduct electricity, gosh, i said they won't BUT how in the world can solid lead bromide conduct

Because CIE said so. Likeanepicrulingboss.

 

[usama321]

Because CIE said so. Likeanepicrulingboss.

likeaspoiledbrat*

 

[Saad Mughal]

likeaspoiledbrat*

*likearulingbodywhocontrolsmillionsofstudents. Word.

 

[sourov97]

Well, our assumption that the molecule will react and condensation polymerization will occur with three of them is correct at least. The thing is, the third one is the tricky part since we haven't studied about one polymer containing both the linkages.

the second one is amino acid...monomer of protein....what is the third one?

 

[usama321]

*likearulingbodywhocontrolsmillionsofstudents. Word.

likeamessedupchildwhomanipulatesotherinnocentchildrenwheneverthehellhewants. period

 

[Saad Mughal]

Ye Daadi jaan ko Like krny k ilawa koe kaam nhi?

 

[Saad Mughal]

likeamessedupchildwhomanipulatesotherinnocentchildrenwheneverthehellhewants. period

No comments. Its huge.

 

[usama321]

Ye Daadi jaan ko Like krny k ilawa koe kaam nhi?

yar public mai to thori laj rakh lia kero uski

 

[Saad Mughal]

the second one is amino acid...monomer of protein....what is the third one?

The third one is confusing. Its a mixture of that contains both the amine group and the alcohol group.

 

[sourov97]

option A is correct but isn't option D correct too?

 

[usama321]

View attachment 26553
option A is correct but isn't option D correct too?

maybe they did not draw the line between O and H.............still this makes no sense, CIE examiners have gone mad

 

[sourov97]

please explain this one too!

 

[papajohn]

View attachment 26553
option A is correct but isn't option D correct too?

Isotope Metha-1-ol etc

 

[ZaqZainab]

View attachment 26556
please explain this one too!

Is it B

 

[usama321]

View attachment 26556
please explain this one too!

it should be b. this is so as only addition polymerisation is possible here, and the first CH3-CH2 represent the C2H5 in the question, followed by the double bonds at the end which makes it the right choice

 

[sourov97]

what is the answer C or D ?

 

[sourov97]

answer pls!