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why we can't store CuSo4 in zinc? becoz cu oxidizes zn ...

A uniform rod is placed on 2 spinning wheels .The axes of wheel are separated by 2l . The coeff of friction b/w rod and wheel is μ.Find peiod of small oscillations of rod. *Image* ...

f(m,n) = 3m + n + (m+n)2 Find Σn=0 to ∞(Σm=0 to ∞ 2-f(m,n)) ...

what is EMF? HOW IT LINKS WITH CELL POTENIAL AND ELECTRODE POTENTIAL? WE USE NERNEST EQUATION TO FIND WHAT ...

A straight glass tube has sealed lower end and upper end open to atmosphere.The lower half is filled with n moles of diatomic gas .The length of the tube is 1.52 m How much heat should be provided to the gas such that all the ...

A user for a secure internet service has a 20 digit key phrase. The key phrase is known by the user only and each digit in the key phrase has a value 0-9. When the user attempts to log onto the secure service he/she is asked ...

RCOR ON REACTION WITH PCL5 GIVES?????????? ...

out of c6h5br n c(me)3br compare rate of sn2 ...

what is the effect of alkoxy group on acidic strength and why ...

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what is the probability of getting two consecutive heads in five tosses of an unbiased coin ...

why ethanol gives iodoform test? explain ...

i am getting a rong ans for the question pls reply *Image* wont the markownikoff's rule works here ...

*Image* in the figure shown , the minimum value of 'a' such that cylinder starts rising up the inclined plane : (a) g tanθ (b) g cosθ (c) g sinθ (d) g cotθ ...

*Image* are they enantiomers or same molecule ...

addition of D20 TO 2 methyl 2 butene (in presence of D+) gave alcohol (CH3)2-C(OD)CHDCH3 . when reaction was analyzed it was found it contains almost no deuterium what does this tell about the reaction mechanism ? please guid ...

A massless conical flask filled with liquid is kept on a table in vacuum. Force exerted by liquid on base of flask = W1 Force exerted by flask on table = W2 then (A)W1=W2 (B)W1>W2 (C)W2>W1 ...

plz explain the concept of capillary rise ...

Q.1 *Image* answer given is (c) but i got (d) [2][7] ...

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we have done a good amount of serious mathematics. just have a glimpse of mathematics humour ...

Planet X is a ball with center O. Three spaceships A, B and C land at random on its surface, their positions being independent and each uniformly distributed on the surface. Spaceships A and B can communicate directly by radi ...

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another brilliant one { only for those who now come to 12th class} {who are writing jee 2009, better leave this. u can sit on this after april 12. dont waste your time now.} Find all surjectyive functions f:N→N such that fo ...

a piece of wax weighs 18.03 gm in air A piece of metal is found to weigh 17.03 gm in water It is tied to the wax and both together weigh 15.23 gm in water Then the specific gravity of wax is My problem is that if the metal's ...

targetiitians pls post abt phaltoo tricks and how to use it in xams Mathie reply is strictly needed ...

The value of a2+b2+c2 where c=ab and a and b are consecutive integers is always c+1 (TRY IT OUT). This will be useful in vectors and 3-D to calculate the denominator in formula to find angle and to find easily unit vectors. P ...

A bag contains a coin of value M and a number of other coins whose aggregate value is m. A person draws one at a time till he draws the coin M. Find the value of his expectation. i like this problem , because its got a one li ...

There are 10 applicants for a job, labeled 1, 2, ... , 10. Their suitability for the job is ranked in this order (so 1 is more suitable than 2, who is more suitable than 3 and so on). But an applicant's ability is only measur ...

A bag contains 8 red and 5 white balls.Three balls are drawn at random.Find the Probability that All the three balls are white in solving this question i have a doubt can we take 5 white balls as identical or not.can u explai ...