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two isotope of sodium na^23 and na^24 if in the nature,na^23 is 80% then wh

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An iodized salt contains 0.5% of NaI. A person consumes 3gm of salt everyda

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Two positive ions each carrying q charge are separated bt a distance d If

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If a regular hexagon have side 10 cm and 5 micro coulomb charge on it verte

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using definite integration find the area of the triangle whose vertices are

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Any point on the a axis is the form of

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a converging meniscus of glass having radius of curvature 4 cm and 8 cm is

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$\Delta XYZ$ is a right angled triangle , right angled at Y as shown in figure . What is the value of the difference of $\sin 60^{\circ}$ and $\cos 30^{\circ}$ if the ratio of the sides are $1: \sqrt 3:2$

asked May 8, 2019 by meena.clay6

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A spherical metal ball whose radius is $21\; cm$ is melted to make smaller balls each of radii $0.7\; cm$. How many balls can be made from the bigger ball ?

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Find the equation of the straight line passing throught the pionts (-1,2) a

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If A and B are square matrices of same order and A is symmetric, then show

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If A is a square matrix of order 3 with mod A = 4.then write the value of M

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Phenol is less acidic then (1) ethanol (2) o-nitrophenol (3)o-methylphen

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Ozone layer of upper atmosphere is being destroyed by

asked May 8, 2019 by dibakarkumar04

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Ozone layer of upper atmosphere is being destroyed by

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an iron nail is dipped in aq solution of copper sulphate in water.This solu

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The radius of the first bohr orbit of the h atom is π. Then the radius of

asked May 7, 2019 by archanadas967

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How will you convert ethanoic acid into acetylene

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find shortest distance of between line x-3/1 = y-5/2 = z-7/1 ; x+1/7 = y+1

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show that the equation of the sphere passing through the points (3,0,2,(-1,

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Find the molecular formula for a crystal in which P occupies the corner and

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if y=f(x^2+2) and f'(3)=5, then dy/dx at x=

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Electronic configuration of Mn+2

asked May 7, 2019 by athar.shah579

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what are the schottky defect and frenkel defect?

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A biased coin so that a head is thrice as likely to occur as a tail.If the

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A particle moves in a circle such that it's speed varies with time as v=2t

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