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Sorry I meant why isn't it B ?Assalam-o-alaikum wr wb..
it IS A
For June 11 Variant 1 It has the question of pollen grain ? when they asked path of pollen tube .
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Sorry I meant why isn't it B ?Assalam-o-alaikum wr wb..
it IS A
Chemistry Questions :
november 05 # 39 I do know that because there is no double bond so it is an alkane which will not decolourise the bromine , but if you count the number of carbon atoms and hydrogen atoms it will give you C6H12 Which is matching the General formula alkene CnH2n . So it could be B . ??!
A metal doesn't react with any acid...so in the first test tube there is no reaction...Chemistry Questions :
June 06 # 19 three of them will produce Cu ions . I do understand that for Cu + H2so4 ->CuSo4(copper Cu2+ ion present ) + H2 . and for CuCo3+H2so4-> CuSo4 (Cu2+ ions present ) +H20 + c02 .What about Cu(OH)2 + H2so4???Why there is no copper ions .
I think the answer is wrong in the mark scheme...it should be 2Chemistry Questions :
November 06 # 5 did not get it .
Barium nitrate is alkaline...when you add dilute HCl in it...it becomes acidic...i.e the pH decreases!Chemistry Questions :
November 08# 20 why does the ph fall because BaNo3 + HCL-> Bacl + Hno3 ( Which one is acidic to decrease the pH 'from the products' ??!!!)
i guess they wanted the shortest reasonable one so it cant be C since it's coming from the outside so it will be DSorry I meant why isn't it B ?
For June 11 Variant 1 It has the question of pollen grain ? when they asked path of pollen tube .
How , like Why C even it is outside . I believe it could be D because it is coming from tip . Were it was picked from the pea plant . I dunno maybe .i guess they wanted the shortest reasonable one so it cant be C since it's coming from the outside so it will be D
What made the Barium Nitrate acidic ? I believe because it formed hno3 ?Assalam-o-alaikum wr wb...
the answer IS B...bcoz alkanes CAN burn....!
A metal doesn't react with any acid...so in the first test tube there is no reaction...
in the second test tube...a reaction will take place so tehre will be copper ions in it..same will happen in test tube 3! and therefore the answer is C.
I think the answer is wrong in the mark scheme...it should be 2
cuz there are 2 chlorine (17) one noble gas (Argon) and 2 Metals (Potassium)
i don't think that noble gas is a nonmetal
correct me if i am wrong...
Barium nitrate is alkaline...when you add dilute HCl in it...it becomes acidic...i.e the pH decreases!
and no precipitate forms! (bcoz barium chloride is aqueous)
aoa wr wb...i guess they wanted the shortest reasonable one so it cant be C since it's coming from the outside so it will be D
Hydrochloric acid made it acidic...What made the Barium Nitrate acidic ? I believe because it formed hno3 ?
plus...HNO3 is acidic! (Nitric acid)What made the Barium Nitrate acidic ? I believe because it formed hno3 ?
i thought the same thing for rhere 2is 2 chlorines only so the answer should be 2 .Assalam-o-alaikum wr wb...
the answer IS B...bcoz alkanes CAN burn....!
A metal doesn't react with any acid...so in the first test tube there is no reaction...
in the second test tube...a reaction will take place so tehre will be copper ions in it..same will happen in test tube 3! and therefore the answer is C.
I think the answer is wrong in the mark scheme...it should be 2
cuz there are 2 chlorine (17) one noble gas (Argon) and 2 Metals (Potassium)
i don't think that noble gas is a nonmetal
correct me if i am wrong...
Barium nitrate is alkaline...when you add dilute HCl in it...it becomes acidic...i.e the pH decreases!
and no precipitate forms! (bcoz barium chloride is aqueous)
I don' think so ... since stigma is also located between the sepals and between anthers .aoa wr wb...
it's bcoz pollen grains lands on top of the pod..not from sepals or in between!
Alkenes can burn also .i thought the same thing for rhere 2is 2 chlorines only so the answer should be 2 .
Well i think u mixed up..the ms answer is right becoz it counted the two 17s(isotopes) plus 18(argon) so it becomes 3 ..U must have counted 17 only once becoz the 2 are isotopes
argon is a noble gas...do you count it as a non metal??? (that's my question )Well i think u mixed up..the ms answer is right becoz it counted the two 17s(isotopes) plus 18(argon) so it becomes 3 ..U must have counted 17 only once becoz the 2 are isotopes
Ya definitely..anything which is a non metal eg:noble gas,halogens etc..is considered as a non metallic element And sorry i didnt read your question wellargon is a noble gas...do you count it as a non metal??? (that's my question )
Jazakallah Khair anyway
nah LOL...it's okieYa definitely..anything which is a non metal eg:noble gas,halogens etc..is considered as a non metallic element And sorry i didnt read your question well
May the same go to you thx alotnah LOL...it's okie
and well...jazakallah Khair
May Allah give you success in this world as well as the hereafter...and may He make the papers easy for you...Aameen
Ya its definitely A not C..As for tips..study the syllabus and then solve as many pastpapers as u can specially the old ones..thats the greatest tip i can give uWarning:
in need of assistance again... XC
MJ 2006 QUESTION 4 ISNT IT A NOT C????!!!!!
ALSO CAN ANYONE GIVE ME SOME TIPS ON CHEM PAPER1 ?
I WOULD REALLY APPRECIATE THAT :')
Warning:
in need of assistance again... XC
MJ 2006 QUESTION 4 ISNT IT A NOT C????!!!!!
ALSO CAN ANYONE GIVE ME SOME TIPS ON CHEM PAPER1 ?
I WOULD REALLY APPRECIATE THAT :')
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