Messages posted by hari

in combinational logic circuit we use logical gates and most importantly their output doesn't depend on the past inputs ... but in sequential circuits output depends on past inputs as we have flipflops as memory devices ... hope u r clear

please post complete question.. modulation index mostly depends on carrier signal voltage. becaus modulation index = Vc / Vm

each n every pic is very funny

say Hum Hain Rahi Pyar Ke phir milenge chalte chalte

propyne+H2-------->CH3-CH=CH2(in the presence of PDcatalyst)

Pd catalyst is used for selective reduction of alkyne to alkene instead of generating alkane

because the mass of the earth decreses as we move deep into the earth.

M'= [(R-h)^3 / R^3] x M

as we see as h increases R-h decreases so M' decreases

COOH-COOH+H2SO4(conc)-----> CO+CO2+HOH

i don't think Li+ + e- = Li is feasible ;cause Li+ has He configuration ;so if it accepts electron it may lose stability.

KI reduces H2SO4 into SO2

because of flourine's high electro negativity than chlorine,in difloro carbene the negative charge is stabilised so difloro carbene more stable

dI = r^2(p dV)

where dI is moment of inertia

p is density

r is radius of gyration

first we deal with LiAlH4 .

LiAlH4 usually reduces C=O,-COOR,_COOH,-CONHR,-C(triple bond)N but it has no effect on corbon corbon multiple bonds(with some exceptions)

where as NABH4 reduces aldehydess and kettones but it has no effect on epoxides,esters,lactones,corboxylic acids,nitrle and nitro group and corbon corbon multiple bonds

the reason is NaBH4 is milder reducing agent than LiAlH4

http://en.wikipedia.org/wiki/Ethers

in the above reaction we can reduce the phenol (reactant) directly by zn dust to give benzene , then what is the purpose of ethanic acid.

can u give the source

ya it works.nice idea

you can't expexct direct problems fo any book into jee.if it comes it is purely coincidence

V3+ is more stable due to the presence of filled s orbital

according to wave nature of partcles heisenberg proposed uncertainity principle.

according to him in any wave the probability of finding a particle is more in the middle part of wave .if the middle part is narrow(having less length) we can the particle easily,but to have less wave length we must have very very large momentum so we will have uncertainity in momentum.if we have optimum momentum we may be unable o loacete the partcle as the legth of the wave is more..

but we can find momentum and location of particle one after the other

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