Biology; Chemistry; Physics: Post your doubts here!

[peacce]

37- Cross I^0 1^a and I^a I^b, you'll get the answer. D
38- Albinism is recessive means, it only occurs when genotype is rr or there are two recessive alleles.
Mother and father are normal so possibilities are that they might be AA and AA both, AA or Aa and Aa and Aa. When AA and AA is crossed, all resulting genotypes are dominant therefore no albinism, even when AA and Aa is crossed again no albinims, but when Aa and Aa is crossed, the reslutng genotypes are AA, Aa, Aa, aa so albinims ocurs. Hence both parents are heterozygous dominant. So A.
39- Not during the product of egg cell, mutation at the time of fusion causes Down syndrome therefore all A, B and D are wrong. No more than one sperm fuses, only an extra chromosome so C.
40- C. Hh and hh are crossed, genotype resulting is Hh, Hh, hh, hh.

funky brat 39 A q likha hai ms mein :O mene b C guess kia tha par its A :O

 

[peacce]

And there's no such thing as genius, I'm sure you're on too. It's all about discovering yourself and some people are good with one thing while worst at the other. So never think that you're inferior than anyone.

 

[funky brat]

funky brat 39 A q likha hai ms mein :O mene b C guess kia tha par its A :O

Lol acha ruko.

 

[***amd***]

funky brat 39 A q likha hai ms mein :O mene b C guess kia tha par its A :O

coz its all about chromosomal mutation (or perhaps gene mutation .-. but yes, its just mutation)

 

[funky brat]

funky brat 39 A q likha hai ms mein :O mene b C guess kia tha par its A :O

Sperm main koi mutation nahi ati. They might be refering to zygote as egg cell so A.

 

[peacce]

coz its all about chromosomal mutation (or perhaps gene mutation .-. but yes, its just mutation)

but it shouldnt b A man

 

[peacce]

Sperm main koi mutation nahi ati. They might be refering to zygote as egg cell so A.

OoOO

 

[***amd***]

OoOO

but it shouldnt b A man

0.0 wait, post the Q u r talking about. perhaps we got u wrong.

 

[peacce]

0.0 wait, post the Q u r talking about. perhaps we got u wrong.

Thanks i got it but

 

[funky brat]

http://papers.xtremepapers.com/CIE/...l O Level/Chemistry (5070)/5070_s12_qp_12.pdf
question 14, if A is the answer D also happens so why not D?
question 8, pehli bar suna hai, solid electrolyte se bhi bulb glow karta hai. -.- Book main clearly likha hai nahi. :/

 

[funky brat]

IT WAS;
Q- Where could I find good sources (notes) for electronics (introductory electronics, electronic systems) that relate to our syllabus?
And if someone can, what are; 1- REED RELAYS, 2- BISTABLE CIRCUITs, 3- ASTABLE CIRCUITs?

Reed relay is all I know.

 

[funky brat]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s12_qp_12.pdf
question 14, if A is the answer D also happens so why not D?
question 8, pehli bar suna hai, solid electrolyte se bhi bulb glow karta hai. -.- Book main clearly likha hai nahi. :/

Chemistry masters and everyone else, please?

 

[peacce]

Y is it "C"?

 

[peacce]

Chemistry masters and everyone else, please?

q8 mei least bright pocha hai tab hi solid hoga :O

 

[***amd***]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s12_qp_12.pdf
question 14, if A is the answer D also happens so why not D?
question 8, pehli bar suna hai, solid electrolyte se bhi bulb glow karta hai. -.- Book main clearly likha hai nahi. :/

Q14, rhtey ask which change ALWAYS takes place. color of solution doesnt necessarily fades always, like in purification of copper, color doesnt change, because the ions which are discharged on cathode, their deficiency is fulfilled by the ion being released in solution at anode.
Q8, hmmm... i dunno

 

[funky brat]

Y is it "C"?

Conditions essential for photo= CO2+ Chlorophyll.
P = no chloro., no CO2, so 2 conditions.
Q= No chloro. So one only
R= all present
S= No CO2, so one only.
So C.

 

[funky brat]

q8 mei least bright pocha hai tab hi solid hoga :O

Solid does not even condut, written clearly in book. How can the bulb even light? :/

 

[***amd***]

Y is it "C"?

simple, P lacks CO2 and chlorophyll [lacks 2]
Q lackes only chlorophyll [lacks 1]
R lacks nothing [lacks 0]
S lacks only CO2 [lacks 1]
so answer is Q and S

 

[funky brat]

simple, P lacks CO2 and chlorophyll [lacks 2]
Q lackes only chlorophyll [lacks 1]
R lacks nothing [lacks 0]
S lacks only CO2 [lacks 1]
so answer is Q and S

Nahi ap ney ziada acha likha hai.

 

[Awesome12]

Chemistry masters and everyone else, please?

Since amd has answered question 14, i will answer question 8
Who said electricity can be conducted in ionic compounds in the solid state. CIE at least in every paper asks this question;
Why is electricity conducted in aqueous NaCl and not in solid NaCl
The ans is liquid mercury
and it also says
LEAST BRIGHT