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If the shortest wavelength in Lyman series of hydrogen atom is A, then the longest wavelength in Paschen series of $He_{+}$ is :

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For the non – stoichiometre reaction $2A+B→C+D$ , the following kinetic data were obtained in three separate experiments, all at 298 K The rate law for the formation of C is:

The statement $(p↔q)$ is

The locus of the foot of perpendicular drawn from the centre of the ellipse $x_{2}+3y_{2}=6$on any tangent to it is

Given $E_{cr_{3+}/Cr}=−0.74V,E_{MnO_{4}/Mn_{2+}}=1.51cm$ $E_{Cr_{2}O_{7}/Cr_{3+}}=1.33V,E_{Cl/Cl_{−}}=1.36V$ Based on the data given above, strongest oxidising agent will be:

Two short bar magnets of length 1 cm each have magnetic moments $1.20Am_{2}and1.00Am_{2}$ respectively. They are placed on a horizontal table parallel to each other with their N poles pointing towards the South. They have a common magnetic equator and are separated by a distance of 20.0 cm. The value of the resultant horizontal magnetic induction at the mid - point O of the line joining their centres is close to (Horizontal component of earths magnetic induction is $3.6×10_{−5}Wb/m_{2})$

The sum of first 9 terms of the series $11_{3} +1+31_{3}+2_{3} +1+2+31_{3}+2_{3}+3_{3} +.....$is

An organic compound A upon reacting with NH3 gives B. On heating B gives C. C in presence of KOH reacts with $Br_{2}to giveCH_{3}CH_{2}NH_{2}.$ A is

If z is a complex number such that $∣z∣≥2$, then the minimum value of $∣∣ z+21 ∣∣ $