Test Series - 2nd Phase Test

62

Lokesh Verma ·2008-12-16 23:35:07

well sky.. that is an interesting problem

It will be like go front come back.. then go front..

it is like upto 10 he will go like this

6-4+6-4+6-4+6-4+6-4

now he will move +6 to move to 16 meters.!

I hope this is now obvious?

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1

voldy ·2008-12-16 23:45:42

check post made abt Q.49

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dimensions (dimentime) ·2008-12-16 23:45:00

see,real gas obeys equation at low pressure & high temperature, ie over a SPECIFIC RANGE ONLY....................

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1357

Manish Shankar ·2008-12-16 23:42:48

Its given there isotopes have non-integral masses which is not true

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62

Lokesh Verma ·2008-12-16 23:42:00

vishal

2 wrongs dont make it a right... please see what u are doing in both the cases. If u are not convinced.. pls read it yet agian..

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skygirl ·2008-12-16 23:41:02

yes they may have...wats wrong there ?

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1357

Manish Shankar ·2008-12-16 23:40:02

In 65 The isotopes have integral atomic mass

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1

greatvishal swami ·2008-12-16 23:38:17

q 55
i have asssumed ma ans correct ie
%N2O4=25%

and then proved myself correct by finding net mass of N2O4 & NO2 in mix & added them to get 57.5 ie 2wice the given vapour density

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1

voldy ·2008-12-16 23:38:10

arey baba , check peter atkins. no ? mein page nos bhi diya hoon .If I'm wrong in understanidgn then just explain in the fourm.

thanks.

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1

graviton ·2008-12-16 23:37:40

to theek hai hum real gas ki hi baat kar rahe hai

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62

Lokesh Verma ·2008-12-16 23:36:25

Arrey yaar.. the quesiton is NOT about IDEAL GAS

IT IS ABOUT REAL GAS!! READ FIRST!

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1

voldy ·2008-12-16 23:35:16

one mo dude. Q.49 the thing i've got is the tension in the string with the pulleys. so the tension in the one attahced to the balance has twice the tension ,thus it should tilt ot right no?

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1357

Manish Shankar ·2008-12-16 23:48:15

But Where comes the question of IDEAL GAS

Nothing is mentioned in the question regarding IDEAL GAS

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1

graviton ·2008-12-16 23:33:54

no it is not applicable over wide range. it obeys near boyles temperature so over a specific range must be the ans

i agree with srinath & dimensions

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voldy ·2008-12-16 23:32:38

no way The ideal gas eqn is appplicable ear to boyle temp . for a considerable amt of pressure , but not any temp . no?

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1

skygirl ·2008-12-16 23:32:28

wat is wrong in statement 2 of q.no.65 ?

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1357

Manish Shankar ·2008-12-16 23:31:25

@ Vishal.......so what is 23/57.5?????

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1

skygirl ·2008-12-16 23:30:31

plz explain 45..
how is it 56 secs.. plz explain..

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62

Lokesh Verma ·2008-12-16 23:30:18

i dont knwo what u are trying to say vishal... sorry if i am repeating what u are saying

so its mass in mixture=.25*92==.5.M ...........1

also NO2=.75*46=.75M ..........2

% by mass = .5/(.5+.75) = .40

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1

skygirl ·2008-12-16 23:29:38

yes 72 is applicable for a wide range..

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greatvishal swami ·2008-12-16 23:28:15

q55 net mass=57.5
if N2O4=25%
so its mass in mixture=.25*92=23...........1

also NO2=.75*46=34.5..........2

1& 2 add to 57.5

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62

Lokesh Verma ·2008-12-16 23:25:29

about 72...

I think u guys are talking about Ideal gas equation being true in a small range (Low Pressure, High Temperature!) or is it something else that I am not able to understand? I dont see how it is not applicable over a large range!

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62

Lokesh Verma ·2008-12-16 23:20:48

okie will try to do that :)

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1357

Manish Shankar ·2008-12-16 23:20:29

In Q.55 what do you have to find?

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33

Abhishek Priyam ·2008-12-17 01:09:23

i forgot..

Q 8
Statement 1: Derivative of k.f(x) = k. Derivative of f(x)
Statement 2: Derivative of f(x).g(x) = f(x).g'(x)+f'(x).g(x). Derivative of a constant is zero!

I was saying about k=0 and f(x)=[x]

at integral RHS of statement 1 is not defined but LHS is defined so hows it equal..

equality means 100% identical in every aspects naa ??