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Catalogs Discussion Forums -> Organic Chemistry -> C2 molecule -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
how many sigma bond are there in C2 molecule
Catalogs Discussion Forums -> Differential Calculus -> maxima and minima -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Let us consider a function y=f{x} an open interval (a,b).For finding maxima or minima we find critical points where either

or the function is not continous.Suppose we find 4 critical points i.e. x1 ,x2   ,a and b.

These critical point includes the end points.Now if we get local maxima from x1 and a & local minima from x2 and b.

Now absolute maxima and minima only exits if we get the ponts from x1 or x2 .

No absolute maxima and minimaexists if point is from open interval i.e. a or b.

Catalogs Discussion Forums -> Integral Calculus -> Integration Challenge-5!! -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

     

Now putting:-

solving we ge:-

now

is answer

Catalogs Discussion Forums -> Mechanics -> Simple Harmonic Motion -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

In SHM omega represents the angular frequency or angular speed. It is the magnitude of angular velocity actualy.

Catalogs Discussion Forums -> Algebra -> try this modified ques.. from@nishant..amazing sum try it guys....mindboogling........ -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

I  think the question is not correct.It shouid be a20 instead of a19 in the question.

let the first term be a and the common difference be d then from the given information -

a+(a+4d)+(a+9d)+(a+14d)+(a+19d)+(a+23d)=225

6a+69d=225

2a+23d=75

 

Now solving the problem-

a1 +a2 +a3 +-------+a24 =24a+276d=12(2a+23d)=12*75=900

 

 

Catalogs Discussion Forums -> Magnetism -> About inertial and gravitational mass -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

as we know mass is costant.then why scientists searching for evidences to prove that inertial and gravitational masses are equivalent or same?

Catalogs Discussion Forums -> Electricity -> What is the difference between thin and thick shells in electrostatics? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Shell refers to a hollow sphere.A thin shell is one whose thickness is such that it can be neglected for calculations and inner and outer radius are taken to be same but in case of thick shells the thickness can't be neglected and calculation is done while including the inner and outer radius.

Catalogs Discussion Forums -> Inorganic Chemistry -> hydrogen bonds -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

no of hydrogen bonds is 4

Catalogs Discussion Forums -> Inorganic Chemistry -> Transition elements -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
Fe3+ is more stable in comparison with fe2+ but the standard electrode potential for fe3+/fe2+ is positive. Why?
Catalogs Discussion Forums -> Algebra -> limits and derivative -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

limx->0  ( tan2x+sin2x)/x3

limx->0  [(2tanx/1-tan2 x)+(2tanx/1+tan2 x)]/x3

limx->0 (2tanx.2tan2 x)/1-tan4 x . x3

now using limx->0 tanx/x=1

answer is 4.

Catalogs Discussion Forums -> Organic Chemistry -> how to convert butane to butyne -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

when we brominate butane using ccl4 as a solvent we get di bromo butane. now in order to get alkyne from alkyldihalide we make this to react with KOH alchohlic.  here beta elimination reaction takes place giving you the desired product?

Catalogs Discussion Forums -> Inorganic Chemistry -> reaction of halogens and alkali metals -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

for alkali metals reactivity is based on the ease with which they lose electrons hence Cs bieng most electropositive loses electrons readily hence reactivity increases as we go down the group whereas in case of halogens reactivity is based on their affinity to electrons hence flourine being most electronegative has highest reactivityin the group hence reactivity decreases as we down the group in halogens

Catalogs Discussion Forums -> Inorganic Chemistry -> what is dsp2 hybridization? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

dsp2 hybradization is an inner orbital hybradization in which (n-1)d orbital is used  instead of nd orbital.The geometry in this case is square planar geometery . It is analogous to sp3 hybradization.For example in the complex compound Ni(CO)  Hybradization of Ni is dsp2   .

Catalogs Discussion Forums -> Inorganic Chemistry -> what is dsp2 hybridization? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

dsp2 hybradization is an inner orbital hybradization in which (n-1)d orbital is used  instead of nd orbital.The geometry in this case is square planar geometery . It is analogous to sp3 hybradization.For example in the complex compound Ni(CO)  Hybradization of Ni is dsp2   .

Catalogs Discussion Forums -> Integral Calculus -> Integration Challenge-2!! -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

the answer to this  is (tan- sinx / x)+c

Catalogs Discussion Forums -> Physical Chemistry -> Atom -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
atom means 'undivisable'. we know atom is divisable so why the name has not been changed.
Catalogs Discussion Forums -> Physical Chemistry -> atom and molecules -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

atom is the smallest fundamental unit of a matter consisting of subatomic particles

 
 
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