Biology; Chemistry; Physics: Post your doubts here!

[syed1995]

beta its Newtons..ab jao apna dimagh larhate raho!!
mujhe koi najoomi ya koi baba samajh rakha hai???

Abay newton ko ab tu chorr day .. PHYSICS IS OVER :\ mera dimagh dobara kharab tu na karo pleash PP

 

[Spidey21]

Which Gases are soluble in water and which are insoluble in water?? List Main.
Which Gases are neutral?
Which Gases are acidic? (Not Oxides, gases in general .. like O2 H2 etc..)

What are the test for reducing agent and oxidising agent and their colour changes ...

oxidising agents
K2Cr2O7 (orange to green)
KMnO4 ( purple to colourless)
Reductants
KI (colourless to brown/Orange)

 

[MustafaMotani]

volume ? they have already given...

man I m sleepy but I m sure my ans is 0.45dm3

 

[Spidey21]

Which Gases are soluble in water and which are insoluble in water?? List Main.
Which Gases are neutral?
Which Gases are acidic? (Not Oxides, gases in general .. like O2 H2 etc..)

What are the test for reducing agent and oxidising agent and their colour changes ...

acidic gasses all that contain non metals
like CO, CO2 etc!!

 

[MustafaMotani]

oxidising agents
K2Cr2O7 (orange to green)
KMnO4 ( purple to colourless)
Reductants
KI (colourless to brown/Orange)

SO2 NO2 CO2 are acidic

 

[MustafaMotani]

acidic gasses all that contain non metals
like CO, CO2 etc!!

CO is not acidic I can bet my life on it

 

[MustafaMotani]

Which Gases are soluble in water and which are insoluble in water?? List Main.
Which Gases are neutral?
Which Gases are acidic? (Not Oxides, gases in general .. like O2 H2 etc..)

What are the test for reducing agent and oxidising agent and their colour changes ...

CO is not acidic

 

[Spidey21]

CO is not acidic I can bet my life on it

http://wiki.answers.com/Q/Is_carbon_monoxide_a_acid_or_alkaline_solution

Life please!!

 

[MustafaMotani]

am departing may all of us get A* (aameen)
FareWell Fellas... Do pray for me ..

 

[paradoX error]

CO is not acidic I can bet my life on it

it is very slightly acidic
Now u go hang urself

 

[MustafaMotani]

http://wiki.answers.com/Q/Is_carbon_monoxide_a_acid_or_alkaline_solution

Life please!!

wrong answer my book clearly stats that its neutral ..
these ans are not reliable

 

[MustafaMotani]

it is very slightly acidic
Now u go hang urself

PonX

 

[Spidey21]

wrong answer my book clearly stats that its neutral ..
these ans are not reliable

ill ask my teacher!!

 

[syed1995]

Answer with True false in these statements .. khud ki banayi hui hain in case a statement you think is false .. write the correct statement for it

1. Reactivity decreases in the first group downwards ..
2. Reactivity increases upwards in non-metals...
3. Melting and boiling point decreases downwards in Metals.
4. Elements are arranged according to their proton number.
5. Most elements have more neutrons than protons.
6. In a lattice electrostatic forces are the reason why it is so strong.
7. Covalent Compounds are easier to break than Ionic Compounds.
8. All Elements in Group VII and VIII are Diatomic.
9. Group 0 Elements are unreactive
10. Ethanol is a volatile liquid
11. Organic Compounds are insoluble in water.
12. Oil and Ethanol will mix with each other.
13. Diatomic Molecules all form Covalent bonds.
14. Same mass of allotropes of carbon will produce same mass of CO2.
15. We will all get A*s.

 

[MustafaMotani]

ill ask my teacher!!

Yeah sure

 

[Spidey21]

it is very slightly acidic
Now u go hang urself

nah ..i own him now??
you want him ?
i am selling him for like 32 rupees per kg!!
lmao!!

 

[paradoX error]

wrong answer my book clearly stats that its neutral ..
these ans are not reliable

See it in A levels book by brian ratcliff

 

[ashiqbal]

acidic gasses all that contain non metals
like CO, CO2 etc!!

CO is not acidic! it does not even dissolve in water so it is neutral!
soluble are NH3, HCl, H2
insoluble are CO, N2
O2 and CO2 are partially soluble

Which Gases are soluble in water and which are insoluble in water?? List Main.
Which Gases are neutral?
Which Gases are acidic? (Not Oxides, gases in general .. like O2 H2 etc..)

What are the test for reducing agent and oxidising agent and their colour changes ...

dunno if there are any alkaline gases except NH3!, metal oxides dont usually evaporate. NH3 is the only alkaline gas
CO2, SO2, NO, NO2 are all acidic
CO is Neutral
SO2 and Ethanol are also reducing agents(they turn potassium dichromate from orange to green)

 

[Spidey21]

Answer with True false in these statements .. khud ki banayi hui hain in case a statement you think is false .. write the correct statement for it

1. Reactivity decreases in the first group downwards .. T
2. Reactivity increases upwards in non-metals... T
3. Melting and boiling point decreases downwards in Metals. F
4. Elements are arranged according to their proton number.T
5. Most elements have more neutrons than protons.F
6. In a lattice electrostatic forces are the reason why it is so strong. T
7. Covalent Compounds are easier to break than Ionic Compounds. T
8. All Elements in Group VII and VIII are Diatomic. F
9. Group 0 Elements are unreactive T
10. Ethanol is a volatile liquid T
11. Organic Compounds are insoluble in water. T
12. Oil and Ethanol will mix with each other. F
13. Diatomic Molecules all form Covalent bonds. T
14. Same mass of allotropes of carbon will produce same mass of CO2. F
15. We will all get A*s.

TTTTTTT

 

[paradoX error]

nah ..i own him now??
you want him ?
i am selling him for like 32 rupees per kg!!
lmao!!

k special offer for urs 1 extra per Kg