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Biology; Chemistry; Physics: Post your doubts here!
can anyone tell why chemistry s_05_qp4 Q3 (c)(i) is chlorine and why is it not oxygen?- ashiqbal
- Post #2,166
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
why cant it be oxidising agent?- ashiqbal
- Post #2,165
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
if you have read marking scheme, it is repeated various times that(allow adding charcoal to remove indicator!- ashiqbal
- Post #2,128
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
Energy Released in bond Making is greater than the energy Absorbed in bond Breaking!- ashiqbal
- Post #2,106
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
u can write that aadd charcoal to remove indicator, instead of repeating the experiment!- ashiqbal
- Post #2,105
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
its correct- ashiqbal
- Post #2,089
- Forum: O-Levels / GCSEs / IGCSE
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Maths, Addmaths and Statistics: Post your doubts here!
K!- ashiqbal
- Post #1,343
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
actually many rays are produced from point M in all directions. we just have to show two rays that are different in angles so that we can show the extreme points when the rays reach our eyes, they are converged back at one point om our retina!- ashiqbal
- Post #2,063
- Forum: O-Levels / GCSEs / IGCSE
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Maths, Addmaths and Statistics: Post your doubts here!
we would apply the rule of congruency here (AAS) Angle MQB = Angle NPA Angle QMB = Angle PNA AP = QB therefore QMB is congruent to PNA- ashiqbal
- Post #1,340
- Forum: O-Levels / GCSEs / IGCSE
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Maths, Addmaths and Statistics: Post your doubts here!
AP=QB PN=QM therefore AN=BM=BM=6 cm- ashiqbal
- Post #1,338
- Forum: O-Levels / GCSEs / IGCSE
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Maths, Addmaths and Statistics: Post your doubts here!
20x+50 =12x+60 t=x+5- ashiqbal
- Post #1,337
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
two rays, starting from M, diverging a little, striking the mirror, then reflected till P. the two rays start from same point, M , but end at two different points at P. then continue the two rays from P back INTO the mirror until they both meet- ashiqbal
- Post #2,050
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
Chlorine bleaches moist litmus paper.... but dont know about universal indicatior!- ashiqbal
- Post #2,049
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
nopes :p!- ashiqbal
- Post #2,048
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
when it is boiled in tube of ethanol in a water bath! :p LOL Bio students!- ashiqbal
- Post #2,034
- Forum: O-Levels / GCSEs / IGCSE
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Maths, Addmaths and Statistics: Post your doubts here!
u know the rule that "any angle subtending the diameter from a point on the circumference is 90 degrees", right? so reverse the rule so that it will become "any arc being subtended by a point on the circumference with an angle of 90 degrees is the diameter". I think i got this correct.- ashiqbal
- Post #1,325
- Forum: O-Levels / GCSEs / IGCSE
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Maths, Addmaths and Statistics: Post your doubts here!
450/2- ashiqbal
- Post #1,322
- Forum: O-Levels / GCSEs / IGCSE
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Biology; Chemistry; Physics: Post your doubts here!
12 is not soluble, all others are correct- ashiqbal
- Post #2,028
- Forum: O-Levels / GCSEs / IGCSE
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Maths, Addmaths and Statistics: Post your doubts here!
450:550 9:11- ashiqbal
- Post #1,318
- Forum: O-Levels / GCSEs / IGCSE