Physics Paper 3 2012 discussion (I have the qp)

[EpicLol]

Hiiiii...how r u?
hope doing well in studies!
TodAY I was bored so I went through O-level (NoT IGCSE) past papers to practise paper 1....I found them really HARD ......
check this paper and explain to me questions 9, 14, 21, 26, 31, 32, 33, 40...plz and thanks...
question 40 I thnk came for igcse too...which I can't get so plz concentrate on it more cauz I cant get it at all..
http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_w11_qp_11.pdf
answers: http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_w11_ms_11.pdf

BEST WISHES!

yeah Im not that great at bio so yeah....I can try to help in chem and phys O levels

 

[IGCSE O/L student]

svenas
i'm fine. wbu?
i'll try
thanks
Q9 i don't understand it either. i expected the answer to be B
Q14 the blood vessel has to be a vein. which means it takes blood to the heart. so 1 has to be heart, and 2 has to be brain
Q21 the fat acts as a good insulator. i'm sure you must have thought A was the answer. the reason it's not the answer is because sweat glands are not secreted. it's sweat that's secreted
Q26 bacteria is the main ingredient in both cheese and yoghurt. the other two processes are also important in the production of cheese and yoghurt.
Q31 AIDS is caused by a virus, and malaria is caused by a protoctist called plasmodium. malaria is transferred or is spread by an insect, the mosquito
Q32 the size of the holes in a fishing net has nothing to do with the reproduction of fish!
Q33 if plants are to be produced asexually(where the new plants are genetically identical to the parent plants), plants are cut with part of the stem
Q40 if any phenotype shows the recessive characteristic, it has to be homozygous recessive. if it was heterozygous, it would show the dominant feature, not the recessive.

I hope I've helped you!
All the Best!

 

[IGCSE O/L student]

svenas
please ask me if you have more doubts
i'll be glad to clear them

 

[svenas]

svenas
please ask me if you have more doubts
i'll be glad to clear them

THANKS ALOOOOOOt.... can u plz re-explain to me q 40 and 14...
Thanks!

 

[IGCSE O/L student]

THANKS ALOOOOOOt.... can u plz re-explain to me q 40 and 14...
Thanks!

Q14 valves are present in veins only. the direction of the valves has to be towards the heart. so 1 is heart. the only option for 2 is brain
Q40 every recessive phenotype is always shown by homozygous recessive. if it was homozygous dominant, or heterozygous, the dominant feature would have been present. but since the question says, some of the offspring chracteristic, the genotype has to be recessive

 

[EpicLol]

svenas
i'm fine. wbu?
i'll try
thanks
Q9 i don't understand it either. i expected the answer to be B
Q14 the blood vessel has to be a vein. which means it takes blood to the heart. so 1 has to be heart, and 2 has to be brain
Q21 the fat acts as a good insulator. i'm sure you must have thought A was the answer. the reason it's not the answer is because sweat glands are not secreted. it's sweat that's secreted
Q26 bacteria is the main ingredient in both cheese and yoghurt. the other two processes are also important in the production of cheese and yoghurt.
Q31 AIDS is caused by a virus, and malaria is caused by a protoctist called plasmodium. malaria is transferred or is spread by an insect, the mosquito
Q32 the size of the holes in a fishing net has nothing to do with the reproduction of fish!
Q33 if plants are to be produced asexually(where the new plants are genetically identical to the parent plants), plants are cut with part of the stem
Q40 if any phenotype shows the recessive characteristic, it has to be homozygous recessive. if it was heterozygous, it would show the dominant feature, not the recessive.

I hope I've helped you!
All the Best!

wow u are good at bio

 

[IGCSE O/L student]

wow u are good at bio

thanks!

 

[Albert Einstein]

for A-level can i get it.....compressed it if u can

 

[Whateves]

How the hell did you get the question paper?

 

[svenas]

C6H9OH + 8O2 ----> 6CO2 + 5H2O
C-6 C-6
H-10 H-10
O-16+1=17 O-12+5=17

hiiiiii.
BEST OF LUCK TOMORROW!!!!!!!!!!!

 

[IGCSE O/L student]

hiiiiii.
BEST OF LUCK TOMORROW!!!!!!!!!!!

heyyyooooo!!!
thanks, bro. and same to you too!
hope i've helped to clear all your doubts!

 

[raysonzaffar]

When i came out giving the paper ......lyk a boss.......now after i hav seen this thread ........ i look like a miserable ass wandering all around asking ppl to prove these answers wrong..... alas i am screwed... well i tried ma bst.......screw the world

 

[IGCSE O/L student]

When i came out giving the paper ......lyk a boss.......now after i hav seen this thread ........ i look like a miserable ass wandering all around asking ppl to prove these answers wrong..... alas i am screwed... well i tried ma bst.......screw the world

hahahhaahhah... don't worry! insha allah, your results will be good!

 

[RSDEV]

thats what i wrote tooo....

 

[Omar Hosny]

oh sry lol
View attachment 11832

my baaad, I put the LDR at A variable resistor at B

 

[Omar Hosny]

Hi, in the energy transfer question why did u multiply by 1 second and not 120s (lightning question)

you are right it will 45 million or something !

 

[EpicLol]

you are right it will 45 million or something !

yay 450000

 

[Mymuharraq]

I have lost a minimum of 13 on this paper or maximum of 17.....so if we say I lost 15 marks, would I still get an A*??
On paper 1 I got 35/40

YOU HAVE PAPER 1 .. CAN YOU POST IT .. PLEASEEEEE

 

[Mymuharraq]

?? Im confused....Yeah I failed on the exam....I lost like 17-18 marks out of 80 D: do u think I will still manage to get an A*??

AFCOURSEE ABOVE 50 THERE IS A CHANCE OF A* , U ARE STILL IN 60s .. { insha-allah}

 

[Mymuharraq]

Thanku EpicLol what are the chances ov me getting an A* if i loose around 20 marks????

100% {{{ insha-allah}